17:12 2 May 2026
Storage key to harnessing RES potential
Energy storage is becoming essential as renewable power grows faster than grids can absorb it. In 2024, renewables reached 32% of the global power mix and 47.3% in the EU, but outdated grids and connection delays mean large amounts of clean energy are wasted. In Poland, 787.5 GWh of renewable power was curtailed in the first half of 2025.
Battery energy storage systems are emerging as a key solution, helped by a 93% drop in lithium-ion battery costs since 2010. They allow surplus solar and wind power to be stored and used later, improving grid stability and profitability. New technologies, including liquid air storage, may reduce costs further.
Storage is also becoming a new investment asset, with revenue from capacity payments, grid services, and power price arbitrage. Europe is expanding quickly, but still needs stronger regulation, investment, and battery independence from China.
