EXHIBIT 99.1 News Release First Solar, Inc. Announces Second Quarter 2025 Financial Results and Updates Guidance TEMPE, Arizona, July 31, 2025 – First Solar, Inc. (Nasdaq: FSLR) (the "Company") today announced financial results for the second quarter ended June 30, 2025, and updated its 2025 guidance. Net sales for the second quarter were $1.1 billion, an increase of$0.3 billion from the prior quarter. The increase in net sales was primarily due to an increase in the volume of modules sold to third parties ...