Solar & Battery Savings Calculator
Estimate generation, bill savings and payback for a solar PV and battery system designed and installed by MCS-certified electricians in Lincolnshire.
Estimated annual saving
£1,625
≈ £135/month · based on 6,054 kWh/year usage
Solar only
£1,189
per year
With 10 kWh battery
£1,625
per year
Recommended system
7.5 kWp solar + 10 kWh battery
≈ 17 panels · hybrid inverter + storage · self-use ~81% · MCS design & install
- Annual generation
- 6,922
- kWh / year
- Self-consumed
- 81%
- 5,631 kWh used on-site
- Payback period
- 8.4 yrs
- years (approx.)
- 25-year CO₂ saved
- 33.3 t
- tonnes
- Indicative cost
- £13,956–£16,990
- 0% VAT (domestic)
- SEG export income
- £155
- per year (est.)
Estimates only — based on Lincolnshire sunlight (~925 kWh/kWp), the current Ofgem electricity rate (26.1p/kWh), a typical SEG export rate (12p/kWh) and standard self-consumption assumptions (higher with battery storage). Actual yield depends on shading, roof pitch, orientation and usage. Costs are indicative; every RJ Hill system is designed and quoted after a free site survey. Figures are conservative and exclude future energy price rises beyond 4%/yr.