German Green Power Startups Quit the Market as Wholesale Prices Soar

Two young green energy retailers are pulling out of Germany's household market, leaving roughly 300,000 customers to find a new supplier before the end of October 2026. Grüüün, the consumer brand of renewable energy developer Münch Energie, and Berlin-based Stromee, owned by smart-home company homee GmbH, will both stop supplying private households on October 31, 2026. The exits come as wholesale gas and power prices climb to multi-year highs and as Berlin prepares a major overhaul of its renewable energy rules, reviving memories of the 2022 energy crisis when many small suppliers were forced out of business.

Grüüün was one of the fastest growing newcomers in the German retail market. Launched in 2024 by Münch Energie, a solar, wind and battery storage developer based in Rugendorf in Upper Franconia, Bavaria, the brand sold green electricity sourced mainly from the parent company's own solar and wind parks, without intermediaries. Its main selling point was a fixed energy price guaranteed for up to ten years, with only network fees, taxes and levies able to change. At the end of June 2026 the company reported around 200,000 customers and said it expected further growth. Regional media estimated its annual revenue in the hundreds of millions of euros.

On October 8, 2026, Grüüün started informing customers by email and on its website that it was giving up its nationwide offer for consumers at the end of the month, which left households only about three weeks to react. The company has not filed for insolvency. It said credit balances will be refunded with the final bill in November and asked customers to send their meter reading on October 31. Grüüün recommended Naturwerke, a supplier belonging to the CHECK24 group, which is offering former Grüüün customers a promotional rate until October 21.

Grüüün placed the blame on federal energy policy rather than on its own finances. The company pointed to the planned reform of the Renewable Energy Sources Act, known as EEG 2027, the accompanying grid package, the government's focus on new gas-fired power plants and rising grid charges, arguing that these changes broke its long-term pricing model. According to Grüüün, the new framework means that part of the green electricity it had planned to sell will never be produced, so its national consumer offer can no longer be maintained. Because existing installations keep their current support, industry observers suspect the ten-year price promises relied heavily on a large pipeline of new solar and wind projects.

The German cabinet approved the draft EEG 2027 and the grid package on July 29, 2026. The reform replaces the current support model with two-sided contracts for difference from 2027, phases out the fixed feed-in tariff for new small rooftop solar systems after a transition period and limits the share of output that wind farms in congested grid areas can be forced to curtail without compensation. Economy Minister Katherina Reiche called the reform a paradigm shift and said consumers should see lower electricity prices in the medium term, but not in the short term. Both laws still need approval from the Bundestag, and the EEG changes also require clearance from the European Commission under state aid rules.

Stromee, a Berlin startup launched in 2022 by smart-home specialist homee, followed a similar path. Customers began receiving letters in the second half of September saying that power and gas deliveries could probably no longer be guaranteed from November, and the company is ending its household electricity and gas business on October 31. SWK Energie, a subsidiary of the municipal utility Stadtwerke Krefeld in western Germany, said it has taken over Stromee power and gas customers in the low five-digit range through an asset deal. Consumer advocates have received complaints about the way customers were steered toward SWK, with one household reporting that the new offer was 23% more expensive for electricity and 46% more expensive for gas. Like Grüüün, Stromee has not filed for insolvency.

The market backdrop has turned hostile for small retailers. European gas prices rose sharply after the war in the Middle East broke out at the end of February 2026 and disrupted tanker traffic through the Strait of Hormuz, a route for about one fifth of the world's liquefied natural gas. The Dutch TTF benchmark, which traded near 32 euros per megawatt-hour in February, climbed above 86 euros per megawatt-hour on October 13, its highest level since December 2022.

Since gas-fired plants usually set the marginal price on the German power exchange, electricity prices followed. The German day-ahead price averaged 201.70 euros per megawatt-hour on October 6, and the quarter hour starting at 18:45 (Berlin time) reached 406 euros per megawatt-hour. The weekly average from September 28 to October 4 stood at 176.42 euros per megawatt-hour, compared with an average of 102.17 euros per megawatt-hour over the first quarter of 2026. On the forward market, German baseload power for delivery in 2027 closed at 140.21 euros per megawatt-hour on October 9, its highest close of the year. Prices remain volatile, falling sharply on windy days before jumping again when wind output drops.

Higher purchase costs are now feeding into retail tariffs. The cheapest electricity offers for new household customers rose from about 23.84 euro cents per kilowatt-hour in January 2026 to around 29.86 cents by mid-October, while local default supply tariffs average about 40.37 cents. Retailers that locked customers into long fixed-price contracts are the most exposed when their procurement costs jump in this way.

Supply security for the winter adds to the pressure. On October 15 Germany's gas storage sites were only 60% full, well below the EU average of 74%, and EU storage levels are at their lowest since at least 2011. Major gas importer VNG has said that Germany does not face a supply shortage thanks to its diversified import routes, but a colder than usual winter could push gas and power prices even higher.

Affected households will not lose power. Customers who have not signed a new contract by October 31 will automatically be supplied by their local default provider from November 1. Default supply is more expensive, with Grüüün itself estimating a premium of 10% to 20% over regular tariffs, but it can be cancelled with two weeks' notice. Stadtwerke Dessau confirmed on October 14 that former Grüüün and Stromee customers in its area will be supplied without interruption.

Consumer groups are questioning the legality of the terminations. On October 15 the consumer advice centre in Berlin said there are serious doubts that the reasons given by Grüüün can justify ending running contracts early, and it advised customers to object in writing and keep records of any extra costs, which could support compensation claims. As of mid-October, no class action against Grüüün or Münch Energie had been publicly confirmed.

The two exits are the first visible casualties of the 2026 price surge in the German retail power market. With the October 31 deadline approaching, gas storage below average and the Hormuz situation still uncertain, other small suppliers with thin margins and long fixed-price commitments could come under similar strain if wholesale prices stay high through the winter.