Germany has cemented its position as a global leader in renewable energy, with wind and solar accounting for nearly 45% of its electricity generation in 2025, according to energy think tank Ember. Yet German households pay around €0.39 per kilowatt-hour (kWh) — roughly a third more than the EU average of €0.29/kWh, data from Eurostat and energy firm 1KOMMA5° show. Only Ireland, at €0.40/kWh, has higher prices.
The paradox stems from a structural flaw in Europe's electricity market: the merit order principle, which sets the price of power based on the most expensive plant still needed to meet demand. Even when cheap renewables flood the grid, if fossil-fuel plants are required to fill gaps, their high costs set the market price for all electricity. As a result, Germany's rapid expansion of clean energy has not translated into lower bills for consumers.
Why Germany's grid struggles to absorb its own green power
Germany's renewable energy law (Erneuerbare-Energien-Gesetz), introduced in 2000, has driven a dramatic shift: wind and solar rose from less than 2% of generation to nearly 45% last year, while coal fell from over half to just 21%. However, the country's grid was built for centralized power plants, not the decentralized, often remote locations of wind farms and solar arrays. On sunny, windy days, supply can outstrip demand, forcing grid operators to pay producers to shut down — a practice called curtailment. In 2025, Germany spent €435 billion on such compensation and balancing payments, according to 1KOMMA5°.
“Germany does not have too much cheap wind and solar power, but too little flexibility in the system,” said Jannik Schall, co-founder of 1KOMMA5°. This inflexibility leads to negative electricity prices during oversupply, wasting clean energy that could otherwise lower costs.
Battery energy storage systems (BESS) are widely seen as a solution. They can absorb excess power and release it when demand peaks, reducing reliance on fossil backup. The EU's battery fleet has grown tenfold since 2021 to over 77 GWh, but a 2026 Solar Power Europe report warns that the bloc must repeat that growth to reach 750 GWh by 2030. Germany, along with four other EU markets, accounted for more than 60% of new BESS capacity in 2025, but deployment remains far behind what is needed.
Spain offers a contrasting example. With a similar share of wind and solar, Spain's overall clean energy mix — including hydropower and nuclear — reached 75% in 2025, versus Germany's 59%. This has reduced the influence of fossil fuels on Spanish electricity prices by 75% since 2019, according to Ember. Germany's nuclear phaseout, completed in 2023, removed a source of firm, low-carbon power that had supplied 6.6% of its electricity in 2022, creating a gap that renewables have only partially filled.
“Removing that source of firm, low-carbon power created a sizable gap that needed to be filled quickly, either by fossil generation or by accelerating renewables,” notes Montel's Clean Power Progress report. Experts expect Germany's renewed momentum to become clearer in 2026 as fossil displacement continues to compete with demand.
The broader lesson for Europe is that simply adding renewables is not enough. Without grid modernization, storage, and market reform, countries risk perpetuating high prices even as they lead the green transition. As the EU pushes toward its 2030 climate targets, the German experience underscores the need for a holistic approach — one that couples renewable generation with the infrastructure to deliver it affordably.
