China's newly installed combined wind and solar power capacity reached a record 125 million kilowatts last year, bringing the tally of total installed capacity to over 1. 2 billion kW, as the country stepped up efforts to ensure energy security while facilitating green. 1. 2 billion megawatts of energy storage could power every Netflix binge, electric vehicle, and smart home appliance on Earth for roughly 47 hours. Hydrogen electrolysers are not included. As of end-September, installed capacity of renewable. Annual additions of energy storage, excluding pumped hydro, reached 112 gigawatts in 2025 – up 48% from 2024 – with 307 gigawatt-hours of batteries added worldwide.