PG&E Service Area
Solar Panels in Solano County, California
VoltSol Energy serves 4 cities across Solano County with off-grid solar installations. Our EG4 battery systems start at $8,700 — designed to reduce your PG&E bill, provide backup power, and sidestep NEM 3.0 complexity.
County Snapshot — Solano County
Utility Rate
PG&E: Estimated $0.44/kWh residential rate. PG&E residential blended rate (E-TOU-C tier, 2025-2026 range). High rates make solar economics very strong, especially for inland areas (Fairfield, Vacaville) with high cooling demand.
Permit Office
Solano County Resource Management / City Building Departments (Fairfield, Vacaville, Vallejo, Benicia) (Solano County / individual cities). Typical turnaround: 2-4 weeks. Permit timelines vary by jurisdiction. Fairfield, Vacaville, Vallejo, and Benicia each have their own city building departments. Unincorporated areas fall under Solano County Resource Management.
Climate Zone
Zone 12: Hot-dry summer with mild winter for inland areas (Fairfield, Vacaville). Coastal areas (Vallejo, Benicia) experience more moderate temperatures with marine influence but still see strong solar production.
County Context
Solano County spans from the inland valley (Fairfield, Vacaville) to the San Francisco Bay waterfront (Vallejo, Benicia). Inland areas experience hot summers with high cooling demand, while coastal areas have more moderate temperatures. High PG&E rates throughout the county make solar economics strong. The county is strategically located between Sacramento and the Bay Area.
Why Solar in Solano County?
Homeowners in Solano County are served by PG&E, which has seen significant residential rate increases in recent years. Off-grid solar offers a way to lock in energy costs at installation prices and protect against future hikes.
Our systems combine rooftop solar panels, EG4 battery storage, and inverters to power your home’s most energy-intensive loads — like heating, cooling, and major appliances — without relying on the grid. That means no utility buyback complexity under NEM 3.0, and backup power during PSPS shutoffs or outages.
With the 30% federal solar Investment Tax Credit (ITC) still available, the economics of solar in Solano County are stronger than ever. Consult a tax professional to confirm your specific eligibility.