In Q4 2024, First Solar Inc (FSLR) reported net sales of $1.5 billion, marking a significant increase of 70.56% quarter-on-quarter and a 30.68% rise year-on-year. The company's full-year net sales reached $4.2 billion, reflecting a 27% annual growth, driven by robust module sales of 14.1 gigawatts. The earnings call highlighted key fluctuations influenced by warranty charges related to Series 7 module manufacturing issues, which recognized a total expense range of $56 million to $100 million. Despite these challenges, the company ended the year with a substantial contracted backlog of 68.5 gigawatts and a strategic focus on optimizing domestic manufacturing capabilities, positioning itself well in a transitional energy market with increasing electricity demands. Investors are advised to monitor First Solar's capacity expansions and the evolving policy landscape affecting the solar industry.