US bans foreign-produced solar inverters

In the United States, the Federal Communications Commission Public Safety and Homeland Security Bureau has added foreign-produced power inverters to its Covered List, executing an immediate ban on equipment authorizations for unapproved foreign models over national security and hacking concerns. The Federal Communications Commission Public Safety and Homeland Security Bureau added foreign-produced power inverters to its Covered List, triggering an immediate and absolute ban on new equipment sales in the United States. This means any solar or battery storage project relying on an inverter made outside the United States that has not already received an official FCC ID cannot legally turn on or interconnect. Because there is no phase-in period, grandfather clause, or grace window, the regulatory pipeline is frozen today, forcing developers to halt active procurements and find new hardware vendors. Crucially, this applies strictly to new inverter model filings rather than an absolute freeze on all foreign-built components. However, the restrictions apply strictly to prospective authorizations for new device models; existing inverter models already approved through the FCC process remain unaffected and eligible for continued import, sale, and installation. Because the vast majority of near-term utility and commercial projects rely on hardware models that hold pre-existing FCC equipment authorizations, most active builds will experience little immediate operational disruption. The action effectively overrides the Department of Energy analysis from January 2026, which inspected 30 Chinese inverters and found zero evidence of malicious hardware. The White House interagency council determined that physical bugs do not matter because the risk is purely digital. The administration ruled that the wireless connectivity inherent in modern smart inverters allows foreign adversaries to push firmware updates that could shut down solar arrays remotely, making all foreign-assembled units an unacceptable threat to the critical power grid. However, the regulatory definition focuses specifically on networked equipment; hardwired or fully air-gapped field inverters that lack remote communication capabilities fall outside the scope of the Covered List determination. The immediate practical result is a massive equipment shortage that will delay upcoming commercial and utility projects. Department of Energy data shows that domestic manufacturers supply only seven percent of the U.S. solar inverter market, leaving a 93% deficit that cannot be filled by local factories anytime soon. This impact will primarily materialize down the line as manufacturers introduce new product refreshes or next-generation hardware designs that require fresh FCC grants. The hardware blockade hits right as developers plan to connect more than 58,000 MW of new solar and storage over the next year. Without certified inverters, fully built solar farms will sit dark and unable to feed electricity to the grid. For asset managers and engineering contractors, switching to a domestic vendor triggers a dangerous regulatory loop with grid operators. Interconnection agreements are tied to the exact engineering specifications of a specific inverter model number. Swapping out a banned foreign inverter for a compliant domestic model constitutes a Material Modification under standard utility rules, which forces the project to the back of the line for a mandatory engineering re-study. The ban targets where the physical hardware is bolted together, not who owns the brand name. The determination covers inverters produced in any foreign country, regardless of manufacturer nationality. The FCC is using the federal Buy American Standard definition of a domestic end product to enforce the restriction. This means an inverter from an American company manufactured in an overseas facility is completely banned. Conversely, a foreign-owned manufacturer executing final assembly inside a U.S. factory can still clear equipment authorization, provided the local manufacturing process satisfies the federal component value thresholds. Messaging from the White House explicitly tied this action to the national race for artificial intelligence supremacy. According to America’s AI Action Plan, the massive scale of next-generation data centers is creating an unprecedented spike in power demand. Tech companies have been counting on rapid solar and battery storage rollouts to keep these data centers online without crashing local civilian grids. By cutting off the supply of core power electronics needed to connect these clean energy projects, this rule risks creating an immediate electricity shortage that threatens U.S. computing competitiveness. The only way for a foreign-produced inverter to bypass this block is through an emergency Conditional Approval process managed by the Department of Defense or the Department of Homeland Security. Under this pathway, foreign-produced models may receive conditional authorization if DHS or the Department of War formally determines that the device or class of devices does not pose unacceptable risks. As outlined in Annex A, this pathway serves as an intentional regulatory bridge, granting conditional grants to foreign suppliers who commit to a binding, time-bound plan to shift assembly to U.S. manufacturing facilities. To comply, manufacturers must open up their entire supply chain and firmware architecture to federal auditors to prove their code cannot be manipulated remotely before the FCC will unlock their equipment applications. Editor’s Note (July 29, 2026): Regulatory guidance and industry contacts have since clarified that the FCC restrictions apply exclusively to prospective authorizations for new device models, leaving previously approved foreign-produced inverters eligible for continued import and sale while establishing a conditional approval pathway for future hardware through DHS or DoD. Further review of the FCC Covered List determination and accompanying interagency guidance clarifies that the restriction specifically targets networked power inverters with remote communications, data transmission, or firmware update capabilities. Equipment lacking remote control features—or utilizing air-gapped external control architecture—remains outside the security determination. Additionally, while the rule blocks new equipment authorizations going forward, Annex A establishes an explicit Conditional Approval mechanism managed through the Department of Homeland Security (DHS) and Department of Defense(DoD), offering foreign manufacturers a conditional waiver pathway if they undergo supply chain audits and submit a binding timeline to transition assembly to domestic U.S. facilities.