Spectrum Energy Development, Inc.

Spectrum Energy Development, Inc. is a leading solar photovoltaic system integrator and EPC contractor based in Elk Grove, California. Established in 2002 and operating under California Contractor License #892475 since inception, SEDI specializes in large-scale commercial and utility solar projects across California—including agricultural operations, commercial buildings, multi-family housing developments, government facilities, schools, water districts, and more.
The company’s team includes certified C10 electrical contractors as well as a professional engineer to manage all electrical drawings internally. With over 100 years of combined staff experience building solar PV plants throughout California, Spectrum delivers end-to-end project management—from initial design through permitting to construction and ongoing operation.
SEDI emphasizes quality by using only Tier 1 rated solar panels with a 25-year manufacturer warranty; all workmanship is backed by a full 10-year warranty. Their portfolio covers both fixed-mount arrays and advanced tracking systems installed on roofs or ground sites—including carports—tailored to client needs for maximum efficiency.
With more than 23 MW of installed capacity reported as of late 2023, Spectrum has built a reputation for reliability among agricultural producers seeking energy savings as well as commercial enterprises aiming to meet sustainability goals. The company also assists multi-family property owners with securing incentives/tax benefits related to clean energy investments.
Headquartered in Elk Grove with additional locations across Sacramento Valley/Northern California, SEDI remains privately held under the leadership of President/Co-Founder Donald Osborn.