Space Exploration Technologies Corp. (NASDAQ:SPCX) and Tesla Inc. (NASDAQ:TSLA) CEO Elon Musk says fossil fuels are necessary to act as a bridge to close the gap between solar energy at its current levels and where it could be in the future.

Turbine Blades and Vanes Are the Limiting Factor

Responding to influencer Alexandra Merz, who shared a link to an article that said SpaceX was laying the groundwork for manufacturing turbines that will help address data center power needs. “SpaceX and Tesla are each building 100GW/year of solar production capacity as fast as possible,” Musk said on X on Sunday.

However, the billionaire acknowledged that “natural gas will still be needed to supplement and bootstrap solar for several years.” Musk then shared that the “limiting factor” for the natural gas turbine production was “casting the blades & vanes.”

He then said that “in-house casting at SpaceX” would “accelerate” natural gas turbines “coming online by up to 18 months, which is a profound game-changer.”