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The Guardian - US
The Guardian - US
Business
Guardian staff and agencies

Constellation Energy to buy Calpine for $16bn in one of biggest US power moves

Exterior of power plant with two large towers
Cooling towers are seen at the Three Mile Island nuclear power plant in Middletown, Pennsylvania, on 16 October 2024. Photograph: Shannon Stapleton/Reuters

The US nuclear power giant Constellation Energy has agreed to buy the natural gas and geothermal firm Calpine Corporation for $16.4bn, one of the biggest takeovers in the US power industry.

The acquisition would combine two of the biggest electricity generators in the US into the largest independent power provider in the country, with some 2.5 million customers.

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