European electricity prices are experiencing extreme volatility as the Iran war disrupts gas supplies and accelerates the impact of renewable energy on power markets. Wholesale prices in markets like the Netherlands, Denmark and Germany are fluctuating by hundreds of euros per megawatt hour within hours, with prices swinging from €26 to €430 in Denmark on March 4 alone.

This volatility stems from the rapid growth of solar power, which produces abundant electricity during the day but leaves gas-fired plants to meet evening demand at higher prices. The EU had 406 gigawatts of solar capacity installed by the end of last year, with solar becoming the largest electricity source in the bloc last June. However, the lack of adequate battery storage means most daytime solar power cannot be saved for evening use.

The current price swings have been intensified by Middle East tensions, with gas prices surging after Qatar halted production following attacks on its infrastructure and the Strait of Hormuz becoming nearly impassable. This has also pushed up coal prices as utilities seek alternatives to gas. The volatility creates opportunities for owners of flexible assets like batteries, while highlighting the urgent need for energy storage solutions as Europe's power grid transitions to renewable sources.