OneSun

About OneSun

OneSun Inc., founded in 2009 and led by CEO Warren Brown, established itself as a specialized provider in the commercial solar energy sector in Northern California. The firm focused on designing and installing grid-tied solar systems for a diverse commercial clientele, including businesses, industrial facilities, municipalities, and agricultural operations.

The company's core business involved a comprehensive engineering, procurement, and construction (EPC) process. This turnkey service model managed projects from the initial site assessment and financial consultation to the final installation and post-installation monitoring. OneSun's technical capabilities included photovoltaic, cogeneration, and flat-plate thermal systems. It served a variety of commercial sectors, with a notable specialization in providing solar solutions for wineries, agricultural businesses, and food processing facilities. The company differentiated itself by not committing to a single materials manufacturer, instead negotiating with various vendors to procure the most efficient and cost-effective products for each specific project.

OneSun's business model was geared towards helping businesses improve profitability by integrating solar energy into their operations. To facilitate adoption, the company offered several financial solutions, including direct cash purchases, lease agreements through financial partners, and Power Purchase Agreements (PPAs), where a third party owns the system and the client purchases the generated power. The company's project portfolio included installations on rooftops, ground mounts, and parking structures. According to PitchBook, the company is no longer in business as of December 2015.