First Solar, Inc is a provider of photovoltaic (PV) solar energy solutions. The Company designs, manufactures and sells PV solar modules with a thin-film semiconductor technology. The Company also develops, designs, constructs and sells PV solar power systems that primarily use the modules it manufactures and provide operations and maintenance (O&M) services to system owners. It operates through two segments: modules and systems. The modules segment is involved in the design, manufacture, and sale of CdTe solar modules, which convert sunlight into electricity. The systems segment provides power plant solutions in certain markets, which include project development, engineering, procurement, and construction (EPC) services, and O&M services. Its customers include utilities, independent power producers, commercial and industrial companies, and other system owners.