SpaceX said this week that it will build natural gas power plants to supply electricity to the Terafab semiconductor factory it plans to build in Texas, according to a report from Bloomberg. Notably absent from the Bloomberg report — and other SpaceX announcements related to Terafab — is any mention of terrestrial solar power for the facility. Despite his investments in solar power, SpaceX and Tesla’s CEO Elon Musk has bet heavily on natural gas lately. The AI data center boom has driven a surge in proposals for new natural gas power plants across the industry, which has in turn driven up costs for natural gas power plants by 66%. Such schemes are intended to speed up project development while addressing concerns about rising electricity prices for consumers, but natural gas turbines can release significant amounts of pollution.