U.S. Moves to Ban Chinese Inverters; Sungrow Warns Supply Chain Rebuild Could Take Five Years
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The US is drafting a ban on Chinese-made inverters, with rules possible by year-end; Sungrow (阳光电源) warns rebuilding a domestic supply chain would take at least five years, while US-brand market share sits at roughly 10% — the gap between the ban and actual replacement capacity is the policy's biggest unknown.
What is an inverter, and why ban it?
An inverter — the device that converts raw DC power from solar panels or wind turbines into grid-ready AC electricity — is the core component of any renewable-energy system.
According to a Wood Mackenzie report this year, six of the world's top ten inverter suppliers are Chinese. Sungrow and Huawei rank first and second.
This means → US solar and wind projects are deeply dependent on Chinese suppliers, and the proposed ban targets exactly that chokepoint.
Can US domestic capacity fill the gap?
At a Wednesday investor event, Sungrow offered a key figure: China spent roughly twenty years building its inverter supply chain. A US rebuild would need at least five.
US domestic brands currently hold only about 10% market share. Sungrow stated bluntly that "a complete supply chain cannot be built overnight."
In plain terms = a ban can be signed in a day, but factories, skilled workers, and upstream component networks do not appear on command — the window in between is paid for in higher electricity costs and delayed projects.
When does the draft land, and has Europe already moved?
Reuters reports the US draft could come as early as year-end, aimed squarely at Chinese-made inverter products.
The EU has already acted: earlier this year it barred inverters from "high-risk" suppliers in EU-funded projects.
This reflects a broader shift across the US, EU, and China — from cooperating to cut clean-energy costs toward decoupling supply chains. Inverters are simply the latest piece.
How is Sungrow responding?
Sungrow pledged to strictly comply with local laws and said it would counter trade barriers through "product competitiveness and customer trust."
This means → in the near term, Sungrow is likely to accelerate offshore localization — setting up plants in Southeast Asia, for instance — to ship under a "not made in China" label.
The core variable has not changed: whether the US can complete its supply-chain switch before the ban takes effect — if it cannot, the choice is either to delay the ban or to accept stalled power projects.
Content is for reference only, not financial advice.