US power producers are relying more on natural gas even as renewable energy grows rapidly.
While renewables have steadily increased their share in the power mix, leading to less coal use and lower emissions, their variable nature means power companies often need to use more natural gas when renewable energy is low.
According to LSEG data, power generation from U.S. wind farms fell by 78% from July 1 to July 23, from 57,274 megawatt hours (MWh) to 12,608 MWh.
In 2023, natural gas provided over 42% of U.S. electricity, making it the largest single power source. In comparison, wind and solar sources combined supplied 15.61%, coal plants 16%, nuclear plants 18.25%, and hydro dams around 6%, according to energy think tank Ember.
Wind power often drops in the summer due to lower wind speeds, and on July 23, it hit its lowest level for that date in over three years.
To compensate for this drop in clean energy, power companies increased natural gas generation by 27%, from 217,617 MWh on July 1 to 276,453 MWh on July 23, according to LSEG.
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This rise in gas-fired generation boosted its share of the U.S. power mix to 46.3% for July, up from 40% in the first half of 2024.
The increased use of natural gas also contributed to a 3.4% rise in total power generation from July 1 to July 23, ensuring that the national power system could meet higher demand.