OneSun

OneSun LLC is a solar panel installation company that provides cost-effective and high-quality solar energy and storage solutions for residential and commercial customers throughout Southern California. The company’s service areas include Los Angeles, Orange, Riverside, San Bernardino, and Ventura counties. Motivated by sustainability and a desire to make solar affordable and accessible, OneSun emphasizes an educational, transparent, and streamlined process to ensure a low-stress customer experience. They commit to exemplary workmanship, fully backing their projects with a 25-Year Warranty, and use high-performance equipment from trusted manufacturers such as Canadian Solar, Enphase Energy, and Panasonic.

The company guides customers through an end-to-end solar project, which includes consultation, site survey, handling of permits and approvals, installation (often completed in a single day for residential systems), final inspection, utility Permission to Operate (PTO), and 24/7 monitoring setup. Beyond installation services, OneSun is also a solar energy storage application integrator, founded in 2014, with its own factories focused on developing and producing lithium batteries and inverters. This vertical integration allows them to offer complete PV energy storage products using technical advantages like BYD automotive-grade smart BMS technology and high-quality components from international brands like INFINEON and TOSHIBA.