Energy efficiency news.
Rebate updates, policy changes, and technology developments — aggregated from 50+ sources, AI-enriched, and scored for relevance.
Perimeter Compute wants to turn spare office power into edge AI data centers
A startup called Perimeter Compute is planning to install AI computer chips inside commercial office buildings, using power capacity that offices no longer need. Buildings built years ago were sized for higher energy use than they now draw, thanks to conservation efforts that cut consumption 30% to 60% over time. Perimeter, led by CEO David Hall, wants to fill that gap by putting chips in basements and mechanical rooms of large office buildings with between half a megawatt and 20 megawatts of spare power capacity, then selling that computing power to AI companies for tasks like running chatbots. This is mainly a commercial real estate and tech infrastructure story, not something that touches most houses directly. It follows similar moves by home energy companies Span and Sunrun, which have tested using spare capacity from home batteries for small-scale computing. Perimeter's approach is aimed at office landlords, not homeowners: building owners would not pay for any of the equipment, installation, or extra energy use. Perimeter covers those costs and pays landlords a share of the revenue and rent for the space. The bigger question raised is what this could mean for local power grids. Perimeter is already talking with utilities in cities like New York and Boston, since some local grids are already tightly stretched. Unlike offices, which draw power unevenly, the chips would need electricity around the clock, which could strain grids that utilities have already stretched thin across many customers. For now, no contracts are signed, and it is unclear how widely this model will spread.
PJM files backstop auction plan at FERC to meet capacity shortfall
PJM, the grid operator serving 13 mid-Atlantic and Midwest states plus Washington, D.C., is asking federal regulators to approve a special auction this fall to buy more power supply. The grid came up 6.8 gigawatts short of its target in its last capacity auction, largely because data centers are demanding much more electricity than expected. PJM says data center and other large-load demand could grow by up to 70 gigawatts by 2038. The auction would run from September 30 to October 21, with results announced by December 2, and PJM could pay up to $20 billion for new power plants to serve data centers built through 2027. If you live in a PJM state, this matters because someone has to pay for that new power supply, and it usually shows up on electric bills. PJM is proposing a much higher price cap for this auction than its last one, and the costs would be divided among PJM zones and then passed to utilities and other electricity providers within those zones. PJM says the plan only works if states take steps to shield regular customers from paying for capacity that mainly serves data centers, so how much this costs you may depend heavily on rules your state sets. Separately, PJM plans to file a related proposal that would let it cut power to large data centers that don't have their own backup power supply during grid emergencies, starting with facilities built after June 1, 2027. That's meant to protect reliability for everyone else, including homes, if the grid gets stretched thin.
AEP secures 13 GW of gas turbines as generation ‘central’ to growth plans
American Electric Power, which serves customers in states including Ohio, West Virginia, Indiana, Kentucky, Louisiana, Oklahoma, Texas and Virginia, says it has locked in enough natural gas turbines to build 13 gigawatts of new power plants by 2031, with options for another 10 gigawatts by 2035. The company's CEO says these gas plants will be central to its growth, partly to replace aging coal plants and older gas plants, and partly to meet a surge in demand from data centers and large industrial customers, whose contracted power needs have grown to 69 gigawatts across AEP's territory. For homeowners, this points to a broader trend: utilities are building more gas-fired power plants rather than relying only on wind, solar or storage, at least in the near term. AEP's plans call for 15.3 gigawatts of new gas capacity by 2035, alongside smaller additions of solar, wind and battery storage. AEP is also buying an existing coal plant and a gas plant permit in West Virginia as part of this build-out. This kind of large capital spending, part of a $78 billion five-year plan, tends to show up eventually in electric rates, since utilities recover these costs from customers over time. The company is also in talks with PJM Interconnection, the regional grid operator covering much of AEP's footprint, over how the grid is run and how new large customers like data centers get connected. AEP had considered leaving PJM earlier this year but now says talks have improved. None of this requires action from homeowners now, but it may affect future electricity costs and how new demand, like data centers, gets factored into local utility bills.
Tandem PV acquires transparent coating tech firm nexTC to advance perovskite manufacturing
A California solar company called Tandem PV has bought nexTC Corporation, an Oregon firm that makes thin, see-through coatings used in solar panel manufacturing. Tandem PV makes a newer kind of solar panel called a tandem panel, which stacks a perovskite layer (a light-absorbing crystal material) on top of a standard silicon solar cell. The idea is that combining the two materials captures more sunlight and produces more electricity than a standard silicon panel alone. The coatings nexTC develops sit between those two layers, letting sunlight through while managing the electrical current, and Tandem PV says they matter a lot for how well the panels work and how long they last. By buying nexTC and bringing its founder onto the team, Tandem PV says it can now fine-tune this part of the manufacturing process directly on its own production line, which is currently making large-format tandem panels for testing with potential customers. For homeowners, this isn't a product you can buy yet. It's a manufacturing step in the development of a next-generation solar panel technology that promises higher efficiency than today's silicon-only panels. Tandem PV has raised $100 million so far from investors including Constellation Energy and the U.S. Department of Energy, and former U.S. Energy Secretary Jennifer Granholm recently joined its board. If tandem perovskite-silicon panels eventually reach the market, they could offer more power per panel for residential solar installations, but that's still down the road.
Avantus closes $1 billion upsized corporate credit facility
Avantus, a company that builds large-scale solar and battery storage projects, has closed a $1.05 billion credit facility, more than doubling the $522 million credit line it secured in July 2024. The money will help fund the company's shift into an independent power producer and support its pipeline of projects across California and the Desert Southwest — 13 GW of solar paired with 44 GWh of battery storage. This is not a program homeowners can apply to or benefit from directly. It is financing for utility-scale projects, meaning large solar and storage installations that feed power into the grid rather than sit on individual rooftops. Still, this kind of buildout affects the broader electricity supply in the regions where Avantus operates. The company has been moving quickly on specific projects. Last month it switched on Aratina 1, a 200 MW solar facility with 500 MWh of storage in Kern County, California. It also closed more than $525 million in construction debt for a neighboring project, Aratina 2, and locked in a 20-year power purchase agreement for Rexford 2 in Tulare County, which will pair 200 MW of solar with 800 MWh of storage. Avantus says it plans to have 788 MW of projects running and another 800 MW under construction by the end of 2026, with its full pipeline eventually generating enough power for more than 10 million homes.
Dominion offshore wind project cost rises nearly $300M
Dominion Energy says its Coastal Virginia Offshore Wind project will now cost about $11.7 billion, nearly $300 million more than the company estimated in April. Dominion blames higher grid connection charges set by PJM Interconnection (the regional grid operator), tariffs the Trump administration imposed in April, and updated estimates for installing the turbines. The company also pushed back its finish date, now expecting all work done by the end of 2027 instead of early 2027 as previously planned. Dominion serves utility customers in Virginia and South Carolina, so this project affects electricity supply and pricing in that region rather than nationwide. Despite the delay and cost increase, Dominion says the project is 81% complete, with turbines already installed that can generate more than 450 megawatts of power. The company still expects the wind farm to save customers about $5 billion in fuel costs over its first decade of operation. Separately, Dominion is moving ahead with a proposed merger with NextEra Energy that would create the largest regulated utility company in the country. If it closes, Dominion says customers would get $2.25 billion in credits. The company will start seeking state and federal approval for the deal next quarter, with Virginia regulators reviewing it on an unusually fast six-month timeline. None of this changes what a homeowner needs to do right now, but it is worth watching if you get power from Dominion, since rising project costs and the pending merger could eventually show up in utility bills or rate cases.
Is the recycling symbol free speech? A judge just ruled it could be.
A federal judge has blocked a California law that would have limited which products can carry the "chasing arrows" recycling symbol. The law, SB 343, passed in 2021 and was set to take effect this fall. It said only packaging accepted by recycling programs covering at least 60 percent of Californians, and actually sorted for recycling rather than just collected and dumped, could use the symbol. U.S. District Judge William Hayes ruled the law was likely unconstitutional, saying it would probably push companies to drop the symbol entirely rather than redesign products to qualify, and suggesting a milder rule with more detailed labels would have worked better. This case does not change anything about your home directly, but it touches on a bigger fight over what recycling labels actually mean. Supporters of the law argue many plastics marked as recyclable are not widely collected or processed at all, meaning people who sort them into blue bins may just be adding contamination that slows down recycling systems and raises costs. Industry groups that sued say the law would have wrongly restricted truthful information on packaging. The ruling could also affect California's broader plan requiring companies to help fund and manage plastic packaging waste, since that law relies on the same recycling definitions now in dispute. For now, the recycling symbol's meaning stays as murky as before, so it is still worth checking your own local program's rules on what it actually accepts.
BDR Brings Profit and Growth Training Series to Texas
This is a business event for HVAC contractors, not homeowners, but it's worth knowing about since it could shape how installers pitch and finance jobs. Business Development Resources (BDR), a coaching and training company for home service contractors, is holding a two-day training near Dallas, Texas on August 18 and 19. The event covers pricing, labor efficiency, and financial decision-making on day one, and consumer financing strategies on day two. The financing session is the part most relevant to homeowners. It's meant to teach contractors how to use financing offers more effectively when selling jobs like heat pump installs, furnace replacements, or other home upgrades. If your contractor has been to a training like this, you may notice more structured financing options presented when you get a quote, especially since the trainers note that many customers' budgets are stretched right now. There's no rebate program, deadline, or dollar amount here that affects your household directly. This is simply industry training that could influence how sales conversations happen at your local HVAC company. If you're planning an upgrade and get offered financing terms, it doesn't hurt to compare them against other options, including any manufacturer or utility rebates you might qualify for separately.
40 Under 40: A Chance to Shine the Spotlight on HVAC’s Next Generation
This is a trade-industry story rather than one about home upgrades directly, but it points to something homeowners eventually feel: a shortage of HVAC technicians. Industry group ACHR News runs an annual "40 Under 40" award recognizing young HVAC professionals, and this piece is a call for nominations. It notes that a report from Bring Back the Trades projects nearly 1.4 million skilled trade jobs will go unfilled by 2030, including more than 192,000 HVAC technician positions, as older workers retire faster than new ones enter the field. There are some signs of hope for the pipeline. A June survey by SimplyWise found that people aged 18 to 29 see HVAC work as one of the more "AI-proof" careers, and nearly half said they would consider trade school over a four-year college. Big tech companies and groups like the Department of War and Mike Rowe's foundation have also started funding trades scholarships. For homeowners, none of this changes anything about your house today. But a shrinking pool of technicians has real long-term effects: it can mean longer waits for HVAC repairs, installs, or heat pump upgrades, and possibly higher labor costs, as demand for qualified workers outpaces supply. Efforts like this one are aimed at drawing more young people into the field, which over time affects how easy it is to find someone to service or upgrade your heating and cooling system.
DTE ties rate stability to data center projects as large-load pipeline remains steady
If you get power from DTE Energy in Michigan, there's a bit of news on rates. DTE has floated a plan to freeze electric rates for two years once its current rate case wraps up. But there's a catch: the freeze depends on a large Oracle data center coming online as planned by the end of 2027, plus other regulatory approvals going through. DTE says that if things go as expected, it won't file another electric rate request until at least 2028. The company had already filed for a rate hike of more than $470 million back in April. The bigger story here is that DTE is betting on data centers to help stabilize costs for regular customers. The utility has 2.4 gigawatts of signed agreements with data centers, another 2 gigawatts in advanced talks, and a pipeline that could add up to 8.4 gigawatts total. DTE argues these large industrial customers help cover fixed grid costs, which in theory eases the burden on households. None of this changes what you owe on your bill right now, but it's worth watching if you're in DTE territory. A rate freeze would mean predictable costs for a couple of years, which matters if you're weighing the payback time on things like a heat pump or other upgrades. DTE is also spending $30 billion on its electric system through 2030 and says it's working to cut outages, changes that could show up over time in service reliability, even if the timeline for any of it stretching to your neighborhood isn't spelled out yet.
Introducing Minor Renovations: Flooring
The Center for Green Schools has released a new guide called Minor Renovations: Flooring, aimed at K-12 school districts planning flooring replacements and similar smaller renovation projects. It's the first document in a new Minor Renovations Program meant to give schools a practical framework for everyday upgrades, things like classroom flooring, lighting, and building systems, that historically lacked dedicated best-practice guidance the way large new construction projects have. The guide walks project teams through every phase of a flooring renovation, from planning and choosing materials to installation and long-term upkeep, with an eye toward indoor air quality, occupant health, accessibility, durability, and sustainability. It draws on established frameworks, including LEED, the CHPS Criteria (Collaborative for High Performance Schools), and the WELL Building Standard, but doesn't require certification. It's built specifically for the realities school districts face: tight budgets, limited staff, aging buildings, and the need to avoid disrupting classes. This isn't a homeowner program, but it points to a broader shift worth noting: even routine renovations, not just big new buildings, are getting more structured guidance on health and sustainability. The Center for Green Schools says more guides covering HVAC and lighting are already in development. If your local school district is planning renovations, this resource may factor into their decisions, though it has no direct bearing on home energy upgrades or rebates.
Antora raises $550 million for U.S.-made thermal battery storage
Antora Energy, a US company that makes thermal batteries, has raised $550 million in new funding. These batteries store electricity as heat inside insulated blocks of solid carbon, then release it later as power or heat for industrial use. The money came from a mix of new and existing investors, including Salesforce Ventures, Breakthrough Energy Ventures, and Lowercarbon Capital, among others. The funding follows a recent project in South Dakota, where Antora installed more than 200 thermal batteries at a bioprocessing plant, delivering 50 megawatts of power and 5 gigawatt-hours of storage. The company built and got that project running in under a year. Antora makes its batteries at a factory in San Jose, California, which it recently expanded with two new facilities, doubling how much it can produce. With this new funding, the company plans to build a second US manufacturing site and roll out more projects at a faster pace. This is industrial-scale energy storage technology aimed at factories, data centers, and large facilities rather than individual houses. There is no home product or rebate tied to this news. Still, it points to growing US investment in storing energy for later use, which could shape how power grids handle demand in the years ahead, including in areas where homeowners rely on the same regional grid for electricity.
Hyundai and Kia’s record US sales run is showing no signs of slowing down
Hyundai and Kia posted record US sales in July, and hybrids and electric vehicles drove most of the growth. Hyundai sold 82,480 vehicles, up 4% from last year, while Kia sold 75,867, both the best July totals ever for the brands. Hybrid sales jumped sharply for both companies: Hyundai's rose 35%, with the Sonata, Elantra, and Tucson hybrids all hitting new July highs, while Kia's hybrid sales more than doubled, up 108%, led by record months for the Sportage hybrid, Carnival hybrid, and Sorento. Fully electric models had a mixed month. Hyundai's IONIQ 5, its top-selling EV, dropped 38% in July, though year-to-date sales are down only slightly. The larger three-row IONIQ 9 fell 35% for the month but is up 166% for the year so far. Kia saw a similar pattern: EV6 sales are down about a third this year, while its own three-row IONIQ 9 is up roughly 30% year-to-date. For homeowners weighing an electric or hybrid vehicle alongside home upgrades like a heat pump or EV charger, this signals that hybrid options from these brands are in high demand right now, which could affect availability or wait times. Kia also plans to launch a smaller, more affordable electric SUV, the EV3, later this year, expected to start around $35,000, though pricing isn't finalized. That could be worth watching if you're shopping for a lower-cost EV to pair with home charging.
Staying Safe While Charging
After a shooting last weekend at an In-N-Out and visitor center in Twin Falls, Idaho, left a man wounded while he sat in his Tesla at a Supercharger, there's been talk about safety at EV charging stations. It's worth keeping some perspective if you own or are considering an electric car: mass shootings remain rare, and you're statistically more likely to be hurt by something like a fall, carbon monoxide, or the broader effects of climate change than by an incident like this one. It could just as easily have happened at a gas station or a restaurant, and most home EV charging happens overnight in your own driveway or garage, away from any of this. For public charging, a few habits can help with everyday risks like theft or carjacking, not just rare violent events. Getting out of the car while it charges, rather than sitting inside, makes it easier to move, get away, or find help if something goes wrong. Staying aware of your surroundings instead of staring at your phone helps you notice trouble sooner. And with more charging options available now than a few years ago, it's worth picking a station based on lighting, visibility, nearby businesses, and how the area feels — and simply leaving if a spot seems off. None of this is a reason to reconsider an EV purchase. The bigger risk to your health and safety, long term, comes from not addressing climate change at all.
It’s Official: US Army Dives Into The EV Tank
The US Army has signed an 18-month contract with California EV startup Harbinger Motors to build uncrewed, hybrid-electric supply trucks. The deal runs through defense contractor American Rheinmetall, with autonomous-driving firm Forterra and Primordial Labs also involved. The vehicles are meant to carry supplies to and from front-line troops without a driver, cutting risk to soldiers and reducing noise and heat that can give away a position. This is a military and industry story, not a home energy one. It has no direct bearing on rebates, heating and cooling systems, or upgrades for your house. The interesting bit for anyone tracking EV technology generally is the "range extender" idea: Harbinger's trucks pair a battery with a small onboard gas tank (or, in other designs, a hydrogen fuel cell) to recharge on the go, giving up to 500 miles of range. That same range-extender concept shows up in some EVs sold to regular buyers, easing worries about running out of charge. The bigger context: the Army has been slow to adopt electric vehicles because of battery safety concerns in war zones, but is now moving forward as autonomous and hybrid technology matures. None of this changes anything about home electrification programs, tax credits, or rebates. It is simply a sign that hybrid and electric drivetrains are spreading into new markets, including defense, which may eventually push more investment and lower costs across the broader EV and battery industry.
Tandem PV acquires nexTC coating processes for perovskite solar panel efforts
Tandem PV, a U.S. company developing next-generation solar panels, has acquired nexTC, an Oregon-based firm that makes specialized coating technology used in these panels. The deal brings nexTC's coatings, patents, and its founder, Cory Perkins, into Tandem PV as the company works to scale up manufacturing at its demonstration factory in California. The technology at the center of this deal is a "tandem" solar panel, which pairs a thin layer of a material called perovskite with a standard silicon layer. Each layer captures a different part of sunlight, so the panel produces more electricity from the same amount of roof or ground space than a conventional silicon-only panel. The coating technology nexTC brings helps manage how electric charge moves through the panel while still letting light reach the silicon underneath, which affects how efficient, durable, and manufacturable the panels end up being. This news is about a business acquisition and technology development, not a product on the market yet. Tandem PV's factory currently produces panels at a small scale for testing and customer trials, not for widespread residential installation. So there's nothing to act on for your own roof right now. But it's a sign that perovskite-silicon tandem panels, which promise more power per panel than today's typical solar equipment, are moving closer to real manufacturing. If this technology reaches the market successfully, it could eventually mean more efficient solar options for homeowners, though pricing, availability, and timelines for that are not yet known.
Argentina’s solar train brings zero-emission travel to an ancient trade route
In Argentina's Jujuy province, a solar-powered passenger train just marked two years of service on a 42 km (about 26 mile) route through the Quebrada de Humahuaca, a canyon recognized by UNESCO as a historic trade corridor. The Tren Solar de la Quebrada runs on a 352 kWh lithium-ion battery pack, with regenerative braking (the train recovers energy while slowing down) giving it enough range to cover the roughly 52-mile round trip on one charge. Six stations along the line have EV-style chargers, all powered by a dedicated 6 megawatt solar farm with battery storage backing it up, so the whole operation runs without fuel or emissions. This is a story about public transit, not home energy equipment, so there's nothing here that changes what a homeowner might install or apply for. It's worth knowing about mainly as a sign of how far battery and solar technology has come outside the electric vehicle and home-solar world most readers are used to hearing about. Since its official launch, the train has carried 90,000 passengers, and about a third of those rode through a social program meant to make the train accessible to local communities. The current route runs between the towns of Volcán and Tilcara. Plans exist to extend it north toward Humahuaca and eventually to La Quiaca near the Bolivian border, though no timeline for that expansion has been set.
Hyundai is about to launch the IONIQ 3, and it plans to sell over 40,000 in 2027
This one doesn't apply to your house. Hyundai is preparing to launch a new small electric car, the IONIQ 3, in Europe later in 2026, with mass production starting in mid-August. The company expects to sell more than 40,000 of them in 2027. It's built for the European market only, and there's no mention of it coming to the US. Prices have been announced in some European markets: about $29,800 to start in the UK and around $32,000 in the Netherlands, rising to roughly $42,700 for the top trim. The car comes with two battery options, a smaller 42.2 kWh pack good for about 213 miles of range, and a larger 61 kWh pack good for about 308 miles, using the WLTP test standard common in Europe. Fast charging can take either battery from 10% to 80% in about 29 to 30 minutes. The IONIQ 3 also introduces Hyundai's new Pleos infotainment system, built on Android Automotive, with large touchscreens and an AI assistant called Gleo. None of this changes what's available to US buyers right now, since the car is aimed squarely at Europe, where small electric vehicles make up a growing share of the market. If you're weighing an EV purchase for your home charging setup, this is more a sign of where Hyundai's lineup is headed globally than something you can buy or plan around today.
This solar-powered ‘ambulance’ has a range of up to 444 miles
A team of 23 students at Eindhoven University of Technology in the Netherlands has built Stella Juva, a solar-powered mobile clinic they call the world's first solar ambulance. Rather than rushing patients to a hospital, it brings medical care to them, letting healthcare workers run blood tests, screen for tuberculosis and malaria, give vaccines, and do pregnancy ultrasounds in remote areas with little fuel, electricity, or usable roads. Rooftop solar panels power both the vehicle and its medical equipment, and the team estimates it can travel up to 715 kilometers (444 miles) on a sunny day, though that range hasn't been tested in real conditions yet. The panels use AIKO's All Back Contact solar cells, a design that puts the wiring on the back of each cell to capture more light and hold up better in heat, useful for a vehicle meant for hot climates. The battery is coated with an epoxy from PPG meant to slow the spread of heat and fire if a cell overheats; PPG also gave the project a $46,250 grant. This isn't a product for homeowners to buy or install. It's a research and humanitarian project, and the real test comes in August, when the team drives Stella Juva across Kenya and has healthcare workers simulate patient care, including tuberculosis treatment, at remote sites to see how it holds up outside the lab.
Tesla Supercharger shooting sparks EV charging safety debate
After a shooting at a Twin Falls, Idaho In-N-Out with an attached Tesla Supercharger last week, EV owners online pushed a product called EVject as a fix: a $299 breakaway connector that lets you drive off while still plugged in, instead of waiting to unlock the charge port and disconnect the cable. That wait is real. On every EV, including Tesla's, the charging connector locks in place while power is flowing, a safety feature required by charging standards, so you can't simply drive away mid-session without unplugging first. What's getting left out of the social media push is that EVject is the same accessory Tesla sued over in 2024, arguing in court that it could overheat to dangerous temperatures with no built-in protection. EVject later added thermal protection and Tesla dropped the suit, but that history is worth knowing before treating it as a settled safety solution. It's also a device that only helps if you have the seconds and presence of mind to act during a sudden, chaotic event, which may not be realistic. None of this points to something homeowners need to buy or install. The more useful long-term fix, if it happens, would be an automaker-built emergency disconnect that lets a driver safely leave a charging stall, similar to Tesla's control over both its cars and its Supercharger network. For now, this is a safety debate playing out across the EV industry, not a change to how home or public charging works today.
Europe’s 700-Bar Hydrogen Network Is Closing And Reappearing
Europe is quietly overhauling its public hydrogen refueling network, and this is really a story about hydrogen cars, not home energy upgrades. Germany closed 36 early hydrogen stations in 2025, mostly small ones built for passenger cars that never showed up in the numbers expected. In their place, operators are building larger "dual-pressure" stations meant for buses and trucks, but many still carry the higher 700-bar fueling capability originally designed for cars, largely because EU rules (called AFIR) require it along major highway corridors by 2030. The numbers show the shift: high-pressure-only stations dropped from 108 to 32 between 2023 and mid-2026, while dual-pressure stations rose from 50 to 129. The overall station count barely changed. Meanwhile, battery-electric trucks are far outpacing hydrogen ones on Europe's roads — over 15,000 battery trucks versus 170 hydrogen trucks by the end of 2024. The EU's own assessment found the existing hydrogen network is already big enough for current demand; the real problems are too few hydrogen vehicles and expensive fuel, not a lack of stations. For homeowners, this doesn't affect home energy programs, rebates, or heating equipment. It's a look at how a different piece of the energy transition — hydrogen transportation — is playing out in Europe, with regulators and grants funding infrastructure that may be running ahead of actual demand for hydrogen vehicles.
Fuel Cell Trucks And Buses Are Still Coming, And They Still Need More Green Hydrogen
This news is about buses and trucks, not homes, but it touches on hydrogen as a fuel source, which comes up in energy conversations. Fuel cell vehicles run on hydrogen instead of batteries, and "green hydrogen" means the hydrogen is made using renewable energy rather than natural gas. Researchers are looking at new ways to produce it cheaply, including breaking down seaweed and even plastic waste, though these methods are still early and not yet used at any real scale. On the vehicle side, transit agencies are moving ahead with hydrogen fueling stations for buses. In California, SamTrans (San Mateo County) is building what's billed as the largest hydrogen bus fueling station of its kind, and Orange County's transit authority has a $27.5 million contract to build one at its Garden Grove bus depot, where it plans to grow its fleet from 10 to 50 hydrogen buses. A new station for hydrogen truck fleets has also opened in Santa Fe Springs. In Europe, companies like Bosch and MAN are testing fuel cell buses and trucks in Spain and Germany, generally as a complement to battery-electric vehicles for longer routes. None of this points to a home heating or vehicle option for homeowners. Hydrogen fuel cells are being aimed at buses, trucks, and heavy industry, not home energy systems, where researchers and companies say battery electric and building electrification remain the more practical path.
New suggested way to estimate AI emissions
A software company called Watershed has proposed a way for businesses to estimate the greenhouse gas emissions tied to their use of artificial intelligence. Right now, companies that build AI tools, like Anthropic and OpenAI, mostly don't share detailed data on the energy and emissions behind each AI query. Big cloud providers such as Amazon, Google, and Microsoft have released some figures, but the details are still thin. Watershed's proposal suggests measuring emissions per million "tokens," the small chunks of text that make up an AI prompt, along with the electricity used to generate them. This is mainly a story about how businesses track their own carbon footprints, not something that changes anything about your house or your energy bills. But it connects to a bigger trend worth knowing about: AI systems run on data centers that use large amounts of electricity, and that demand is growing fast enough to affect regional power grids. As more companies try to measure and disclose this impact, it could eventually shape how utilities plan for demand and price electricity, which does trickle down to household rates over time. For now, there's nothing here that calls for you to do anything to your home. It's a look at how the tech and corporate sustainability world is trying to get a handle on AI's hidden energy costs, a preview of decisions that may, eventually, ripple out to the grid we all depend on.
Tesla Model Y RWD 2026 Review: an entry-level trim with top-of-the-line technology
Tesla's cheapest Model Y, the 2026 RWD (Standard), just got a real-world test drive, and the results matter mostly for anyone weighing an EV purchase for efficiency and home energy use rather than driving feel. The version reviewed uses an LFP battery (a longer-lasting, more stable chemistry) rated for 463 km (288 miles) of range, and it hit that number almost exactly over 550 km of mixed driving. Charging from 10-80% took 24 minutes at a Supercharger. One detail worth noting for homeowners: this LFP pack supports V2X (vehicle-to-everything) discharge above 12 kW, meaning with the right home setup, the car can act as a roughly 60kWh backup battery for a house during an outage, without the degradation worries you'd have with other battery types. Price is $39,990 in the US or $49,990 CAD, about $6,000 to $15,000 less than the Premium trim, but it cuts real equipment: a blacked-out panoramic roof, steel instead of aluminum hood, a weaker 7-speaker sound system, no towing package, and single-pane windows that let in more wind noise. Full self-driving assistance requires a $99-a-month subscription, and basic lane-centering (previously bundled free) is no longer included without it. For homeowners specifically, the takeaway is the V2X backup-power capability. If you're considering an EV partly as a hedge against power outages, this feature is worth asking about, since it varies by trim and by where the vehicle is built (US-built versions use a different, non-LFP battery).
Tesla FSD v14 Lite tied to rising HW3 computer failures, owners report
This is Tesla news, not a home energy story, but here is what happened. Owners of older Tesla vehicles with "Hardware 3" (HW3) self-driving computers are reporting overheating and, in some cases, full failures of that computer after installing a new version of Tesla's Full Self-Driving software called "v14 Lite." Tesla pushed this update to HW3 cars in late June and made it widely available on July 21. HW3 has much less memory and processing power than Tesla's newer computer, and the new software appears to demand more than the older chip can handle. Several owners have posted screenshots showing the computer hitting temperatures above 90°C, triggering a shutdown of self-driving features until it cools. Some report the computer dies completely and has to be replaced. Overheating alerts on HW3 aren't new — they've long been linked to cooling system issues like low coolant or a clogged radiator — and Tesla hasn't confirmed the software is to blame. But the timing, with failures clustering right after the update, has raised questions about whether the new software is accelerating wear on aging hardware. This story doesn't involve home energy upgrades or rebates. If you're a Tesla owner with an HW3 vehicle, the practical point is that thermal alerts and computer failures are being reported after this software update, though the cause hasn't been officially confirmed.
Elon Musk Is Still Saying Crazy Things About “Era of Abundance,” Among Other Things
This is opinion commentary about Elon Musk's comments in a recent interview with The Economist, not energy-efficiency or rebate news, so it does not affect any home upgrade decisions. Musk said that "money won't matter" by 2036, arguing that robots and automation will make goods and services so cheap that pay and pricing become irrelevant. When asked how people would get by as jobs disappear, he suggested the U.S. Treasury should simply issue checks to people, without addressing how that would be funded or whether it would cause inflation. The piece criticizes Musk for this reasoning, pointing out that hunger and poverty persist today despite there being enough resources to address them, and that Musk's own actions — including cuts to U.S. foreign aid programs — have arguably worsened hardship rather than reduced it. The author also ties this back to Tesla, arguing that Musk has been diverting company resources toward humanoid robots (Tesla's Optimus project) instead of developing new electric vehicle models, which the writer says has weakened Tesla's position as a leading EV maker. There is nothing here about rebates, tax credits, heat pumps, weatherization, or any program relevant to home energy upgrades. It is purely commentary on Musk's public statements and their implications for Tesla's business direction, not a policy or funding development homeowners need to track.
Aniioki’s latest 6,000W dual-motor e-bike blurs past the line so much it’s basically an electric motorcycle
A company called Aniioki has released a new e-bike, the A9 Pro Max Dual Motor 2.0, that pushes far past what most people think of as an e-bike. It has pedals and a bicycle-style saddle, but with up to 6,000 watts of peak motor power, claimed top speeds above 50 mph, and a battery pack up to 5 kWh (5,000 watt-hours), it performs more like a small electric motorcycle. For comparison, a typical commuter e-bike battery holds around 600-800 watt-hours. The bike starts at $2,899 and comes in three versions, with top speeds ranging from about 40 mph up to nearly 60 mph depending on the motor and battery setup. This matters for homeowners mainly if you're thinking about buying one to ride, charge, or store at home. Legally, in most places, bikes like this don't qualify as electric bicycles. US regulations for legal e-bikes typically cap motor power around 750 watts and assisted speeds at 20-28 mph. A bike with 6,000-7,000 watts and speeds near 60 mph is likely to be classified as an electric moped or lightweight motorcycle instead, which can carry different rules for registration, insurance, and where you're allowed to ride it. There's no rebate or energy-efficiency angle here. This is simply a sign that some "e-bikes" on the market now blur into motorcycle territory, so it's worth checking your state and local rules before assuming a bike like this can be ridden, licensed, or charged the same way as an ordinary electric bicycle.
Volvo’s next electric SUV will start in the upper $40,000 range
Volvo plans to bring a new electric SUV, the EX50, to US dealerships in 2027. It will replace the EX40 as the automaker's cheapest electric model, starting in the upper $40,000 range, a bit less than the current EX40, which starts at $56,545. The EX50 will be bigger than the EX40, both taller and longer, and built on a new 800-volt platform shared with the recently introduced EX60. That platform is expected to bring faster charging and longer driving range compared to older Volvo electric models. This isn't directly about home energy upgrades, but it's worth noting for anyone weighing an EV purchase alongside home charging plans. A lower starting price and a more modern, faster-charging platform could make the EX50 a more practical option if you're considering pairing an electric vehicle with home solar or a Level 2 charger. The car will compete with popular electric SUVs like the Hyundai IONIQ 5, Toyota bZ, and Ford Mustang Mach-E, all in a market still led by the Tesla Model Y. No firm launch date, exact price, or range figures have been confirmed yet, so anyone thinking about buying this model will need to wait for more details closer to 2027. If you're planning home charging equipment or rebates tied to an EV purchase, it may be worth keeping an eye on official pricing and specs once Volvo confirms them.
VinFast Debuts Electric Scooter Lineup and Battery-Swapping Network in the Philippines
VinFast, the Vietnamese electric vehicle maker, has launched a lineup of electric scooters in the Philippines, along with plans for a battery-swapping network. The company opened 21 retail showrooms in late July, with more than 100 additional locations planned in cities including Metro Manila, Metro Cebu, and Metro Davao. It also plans to install roughly 30,000 battery-swapping stations nationwide, where riders can trade a depleted battery for a charged one in under a minute for a flat fee of about 60 cents. The lineup includes three models — the Evo, Feliz II, and Viper — all using swappable lithium iron phosphate batteries (a stable, long-lasting battery chemistry) and rated for water resistance in flooding up to half a meter deep. Prices range from about $1,210 to $1,855 depending on model and whether the buyer owns one, two, or no batteries outright. Riders who skip owning a battery instead pay a monthly fee of about $7.60 per battery, with VinFast covering maintenance and replacement if the battery's capacity drops below 70 percent. Vehicles come with a 6-year or 72,000-kilometer warranty. This news is specific to the Philippines and doesn't involve U.S. programs, rebates, or home electrical work. For American homeowners, it's mainly a sign of how battery-swapping and subscription-based ownership are being tested elsewhere as ways to make electric vehicles more affordable — ideas that could eventually show up closer to home as EV infrastructure keeps expanding.
Lectric Back to School e-bike sale with up to $804 savings, Monarc Marker + Tracer e-bike bundles from $1,899, EGO Multi-Head, more
This roundup covers e-bike and outdoor equipment deals, not home energy upgrades, so it does not connect to insulation, heat pumps, or rebate programs that affect your house directly. Still, a few items may interest anyone shopping for electric transportation or yard equipment this week. Lectric has launched a Back to School sale on e-bikes, with bundle savings up to $804. The standout deal is the XP4 750 Folding Utility e-bike, discounted to $1,299 after a checkout code, which includes a free bundle worth either $593 or $603. Separately, Monarc has limited-time launch pricing on two e-bikes: the Marker All-Terrain Smart e-bike, bundled with two batteries and a smart helmet for $1,999, and the Tracer Urban Commuter e-bike with the same helmet bundle for $1,899. Both of these Monarc deals are set to expire soon. On the yard equipment side, EGO is offering a rare discount on its carbon fiber Multi-Head Combo Kit, which includes a 16-inch string trimmer and 8-inch edger, for $429. Worx also has a new low price on a 10-inch chainsaw and pole saw combo tool, and a past deal on the Aiper IrriSense 2 has returned. None of these are tied to energy-efficiency rebates or programs, so they are worth a look mainly if you already need new e-bikes or outdoor power equipment at a discount.
BYD opens Denza Z9S pre-orders, claiming the ‘world’s longest’ EV range at 1,100 km
This is a car story, not a home energy upgrade story, so it has little bearing on your house. Briefly: BYD's luxury brand Denza has opened pre-orders in China for a new electric sedan, the Z9S, which the company says has the longest range of any mass-produced EV at 1,100 km (about 683 miles) on a full charge. Prices start under $50,000 and go up to about $57,700 for the fastest version. The car comes in three range versions (484, 571, and 683 miles) and can charge very quickly, going from 10% to 70% battery in as little as 5 minutes, or to nearly full in 9 minutes. It's offered with either a single rear motor or a more powerful three-motor setup, and includes a large touchscreen interior and driver-assist technology. None of this affects home electric-vehicle charging programs, rebates, or upgrades on its own, and the car isn't sold in the US. If you're weighing a home EV charger or panel upgrade, what matters for your own planning is the charging speed and battery size of whatever vehicle you actually buy, along with what your utility or state offers for EV charging equipment, not this specific overseas launch.
After A Long, Hot Summer, “Climate-Hushing” Is Missing The Moment
This story is about politics and public opinion, not a specific rebate or program change, but it touches on things that matter to homeowners thinking about climate and energy upgrades. Wildfires have destroyed hundreds of buildings in Spokane County, Washington, and smoke from Canadian wildfires recently spread across the Northeast. A new study in the journal Frontiers in Environmental Health found that rising wildfire smoke over the past 16 years has canceled out health gains from cleaner cars and industry, and is now the leading pollution source affecting pregnant women in the US. A separate survey of about 3,500 adults, from a University of California - Santa Barbara research team, looked at whether talking about climate change turns off voters, as some political strategists claim. It found that climate ranked low among voters' stated top priorities, but that mentioning "climate" doesn't cost support when tied to specific policies, and that voters who care about climate are far more motivated than opponents are turned off. The same survey found strong, broad support across party lines for specific technologies: 69 percent viewed rooftop solar favorably, with wind, large solar farms, and heat pumps also polling well. For homeowners, the practical takeaway is less about elections and more about the backdrop: public support for solar, wind, and heat pumps remains high even as climate itself stays a lower-ranked issue, and wildfire smoke is an increasingly documented health risk regardless of where you live relative to a fire zone.
Design from Scratch vs. Adapting Existing Plans
A homeowner near South Metro Atlanta is planning a "Pretty Good House" build — a design approach that aims for solid energy performance (good insulation, airtight construction, quality windows) without going all the way to strict passive-house standards. Working with cost concerns, they're weighing two paths: hiring an architect to design the home from scratch, or buying stock house plans from an online plan dealer and modifying them to hit better energy targets by upgrading insulation, windows, and doors. They noted architect fees quoted as high as 15% of the total build cost and asked whether others have taken the "adapt existing plans" route successfully. This is a discussion post on a building-science forum, not a report of new program, product, or rebate news. There's no update here about incentives, deadlines, or technology changes that would affect other homeowners directly. It's simply one person's question about design strategy for a new build, posted for others in the community to weigh in on based on their own experience. As of this posting, no replies had been added yet. For anyone in a similar position — planning new construction with energy efficiency in mind but trying to control design costs — the underlying question is a real one: whether starting with a pre-drawn plan and upgrading its building envelope can get close to custom-architect results for less money. But this particular post doesn't offer an answer, just raises the question.
Janus Battery Swap Trucks Show The Way
This news is about heavy trucking, not home upgrades, but it's worth knowing where battery technology is headed. An Australian company called Janus Electric is converting old diesel semi trucks to electric power once their engines wear out, rather than building new electric trucks from scratch. Janus says this conversion costs about a quarter of what a new electric truck costs. The trucks use a battery swap system instead of plug-in charging: a truck pulls in, a forklift swaps out the depleted battery pack for a charged one, and the truck is back on the road in about four minutes. Janus doesn't own the trucks' batteries outright — it rents them out as a service, so fleet owners pay less upfront and always get a battery that's been checked and maintained. The swap approach also uses smaller, lighter battery packs than trucks built for long single trips, because the truck doesn't need enough range for an entire journey on one charge. That keeps the trucks lighter and lets them carry more cargo. It also means charging can happen slowly, using standard power rather than expensive fast-charging equipment. None of this changes anything for your house directly. But it's a sign that battery swapping and slow, low-cost charging are becoming a real alternative to building out expensive fast-charging infrastructure — a trend that could eventually show up in other parts of the energy world, including how batteries and grid equipment are priced and managed at the residential level.
Selling To Private Equity Without Selling Out Your Mission
This story is about what happens behind the scenes at HVAC companies, not a specific product or rebate, but it's worth knowing if you rely on a local heating and cooling company you trust. Many independent HVAC businesses are being bought out by private equity firms. The company name on your technician's truck often stays the same, but who owns the business, and what they prioritize, can change. The article uses a food brand as a comparison: a family-owned tortilla company was bought by a large corporation, and the ingredients quietly got cheaper while the brand name stayed the same. The concern with HVAC buyouts is similar: a new owner focused on profit could push more aggressive sales tactics or cut corners, even if the storefront and truck decals look unchanged. The piece also shares one contractor's experience selling his own HVAC business to private equity, describing how he tried to protect his employees' pay structure and company culture during the sale. For a homeowner, the practical takeaway is just to pay attention over time to whether the same company you've used for years still handles service calls, pricing, and recommendations the way it used to. A change in ownership isn't always visible on the surface, but it can eventually show up in how you're treated as a customer.
Test Drive: BYD eMAX7 & the Quiet Shock of an Electric Future for the Soccer Mom
This is a review of the BYD eMAX7, a seven-seat electric vehicle tested on roads in the Philippines. It's not directly tied to home energy upgrades, but it touches on something homeowners considering an EV should know: charging at home. The reviewer found the eMAX7 quiet, quick off the line, and comfortable for daily driving and family use, though the third-row seats are tight and better suited to children. The bigger point for anyone thinking about buying an EV is what it takes to charge one at home. The eMAX7's charger needs a dedicated 60-amp electrical socket, and a standard household extension setup isn't enough to handle it. That means charging an EV like this isn't just a matter of plugging into any outlet in your garage. Homes built before electric cars became common may need their wiring checked or upgraded to support a charger like this one. The review also notes that public fast chargers can get crowded, sometimes with plug-in hybrids that don't strictly need them, which can affect how convenient charging away from home turns out to be. For a homeowner weighing an EV purchase, the takeaway isn't about this specific car's price or availability, but the reminder that home electrical capacity is part of the real cost and planning of going electric, alongside the vehicle itself.
Is China Winning On AI Because It Just Has A Better Approach To Business?
This piece is a commentary on business strategy and AI competition between the US and China, not a home energy story. It doesn't touch on heat pumps, insulation, or rebate programs, so there's nothing here that affects a homeowner's own upgrade plans. The core argument, offered by a reader and expanded on by the author, is that American tech companies tend to compete until two big players dominate a market (think GM and Ford, or Android and iOS), which lets prices rise once the market matures. Chinese industry policy, by contrast, encourages many competitors to keep entering a sector and discourages the kind of consolidation that leads to just one or two winners. That keeps prices lower for consumers but means investors don't get the outsized returns common in the US model. The piece applies this idea to AI, suggesting US companies like OpenAI and Anthropic are racing for dominance and investor payoff, while Chinese AI startups are competing more directly for customer loyalty in a market that stays open to new entrants. The author notes this same pattern has played out in solar and EV manufacturing in China, industries relevant to home energy upgrades in a general sense, but the article itself is a think piece about market structure and AI investment, asking readers whether they agree with the theory. It offers no new program, deadline, or product news for homeowners to act on.
Top Selling Electric Vehicles in the World — June 2026
Global electric vehicle sales keep climbing. In June, plugin vehicle registrations worldwide rose 8% from a year earlier to about 2 million, with fully electric models (BEVs) up 21% while plugin hybrids (PHEVs, which pair a battery with a gas engine) fell 14%. Battery electrics now make up 30% of all new vehicle sales worldwide when combined with plugin hybrids, and 24% for the year so far, up from 6% five years ago and about 1% a decade ago. Outside China and the United States, where markets are behaving differently, EV sales jumped 52% year over year. The best-selling models worldwide remain the Tesla Model Y, BYD Song, and Tesla Model 3, a lineup that has held the top three spots for four years running. Chinese brands continue to gain ground: Leapmotor, a newer automaker, moved into third place among manufacturers with a record month, and BYD, Geely, and Tesla remain the top three overall. Among traditional automakers, Toyota, BMW, and Mercedes posted strong results, with BMW's new iX3 and Toyota's BZ4X showing gains. None of this changes rebates or incentives for home chargers or upgrades, but it's a sign of how fast the EV market is shifting worldwide. If you're weighing an EV purchase alongside home upgrades like a charger or panel work, the broader trend points to more electric models arriving and battery-only vehicles pulling further ahead of plugin hybrids in sales.
This Texas coal mine will soon be home to a 1.2GW solar farm
A big solar and battery project is breaking ground in Bremond, Texas, between Dallas and Houston. The $1.7 billion Big Rooter Power development, built by the investment firm Panamint Capital, will place a 1.2-gigawatt solar farm and 1.6 gigawatt-hours of battery storage on land next to an existing coal mine and coal-fired power plant. Both the mine and plant will keep running. The first phase, 491 megawatts, is due online in August 2028, with the remaining 658 megawatts following in 2029. This is part of a small but growing trend of building solar on old or active coal sites, since that land often draws less local opposition than farmland. Similar projects have gone up on former mines in Illinois, Kentucky, and Louisiana. Federal tax incentives helped push these projects forward, though recent federal policy changes have scaled back some of that support and canceled at least one mine-land solar grant. Panamint says it locked in its incentives before those changes took effect, including a tax credit covering half the project's cost, partly because the site qualifies as an "energy community," a designation for land affected by coal plant or mine closures. For homeowners, this project itself does not create a rebate or program you can apply for. It mainly reflects the broader shift in Texas, where solar is now generating more electricity than coal, helping meet rising power demand from air conditioning, data centers, and other users on the state's grid.
Believe It Or Not, EV Battery Swapping Is Coming To The US
This news is about heavy trucks, not houses, but it points to where battery technology is heading. A California startup called Revoy has raised $27 million to bring battery swapping to big diesel trucks. Instead of buying a new electric truck, a fleet clips a battery unit between the cab and trailer. The unit powers its own set of wheels and cuts diesel use dramatically, while the truck keeps running on its regular engine as backup. Independent testing found real-world fuel savings ranging from about 65% to 90%, depending on hills and terrain, with the biggest gains on flat routes. The battery can also recharge itself somewhat through regenerative braking, the same technology that slows an electric car by capturing energy instead of just using brake pads. For homeowners, there's no direct upgrade or rebate here. But the story is a reminder that battery swapping, long dismissed for passenger cars, is finding a foothold in trucking first because it solves a real cost problem: diesel prices have spiked amid the ongoing conflict with Iran, squeezing freight companies and farmers alike. If swapping proves out in trucking, the underlying technology and cost curve could eventually filter down to smaller vehicles and even home backup batteries, though that's speculation, not something happening yet. For now, this is industry news worth watching rather than anything that changes what's available for your own home or car.
Ember’s Electric Coaches Show Intercity Bus Electrification Is Already Here
This is transit news out of Scotland, not a home upgrade story, but it's a useful sign of how fast electric vehicles are moving into everyday service. Ember, an Edinburgh company, now runs more than 100 all-electric coaches on intercity routes across Scotland, reaching Edinburgh, Glasgow, Dundee, Aberdeen, Inverness, Fort William, Oban and Thurso. Over the year to January 2026, it carried more than 1.5 million passengers and covered over 120 million zero-emission passenger miles, including hilly Highland routes and cold winters that are harder on batteries than flat, mild terrain. The coaches charge several times a day rather than relying on one long charge, using charging stations Ember has built in several Scottish cities, with chargers rated up to 300 kW. Scotland's latest zero-emission bus funding round is backing 100 more electric coaches and 43 more chargers for Ember, a project worth £53.8 million, with £13.2 million from public funds and the rest private investment. The same funding round supports 60 more electric buses for Edinburgh's city bus operator, Lothian, and more zero-emission vehicles for another regional operator, Stagecoach. None of this changes anything about home energy upgrades or rebates. It's included here as a broader signal that battery-electric transport is proving itself in demanding, real-world conditions, including cold weather and hilly terrain, which is the same kind of performance question homeowners weighing heat pumps or electric vehicles for their own use often ask about.
Funding for Renewables in Asia & Africa Ready
A fund called the Emerging Africa and Asia Infrastructure Fund has agreed to lend up to $50 million to Ukko Renewable, a company building wind, solar, and hydro projects across Southeast Asia. The money will help move an initial batch of projects, totaling more than two gigawatts, from the planning stage toward actual construction, with a longer-term pipeline of over three gigawatts in Vietnam, the Philippines, and neighboring countries. The financing is meant to close a common gap in renewable energy development: the early, risky work of scouting sites, studying the power grid, and doing initial engineering, before a project is far enough along to attract mainstream investors. In Vietnam, the projects are tied to the country's updated national power plan, and in the Philippines they fall under a government renewable energy auction program. Once built, this initial set of projects is expected to cut about 2.2 million metric tons of carbon dioxide emissions a year and supply power to more than 2.8 million people. This is a financing and infrastructure story about utility-scale power development in Asia, not a home energy program. It has no direct bearing on rebates, incentives, or upgrades available to homeowners elsewhere. It does, though, reflect a broader pattern of money moving into renewable power generation worldwide, the same kind of shift that, over time, shapes how much clean electricity is available on the grid that eventually reaches individual homes.
Here are the best electric bikes you can buy at every price level in August 2026
This roundup covers electric bikes, not home energy upgrades, so it falls outside what Retrofit Relay usually covers for your house. Still, if you're weighing an e-bike as a way to cut car trips and gas costs, here's the gist. At the low end, Lectric's XP LITE 2.0 ($799) and XP4 ($999) stand out as budget picks with strong power for the price, while the Ride1Up Portola ($1,095) offers a stylish folding fat-tire option. Between $1,000 and $2,000, choices widen to include cargo bikes like the Lectric XPedition 2.0 ($1,399), commuter models like the Aventon Soltera.2 ($1,199) and Ride1Up Roadster V3 ($1,295), and versatile "SUV-style" bikes like the Ride1Up Vorsa ($1,495). The new Monarc Marker ($1,999), from the maker of Lectric, adds a five-year warranty and dual batteries for adventure riding. Spending more buys higher-end components: the Ride1Up TrailRush ($2,095) and Lectric ONE ($2,399) bring mountain-bike-grade parts and premium drivetrains, while cargo-focused riders might look at the Tern Quick Haul ($2,999) or Xtracycle Hopper ($2,499). Above $3,500, bikes like the Priority Skyline ($3,999) and Tern GSD ($5,399) are built as genuine car replacements, with premium brakes, gearboxes, and battery capacity to match. None of this connects to insulation, heating systems, or rebate programs — it's simply a buyer's guide to e-bikes across price ranges, useful if transportation costs are part of your household energy picture.
Europe EV Sales Report: BEVs Jump 50% & Reach 26% Market Share!
Electric car sales in Europe kept climbing in June, with fully battery-powered vehicles (BEVs) up 50% from a year earlier to about 366,000 registrations, a new monthly record. Add in plug-in hybrids (PHEVs, which pair a battery with a gas engine), and plug-in vehicles overall took 37% of the market. So far this year, battery-electric cars hold 23% of European sales, already ahead of last year's full-year result of 20%. For homeowners who also think about home energy upgrades, the pattern is similar to what's happening with heat pumps: falling prices and more model choices are pulling buyers toward electric options faster than expected. Tesla's Model Y and Model 3 topped the sales charts, and Chinese brands like BYD and Leapmotor are gaining ground quickly, with BYD's sales up 147% year over year. Small, affordable electric cars are becoming more competitive with gas models, much like affordable heat pump options are catching up with furnaces and air conditioners. None of this changes any specific rebate or program in the US, since this is a snapshot of the European car market. But it's a sign that electrification, in both cars and homes, is moving from a niche choice to a mainstream one as costs come down. If you're weighing an EV purchase or a heat pump alongside other home upgrades, this trend suggests the price and selection gap with traditional options keeps narrowing.
How Much Of The Year Can A Heat Pump Handle?
A common worry about heat pumps (systems that both heat and cool a home by moving heat rather than burning fuel) is that they can't handle cold winters. New data on how many hours cities actually spend at different temperatures suggests that worry is overblown. Even in Fairbanks, Alaska, one of the coldest cities in North America, 58% of the year falls into an "easy" range that a standard single-stage heat pump can handle, with another 25% needing only a cold-climate rated model. Only 16% of the year is genuinely hard for a heat pump to manage on its own. Milder cold climates fare even better. Minneapolis, described as a realistic worst case for the continental U.S., spends 81% of the year in the easy range and just 3% in the hard range. Cleveland comes in at 91% easy, and Charlotte, North Carolina has no hard hours at all. In practice, a heat pump sized for cooling a home often keeps working effectively down to around 25 to 30 degrees Fahrenheit, covering most of a typical heating season. For the coldest remaining hours, pairing the heat pump with a furnace as a backup, known as a hybrid setup, is one option instead of relying on a top-tier cold-climate unit alone. Beyond handling cold, people who've switched often say heat pump heat feels more even and comfortable than furnace heat, since it runs longer at lower output and warms surfaces throughout the house rather than blasting short bursts of hot air. A free calculator covering 185 cities in the U.S. and Canada lets you check how your own city's temperatures break down.
Building Science for the Rest of Us
An energy expert who spends her career checking weatherization work explains why homes get uncomfortable, moldy, or wasteful, and it usually comes down to a handful of physics basics. Heat moves from warm to cold spaces, so rooms over garages or behind attic knee walls stay uncomfortable until you seal air gaps and add insulation that breaks the thermal path between conditioned and unconditioned areas. Moisture behaves the same way, moving from wet to dry — which is why a damp basement or crawlspace, even one you never use, can send water vapor into the rest of the house unless it's sealed off with a vapor barrier and the water source is addressed. Air leaks are described as one of the biggest drains on comfort and energy use. Insulation like fiberglass doesn't stop air movement, so a continuous air barrier (sealed seams, taped joints, foam-filled gaps) matters more than just piling on insulation. The article also covers water intrusion behind siding, noting that housewrap or felt paper needs to be installed shingle-style, overlapping downward, to shed water properly. One point worth knowing if you've upgraded your furnace: swapping in a high-efficiency, direct-vent model can leave an old atmospherically vented water heater without enough draft to safely vent its exhaust, since it was sized to share a flue with the old furnace. Fixes include a chimney liner or switching to a power-vented water heater. The larger point is that a house works as one connected system, so a change in one place can create a problem somewhere else.
Rain Screen under Exterior Insulation
A homeowner working on an old house asked a building forum a practical question while re-siding: after stripping old siding, installing taped and sealed Zip sheathing (a structural panel that also acts as a water and air barrier), and putting in new windows, does rigid foam insulation added to the outside of the wall need a "rain screen" gap behind it? A rain screen is a small air gap that lets any water that gets behind the siding drain and dry out, instead of sitting against the wall. The answer from another forum member was clear: the gap needs to go on the outside of the foam insulation, not between the sheathing and the foam. Putting the gap on the inside, next to the sheathing, would let air move behind the insulation layer, and that air movement would undercut the foam's ability to keep heat in. The insulation needs solid, uninterrupted contact with the wall to work as intended; the drainage gap belongs between the foam and the siding. This is a good detail to know if you're planning your own re-siding or exterior insulation project on an older home. Getting the layers in the right order (sheathing, foam insulation, rain screen gap, siding) affects both how well the wall insulates and how well it sheds water over time, so it's worth confirming with whoever is planning the work on your house before the insulation goes up.
How wildfire smoke is reshaping childhood
In Montana and across the West, longer wildfire seasons mean more summer days when the air outside is unsafe to breathe. Parents now check the Air Quality Index before letting kids play outside, and pediatricians say they see more asthma attacks and breathing problems during smoke events. The tiny particles in wildfire smoke, known as PM2.5, can reach deep into the lungs and bloodstream, and researchers say repeated exposure may affect brain development, especially in young children. The disruption goes beyond health. Canceled camps, closed playgrounds, and days stuck inside are chipping away at the outdoor play experts say children need for social and emotional growth. Parents interviewed described rearranging work schedules, buying air purifiers and portable AC units, and making daily calculations about whether it's safe to open windows or send kids outside. Schools face similar strain. Older buildings without air conditioning struggle to stay cool when windows must stay shut because of smoke, and constant door traffic lets smoke in no matter how good the ventilation system is. Missoula County schools are part of a "Climate Ready Schools" effort to add better HVAC systems, HEPA air filters, and shaded playgrounds, but officials say making even a few schools smoke- and heat-resilient can cost tens of millions of dollars — money most districts don't have. For now, most families are left managing smoky summers on their own, often with home air purifiers and portable air conditioners as their main line of defense.
Zip installed, exterior insulation next question about a rain screen behind insulation.
A homeowner working on an older house is re-siding it: the old siding came off, new taped-and-sealed Zip sheathing (a structural panel with a built-in weather barrier) and windows are going in, and exterior foam insulation is next. The question was whether a rain screen, a ventilated gap that lets water drain and air dry out the wall, needs to go between the sheathing and the foam. An expert building-science responder said no. A rain screen only works when it sits directly behind the cladding, the actual siding on the outside. Putting one under the foam wouldn't do its job there. He did note that Joe Lstiburek, a well-known building scientist, recommends using a dimpled house wrap between the sheathing and the exterior foam instead. That thin, bumpy wrap creates a small gap that gives the wall a drying path without functioning as a true rain screen. For anyone doing a similar re-side-and-insulate project, the practical point is where the ventilated gap belongs: right behind the final siding, not buried under the foam layer. If a dimpled wrap or similar product goes between the sheathing and foam, it's there to help the wall dry out over time, not to drain bulk water, since that job is handled by whatever gap sits behind the actual siding.
Thinnest way to frame 11 foot tall basement wall
A homeowner posted a question on a building forum asking about the thinnest way to frame an 11-foot-tall basement wall. The goal is to save floor space while still getting at least R-19 insulation, a common target for wall insulation value. This is a homeowner query rather than a news item, and no answers had been posted yet at the time it was captured. So there's no established guidance to pass along here, no product names, no specific stud spacing or framing method, and no cost figures. The question itself points to a real tradeoff anyone doing a basement finish faces: thicker walls insulate more easily but eat into usable square footage, especially in a basement where every inch of floor space matters more than in an open room upstairs. An 11-foot wall is also taller than a standard 8-foot basement ceiling, which limits some framing shortcuts and stock lumber lengths that work fine in a typical basement. If you're planning a similar basement finishing project, the space-versus-insulation tradeoff is worth thinking through before you start buying materials, since the framing choice affects both your usable room dimensions and how well the space holds heat. Beyond that, there isn't a concrete answer yet to report from this discussion.