FCC bans foreign-produced solar inverters, grid lockout begins today

The Federal Communications Commission has banned new sales of solar and battery inverters made outside the United States, effective immediately. An inverter is the equipment that converts power from solar panels or batteries into electricity your home or the grid can use. Any inverter without an existing FCC ID now cannot legally be turned on or connected to the grid. There's no grace period, so this affects new solar and storage projects nationwide right away.

The reasoning is about cybersecurity, not physical tampering. A federal review earlier this year found no hidden malicious hardware in Chinese-made inverters, but the White House decided the real risk is that these devices connect wirelessly, which could let a foreign adversary push a software update that shuts off solar systems remotely. Since domestic manufacturers supply only a small share of the U.S. inverter market, this creates an immediate shortage. Large solar and storage projects already built may sit idle without a certified inverter to connect them, and switching to a different inverter model can also trigger lengthy re-approval delays with utilities.

For a homeowner, this news mainly affects the broader supply chain rather than a system already installed on your roof, since the ban targets new equipment sales and connections going forward. If you're planning a solar or battery installation, it's worth asking your installer whether the inverter they plan to use is domestically made or already has FCC approval, since availability and pricing for imported models may shift as manufacturers adjust.