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Global solar power output has reached a record high, supported by battery storage technology that helps make clean electricity available beyond daylight and supports the growth in global electricity demand.
In its Global Electricity Review published April 21, Ember said the world has entered a “green growth era,” with renewables accounting for 34% of the power mix. Ember reported that this is the first time solar and wind combined have exceeded coal-fired generation. The review is the organization’s seventh annual report, based on data from 215 countries.
Ember’s report shows solar power growing 30%, adding 636 TWh. More than half of this additional solar generation comes from China. The report also states that battery storage (BESS) has been a key technology behind the rapid rise in solar by making solar power usable at any time rather than only during daylight hours.
Alongside wind and nuclear, renewables reached 887 TWh. Ember said this surpassed the total incremental electricity demand of 849 TWh. Solar accounted for three-quarters of this increase.
Ember also reported that last year the world installed storage capable of storing 14% of the added solar output. It attributed the expansion to costs that have nearly halved. In Chile and Australia, storage shares were 76% and 53%, respectively, reflecting the larger role of solar in those markets.
With record growth in clean power, demand for coal electricity fell by 38 TWh, about 0.2%. Ember said this is the first decline since 2020. Coal’s share last year was 33%, lower than the 34% contributed by renewables to global supply.
Ember said the clean-energy shift is led by China and India. Over the past two decades, the two countries have used fossil fuels the most globally, but in 2025 both saw a sharp rise in clean energy that outpaced growth in electricity demand.
In a report cited by the South China Morning Post, the data were framed as evidence that clean energy can help countries reduce dependence on fossil fuels to improve energy security amid Middle East tensions.

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