Musk's 100 GW US solar plan would more than double the entire domestic factory base
Elon Musk said SpaceX and Tesla teams were separately working to stand up 100 GW a year of US solar manufacturing capacity, a job he put at roughly three years, according to pv magazine. The target alone would eclipse every existing solar module line in the country.
Intertek CEA estimated US module manufacturing capacity at slightly above 45 GW at the close of 2025, rising toward 60 GW this year. A single 100 GW Musk complex would therefore outweigh the whole domestic industry then in place.
China's plants ran on another scale entirely. The IEA put Chinese annual module manufacturing capacity at 1,156 GW at the end of 2024, with actual output of 627 GW that year, pv magazine reported.
The US demand case ran high. A 2025 American Clean Power Association study projected the country would need more than 900 GW of new renewable generation capacity by 2040 to cover rising load from data centers and the electrification of heating and transport, with solar carrying 647 GW of that over a 15-year stretch.
The equipment alone carries a heavy bill. Open EI's 2025 Benchmarks pegged tooling for 100 GW of tunnel oxide passivated contact (TOPCon) cell production at USD 3.5 billion from the cheapest Chinese suppliers, with another USD 1.3 billion required for module production gear at the same scale, pv magazine reported.
Those costs cover machinery only. They leave out buildings, land, labour, polysilicon and wafer feedstock, and the tariff burden on Chinese-sourced equipment shipped into the United States. Neither SpaceX nor Tesla had named sites, financing, or cell technology for the proposed platform.
Source: pv-magazine.com (opens in a new tab)1 sourcePermalink