European mid-cap solar developers have until 1 November 2026 to rip out their Huawei and Sungrow inverters — or lose their EU grant.
From 1 April 2026, the European Commission cut EU funding for any new solar or battery project larger than 100 kWp (kilowatts-peak, the standard size unit for a solar array) that uses inverters from a high-risk country: China, Russia, Iran, or North Korea. On 4 May 2026 the same rule was extended to battery-storage power-conversion systems. Together Huawei and Sungrow hold about 80% of the EU inverter market and sit inside roughly 200 GW of installed European PV. Mid-cap project developers must report what kit is installed by 1 May 2026 and decide whether to swap by 1 November 2026.
01The pain
Huawei and Sungrow inverters sit inside roughly 200 gigawatts of installed European solar capacity. From 1 April 2026 the European Commission cut EU funding for any new solar or battery project above 100 kWp (kilowatts-peak, the standard solar-array size unit) that uses inverters from a high-risk country: China, Russia, Iran, or North Korea.1 On 4 May 2026 the same rule was extended to battery-storage PCS (the power-conversion system, which is the inverter for a battery).2
A mid-sized European developer now has three things to do. Report which kit is installed by 1 May 2026. Decide by 1 November 2026 whether to swap. And accept that the European Investment Bank (the EU's public-investment bank) and national funding bodies are combing their pipelines for non-compliant assets.3 Huawei and Sungrow together hold about 80% of the EU inverter market.4 SolarPower Europe (the EU solar industry's trade body) modelled that 3 GW of compromised inverter capacity is enough to destabilise the grid; undocumented radio modules turned up in shipped units sharpened the case.5
The pain lands hardest on mid-cap developers who picked the cheap kit in 2022-2024 and now must find a European-made replacement, eat the swap cost, or watch the grant fall away. The BSI (Bundesamt für Sicherheit in der Informationstechnik, Germany's federal cybersecurity authority) gets named again and again on the Photovoltaikforum — for moving too slowly, then moving all at once.
Further reading
- 1 pv-magazine.de — "EU-Kommission will chinesische Wechselrichter aus EU-geförderten Projekten drängen" (23 April 2026): German trade-press coverage of the European Commission decision to block EU funding for projects above 100 kWp using high-risk-country inverters (German): pv-magazine.de
- 2 pv-magazine.com — "EU funding ban on high-risk inverters, including Chinese suppliers, extends to BESS" (4 May 2026): English trade-press write-up of the extension of the funding ban to battery-storage power-conversion systems: pv-magazine.com
- 3 handelsblatt.com — "EU-Förderung für Wechselrichter aus China gestoppt: Angst vor Blackout" (article 100222173): Handelsblatt feature on the policy rationale and the European Investment Bank's role in screening pipelines (German): handelsblatt.com
- 4 agrarheute.com — "EU-Förderstopp für Wechselrichter aus China: Experte erklärt, was Betreiber jetzt tun müssen" (article 640537): German agri-business trade-press explainer on the market-share figures and what farm-PV operators have to do (German): agrarheute.com
- 5 ess-news.com — "EU funding ban on high-risk inverters, including Chinese suppliers, extends to BESS PCS" (4 May 2026): battery-industry trade-press analysis citing SolarPower Europe's 3 GW destabilisation modelling: ess-news.com
02Who solves this today
Five European-domiciled inverter and power-conversion-system makers that publicly market themselves to the exact buyers the funding ban now forces into a swap — string and central solar inverters above 100 kWp, battery-storage PCS, turnkey utility-scale stations, and the certification trail that goes with them. Each homepage was checked live on the date of writing. The list is intentionally narrow.
Adjacent vendors were considered. Huawei FusionSolar and Sungrow are the named high-risk brands the EU rule targets and are excluded by definition. Sungrow Europe's EU-cert variant was checked; as of the date of writing the homepage does not self-market a stand-alone EU-cert replacement product, so it is not catalogued here. Cybersecurity audit and certification houses (TÜV SÜD, TÜV Rheinland, BSI Group) sit adjacent to the swap problem but are tested-and-certify generalists rather than solar-specific solutions, and are referenced in section 01 as the surrounding certification ecosystem. The European Investment Bank, SolarPower Europe and the BSI (Bundesamt für Sicherheit in der Informationstechnik) are public-sector or trade-body actors and are referenced in section 01 in their respective capacities, not as third-party solution providers.
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Operators discussing this
These are real European solar and battery operators talking about this pain in their own words on the Photovoltaikforum, Germany's largest PV operator board. They are the reason this page exists.
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«gerade scheint das BSI und womöglich bald auch die Politik die Erkenntnis zu bekommen, dass es bei 37GW nomineller Spitzenleistung von kleinen PV-Anlagen <30kWp in Deutschland riskant sein könnte, wenn diese ferngesteuert über die Cloud böswillig manipuliert werden können. […] Verkaufsverbote für neue Wechselrichter/Batteriespeicher ohne zertifizierte Firmware […] Womöglich Restriktionen auf Produkte aus Fernost.»
"It now looks like the BSI — and soon politicians too — are starting to realise that with 37 GW of nominal peak capacity from small PV plants under 30 kWp in Germany it could be risky if these can be maliciously manipulated remotely via the cloud. […] Sales bans on new inverters and battery storage without certified firmware […] Possibly restrictions on products from the Far East."
Stromnetzrisiken durch Wechselrichter und Batteriespeicher in der Cloud · Photovoltaikforum — opened 19 January 2025; 6+ distinct posters (Neron, TheownLand, AusmWW, MikeAlphaFox, Janne161, Eisenmann M); active posts on 11 September 2025, 22 September 2025, 24 September 2025 and 31 December 2025 — a multi-month arc with fresh activity within the last 365 days.
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«auch wenn es eher größere WR betrifft … aber gilt das auch für die kleinen bei uns zu hause, Sungrow & Co., die alle irgendwie unter "beobachtung" von wem auch immer stehen — könnte man die alle gleichzeitig mit einem befehl runterfahren und sowas auslösen? derzeit ist ganz Deutschland im sonnenschein.»
"Even though it mostly concerns the larger inverters … but does it also apply to the small ones we have at home — Sungrow & co. — which are all somehow under 'observation' by whoever it is? Could they all be shut down at the same time with one command, triggering something like that? Right now the whole of Germany is in sunshine."
Warum chinesische Wechselrichter eine Gefahr sein können · Photovoltaikforum — opened 30 April 2025 on the dedicated Wechselrichter board; 3 distinct operator-flagged posters on the first page (Eisenmann M, AusmWW, MikeAlphaFox).