The five major listed residential players starting 2020 included Sunrun, Sunnova, SunPower, Tesla and Vivint Solar. PV Tech estimates that total PV deployments for these companies reached around 1. 22GW in 2019, a 15% increase year-on-year. Image: Sunnova Recently hailed as an ' historic' year for US solar deployment with the publication of the US Solar Market. The residential solar panel industry focuses on sustainable energy solutions for homeowners, playing a key role in the global shift towards renewable energy. Companies in this sector primarily provide solar panel installation, battery storage options, and energy management systems. The trend is. The largest solar company in the U. is NextEra Energy, with a revenue of $20.