Europe's Solar Sector Stagnates, Eyes Batteries Amid Grid Strain and China Clampdown

Europe's solar power sector is experiencing stagnation, with installations dropping 0.7% in 2025 compared to 2024, and German installations falling 6% in Q1 2026 versus Q1 2025. This follows a decade of rapid growth, but the underdeveloped grid is now a limiting factor. Wholesale electricity prices plunged to negative €500 per megawatt in late April, reflecting an oversupply from uncontrolled solar devices.

SolarPower Europe, the industry association, is now advocating for an alliance with battery producers, promoting "solar plus storage." A report suggests that increasing on-grid battery storage eightfold to 600 GWh by 2030, alongside 600 GW of solar capacity, could reduce Europe's annual energy bill by €53 billion, halve power system operating costs, and cut spot-market electricity prices by 14%.

This comes as the EU implements measures from November 1 to exclude projects using Chinese inverters from EU support, impacting at least a fifth of last year's solar deployment and expected to raise costs. China dominates over 80% of the solar supply chain, leading to a conflict within lobby groups, with some European firms lobbying against Chinese competitors. Additionally, the sector faces domestic challenges, including grid operator blame for blackouts in Spain, opposition from nuclear proponents in France, and subsidy cuts in Germany due to grid overload concerns.