Battery Costs Drop 93% Since 2010, Renewables Now 24/7

For years, fossil fuel supporters had one winning argument: renewables can't keep the lights on when the sun sets or the wind stops blowing. That just changed.

A new report from the International Renewable Energy Agency shows that solar and wind power combined with battery storage can now compete with fossil fuels on both cost and reliability. In many regions, this clean energy mix actually costs less than building new coal or gas plants.

The numbers tell an incredible story. Battery storage costs have crashed 93% since 2010, while solar panels dropped 87% and wind turbines fell 55%. These plummeting prices mean renewable energy paired with batteries now costs between €50 and €75 per megawatt-hour in sunny, windy regions.

Compare that to €60-€75 per megawatt-hour for new coal plants in China and over €88 globally for new gas power. Clean energy isn't just cleaner anymore. It's cheaper.

The technology works by storing electricity during sunny or windy periods and releasing it when demand rises or supply drops. This eliminates the need for backup fossil fuel plants that critics said were essential.

Europe is already seeing real savings. Renewables helped slash electricity prices in some European countries by almost 25% between 2023 and 2025. Consumers in Denmark, Finland, France, Sweden, and Slovakia could save up to €8.5 billion on energy bills this year thanks to their cleaner electricity.

Solar power alone saved Europe €3 billion in March by reducing gas imports. If gas prices stay high, total savings could hit €67 billion.

The Ripple Effect

The timing matters more than ever. Europe still faces energy price shocks from conflicts in Ukraine and the Middle East that disrupt fossil fuel supplies. Battery-powered renewable systems offer protection from these geopolitical storms.

By 2035, some large solar-and-battery projects could deliver continuous electricity for under €45 per megawatt-hour in the best regions. That's good news for energy-hungry industries like artificial intelligence and data centers looking for reliable, affordable power.

Francesco La Camera, director general of IRENA, put it simply: "The long-standing argument that renewables lack reliability no longer holds."

The energy debate just shifted from "Can renewables work?" to "How fast can we build them?"