PG&E Service Area
Solar + Battery Storage in Marin County, CA
VoltSol gives 4 cities across Marin County a way to energy independence: residential solar paired with EG4 battery storage, from $8,700. Make your own power, store it, and keep the lights on through blackouts and PSPS shutoffs — instead of exporting it back to the grid for a fraction of what you paid under NEM 3.0.
County Snapshot — Marin 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 strong despite marine layer influence in many areas.
Permit Office
Marin County Community Development Agency / Individual City Building Departments (Marin County / individual cities). Typical turnaround: 2-4 weeks. San Rafael, Novato, and other cities have their own building departments. Unincorporated areas fall under Marin County CDA. Coastal and hillside areas may require additional review for fire zones or terrain.
Climate Zone
Zone 3: Mild marine climate throughout the county. Coastal and bayside areas experience frequent marine layer, while inland valleys (Novato, San Rafael) see more sun. Moderate temperatures year-round with low cooling demand but reliable solar production.
County Context
Marin County spans from the San Francisco Bay shoreline (San Rafael, Mill Valley) to the Pacific coast, with inland valleys (Novato) in between. Marine layer influence is common, especially near the coast, but solar production remains viable. High PG&E rates throughout the county make solar economics strong despite lower cooling demand. Many affluent neighborhoods value energy independence and environmental benefits.
Tax credit, exemption, and incentive information is general and subject to change. Consult a licensed tax professional and your county appraisal district (or equivalent local authority) for guidance specific to your situation.
Why Solar + Battery Storage in Marin County?
Homeowners in Marin County are served by PG&E, which has seen significant residential rate increases in recent years. Residential solar + battery storage offers a way to lock in energy costs at installation prices and protect against future rate 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 — while maximizing the power you keep and use yourself. That means no utility buyback complexity under NEM 3.0, and backup power during PSPS shutoffs or outages.
Under California's current net-billing rules (NEM 3.0), the credit homeowners receive for solar energy they export is typically only a small fraction of the retail price they pay to buy electricity back. The smart economics in Marin County shifted to storing and using your own power instead of selling it back. The federal 30% residential solar tax credit ended for systems placed in service after Dec 31, 2025, but California programs like SGIP battery rebates may still apply. Consult a tax professional to confirm your eligibility.