PJM’s big experiment is about to begin

PJM, the grid operator serving a large swath of the mid-Atlantic and Midwest, has laid out a plan for handling the huge growth in power demand expected from data centers by 2038. PJM will spend up to $20 billion to line up new power supply, matching data centers directly with new power plants where possible, then holding a one-time auction to fill any remaining gap. Data centers that don't arrange their own power will instead have to cut their electricity use during times of grid stress, starting in 2027. PJM will also start tracking large power users (sites over 50 megawatts) in a new registry.

For homeowners, the immediate effect isn't a specific bill or program, but it does touch what you pay for electricity if you live in PJM's territory, which spans much of the mid-Atlantic and parts of the Midwest. Under the plan, the wholesale costs of this new power supply get passed down to local utilities, and it will be up to state regulators to decide whether those costs land on the data centers themselves or get spread across all ratepayers, including households. Experts quoted in coverage of the plan are split on whether this will actually lower electricity prices, with some estimating it could take three to five years to see any real effect, if it works at all.

There's no direct action for homeowners here. But if you're in PJM territory and concerned about rising electricity costs, it's worth keeping an eye on how your state's utility regulators handle this cost-allocation decision, since that's where the choice about who pays gets made.