In response to the new US climate law, First Solar will invest up to $1.2bn to increase production of American-made modules for the domestic market by 4.4GW on a direct current basis by 2025.

The investment includes $1bn to build a new 3.5GW vertically integrated manufacturing facility in the US southeast, the Arizona company’s fourth in the region, and at least $185m to expand its existing Ohio footprint by 960MW.

When they are fully online, the nation’s largest solar manufacturer will have capacity to produce more than 10GW of modules at home for American projects.