Solar & Battery Installation Greenwich Local Installers & Quotes
ℹ️ Get quick estimates for solar and battery sizing, costs, and savings in Greenwich using these simplified calculators. For more accurate, advanced calculations, use the full Photonik design platform.
Solar Design Greenwich
Energy Usage
The right solar system size for your Greenwich property depends on how much electricity you use each day. Most households in Greenwich use around 15 kWh per day, whilst energy efficient homes can reduce this to roughly half.
Lowering energy usage before solar installation—via improved insulation and efficient appliances—often reduces required system size and enhances financial returns.
Typical energy usage per person per day in Greenwich:
Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.
Solar System Sizing
A 3.9kW solar system would typically cover your average daily electricity consumption. Optimal sizing ranges from 5.9kW to 7.9kW to accommodate daily and seasonal generation variations.
A 6.6 kW solar array in Greenwich delivers approximately 24.9 kWh daily, with generation varying seasonally from 2.09 kWh/kW/day in December up to 4.63 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).
Battery Storage Greenwich
Solar Battery Sizing
A 6.6 kW solar-only setup in Greenwich delivers around 45% self-sufficiency, leaving 55% dependent on grid electricity. Installing a 10 kWh battery boosts your energy independence to around 95% per year, cutting grid dependency down to 5%.
The full Photonik tool provides detailed battery savings and return on investment calculations.
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 Greenwich
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 Greenwich
Understanding Solar & Battery System Costs
A 6.6 kW solar system in Greenwich is priced at approximately £8,752, whilst adding 10 kWh of battery storage increases the total investment to around £13,557. Solar systems typically achieve payback in around 7.6 years, whilst adding battery storage extends the payback period but provides greater energy independence.
The cost breakdown shows estimates for equipment costs, installation labour, and applicable taxes. Adjust system size and battery storage to see how it affects total investment and payback periods.
Solar Rebates & Incentives Greenwich
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.