Solar & Battery Installation San Francisco Local Installers & Quotes
Design solar and battery systems for San Francisco using Photonik's professional design platform. Despite its famous fog, San Francisco receives strong solar generation year-round, particularly in the sunnier southern and western neighbourhoods. California's supportive solar policies and high electricity rates make rooftop solar a compelling investment for SF homeowners.
Solar Design San Francisco
Energy Usage
Homes in San Francisco using around 35 kWh daily face significant electricity costs — and solar can substantially reduce them, especially as energy prices continue rising. Whilst typical San Francisco households consume 35 kWh daily, homes with good insulation and modern appliances often use far less energy.
Simple changes like sealing draughts, upgrading to LED lighting, and setting hot water timers often cost far less than extra solar panels and deliver immediate bill savings.
Typical energy usage per person per day in San Francisco:
Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.
Solar System Sizing
For a San Francisco household using 35 kWh daily, 9.2kW is the baseline — your roof space, budget, and future plans will determine whether to go larger. We recommend sizing between 13.8kW and 18.4kW for optimal results as solar output fluctuates daily and seasonally.
A 13.8 kW system in San Francisco generates approximately 58.2 kWh daily on average, with seasonal variation from 3.21 kWh/kW/day in December to 4.79 kWh/kW/day in August.
Solar & Energy Savings
Calculate Heat Pump & EV Savings
Electrify your home by replacing gas heating, petrol vehicles, and other fossil fuel appliances with electric alternatives powered by clean solar energy. This delivers significant additional financial savings and substantial carbon emission reductions. Our calculator helps you compare costs and model the financial impact of switching to electric appliances and vehicles.
How Solar Reduces Your Electricity Bills
The calculations below show how your electricity bills change with solar. Your Old Bill of - per month (- annually) is calculated from your total energy consumption multiplied by the grid electricity rate. Your New Bill of - per month (- annually) accounts for solar generation, the percentage you use directly (self-consumption), remaining grid consumption, and feed-in credits for excess energy exported to the grid. This results in monthly savings of - (- annually).
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Battery Storage San Francisco
Solar Battery Sizing
Even without a battery, 50% self-sufficiency from a 13.8 kW system in San Francisco means a significant reduction in your electricity bills. With a 10 kWh battery added, energy independence increases to approximately 76% per year, whilst grid dependency falls to 24%.
For accurate battery savings and ROI calculations, use the full Photonik design tool.
Energy Self Sufficiency Calculator*
*Note: This calculator provides simplified battery self-sufficiency estimates. For accurate per-hour simulations that account for solar generation patterns, consumption timing, battery charging/discharging cycles, and efficiency losses across all seasons, use the full Photonik design tool.
Panel Placement Tool San Francisco
This is a simple panel placement tool that lets you quickly estimate panel count for a single roof area. Try Photonik for advanced features:
- Multiple panel groups
- Custom roof angles
- Panel orientation
- Shade loss calculations
- Panel selection (1000+ models)
- Full integration with our design tool
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Solar & Battery System Cost San Francisco
Understanding Solar & Battery System Costs
A 13.8 kW solar system at approximately $19,872 in San Francisco can pay for itself through reduced electricity bills — often in under 9.2 years. Solar systems typically achieve payback in around 9.2 years, whilst adding battery storage extends the payback period but provides greater energy independence.
Pricing includes equipment, labour, and taxes. Use the sliders to adjust system size and battery capacity, observing how changes impact total cost and payback.
ITC Rebates San Francisco
The federal Investment Tax Credit (ITC) for residential solar ended on December 31, 2025. To have qualified, the system had to be installed and operational by that date. Large-scale and commercial solar credits follow different rules.
Many states and local utilities still offer rebates and incentives. These can include state tax credits, cash rebates, performance-based incentives, and net metering programs that allow you to sell excess solar energy back to the grid. Check your state energy office and utility for current programs.
Use our full design tool for detailed system design, panel placement, and professional proposals.