Renewable energy sources generated more electricity than natural gas in the United States for the first time last month, marking a significant milestone in the transition to clean energy.
According to data from Ember, renewables including solar, wind, hydropower and bioenergy became the largest source of US electricity in March. Combined with nuclear power, they supplied more than half of total generation.
The milestone reflects rapid growth in wind and solar capacity alongside a seasonal drop in electricity demand. Milder spring weather typically reduces the need for heating and cooling, allowing fossil fuel generation to scale back.
As a result, fossil fuels produced less electricity than in any March for at least 25 years, while renewable generation reached a record high.
Despite this progress, rising electricity demand is complicating the transition. Solar, wind and batteries are expected to account for 93% of new power capacity added this year, according to the Energy Information Administration.
However, increasing demand from sectors such as data centres is sustaining the role of fossil fuels. Some technology companies are installing natural gas generators, while grid operators are delaying the closure of coal plants.
Nine coal plants scheduled for retirement last year have had their lifespans extended, including five under emergency orders. Meanwhile, only four coal plants retired capacity, marking the lowest level of coal phase-out in 15 years.
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