Electricity supply is increasingly outpacing demand in Europe as renewable energy capacity grows, making negative prices a more frequent occurrence. In early 2020, Spain’s installed solar power capacity totaled nearly 9 gigawatts, according to data from Red Eléctrica. In early 2025, it had soared to 32 GW, helped by subsidies. With solar panels and wind turbines installed in more places—while energy storage capacity is still lagging—an especiall…
Sometimes electricity isn't just free; you even get paid for using it. But the taxpayer foots the bill, which runs into billions, warns RWI economist Manuel Frondel.