Solar & Battery Installation Greater London Local Installers & Quotes
ℹ️ Get quick estimates for solar and battery sizing, costs, and savings in Greater London using these simplified calculators. For more accurate, advanced calculations, use the full Photonik design platform.
Solar Design Greater London
Energy Usage
Understanding your household's energy usage is essential for sizing a solar system in Greater London. Whilst typical Greater London households consume 15 kWh daily, homes with good insulation and modern appliances often use far less energy.
Consider reducing your energy consumption first through better insulation and efficient appliances, as this can reduce the solar system size needed and improve your investment returns.
Typical energy usage per person per day in Greater London:
Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.
Solar System Sizing
You'll need around 3.9kW of solar to match your average consumption. For best results, size your system between 5.9kW and 7.9kW to account for fluctuations in solar output throughout the day and year.
A 6.6 kW solar installation in Greater London typically produces 24.8 kWh per day on average, with seasonal output ranging between 2.09 kWh/kW/day (December) and 4.63 kWh/kW/day (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).
Battery Storage Greater London
Solar Battery Sizing
Solar-only systems in Greater London typically provide 45% self-usage with a 6.6 kW installation, meaning 55% of your electricity still comes from the grid. With a 10 kWh battery added, energy independence increases to approximately 95% per year, whilst grid dependency falls to 5%.
Use Photonik's complete design tool for detailed battery savings and return on investment analysis.
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 Greater London
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 Greater London
Understanding Solar & Battery System Costs
A 6.6 kW solar system in Greater London is priced at approximately £8,752, whilst adding 10 kWh of battery storage increases the total investment to around £13,557. Payback periods for solar-only installations average approximately 7.6 years, whilst battery storage extends payback but significantly improves 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.
Solar Rebates & Incentives Greater London
While there are currently no federal government rebates for solar panel installations in the UK, there are still financial benefits available for solar system owners.
The Smart Export Guarantee (SEG) allows you to earn money by selling excess solar electricity back to the grid. Energy suppliers with more than 150,000 customers are required to offer SEG tariffs, which pay you for the renewable electricity you export. Rates vary by supplier and are typically set competitively.
Additionally, installing solar panels can significantly reduce your electricity bills by generating your own renewable energy. The savings depend on your energy consumption patterns and system size, but many homeowners see substantial reductions in their energy costs.
Use our full design tool for detailed system design, panel placement, and professional proposals.