Executive order bans foreign-produced transformers, inverters, and circuit breakers for U.S. power grid

President Trump has signed an executive order restricting foreign-made equipment in the large-scale power grid, the system of high-voltage lines and substations that moves electricity across the country. The order targets gear tied to suppliers in 24 countries under U.S. arms-control sanctions, including Iran, Russia, and Syria. China is the biggest commercial supplier affected, since it makes much of the solar, battery, and electrical equipment covered.

The rule covers big equipment like substation transformers, high-voltage circuit breakers, utility-scale batteries and inverters, and the control systems that run power plants and transmission lines rated 69 kV or higher. It does not apply to home or business solar panels, batteries, or other equipment connected only to your local, low-voltage power lines. So this order does not directly change what you can install on your own house.

The order technically covers deals made after August 26, 2026, but nothing is formally banned yet. The Department of Energy has until December 24, 2026, to write the actual rules, including reviewing specific vendors and deciding which equipment counts as a security risk. The agency could set up an approved-vendor list or a licensing system for utilities, and it may eventually require utilities to isolate, monitor, or replace equipment already installed. Any such requirement would likely be rolled out gradually to avoid disrupting the grid. For homeowners, this is a utility-scale infrastructure policy to watch rather than something that changes your own equipment choices right now.