IEA PVPS updates benchmark PV life cycle inventory with 83 factory assessments

A research group that tracks the environmental footprint of solar panels has updated its main reference report, which catalogs the materials, energy, and emissions involved in making, running, and recycling solar panel systems. The update draws on data from 83 factory assessments, mostly collected through a French solar tender program between 2022 and 2025, making the numbers more representative of what is actually being manufactured today.

The update shows that solar panel manufacturing has gotten cleaner in recent years. More silicon scrap from cutting and shaping ingots (the cylindrical blocks of raw silicon used to make solar cells) is now being recycled back into the process. Manufacturers are also using thinner cutting wires, which waste less silicon per panel, and thinner wafers overall. Together, these changes have measurably lowered the environmental impact of both solar panels and inverters, the devices that convert the electricity panels produce into a form usable in your home.

None of this changes anything about installing solar on your own roof right now. But it does mean the panels being manufactured today, using current mainstream technology, carry a smaller environmental footprint than those covered in older reports. If you are weighing a solar installation and care about the manufacturing impact behind the equipment, this is a sign the industry has been tightening up its supply chain and reducing material waste, particularly in the standard crystalline silicon panels that dominate the market.