The amount of power that a 4 kW solar system installed in the south of England would generate in a year can vary depending on several factors, such as the specific location, the orientation and tilt angle of the solar panels, shading, weather patterns, and other environmental conditions. However, we can make some estimates based on average values.
Assuming the solar panels are facing south and have an optimal tilt angle of around 30 degrees, and there is no shading, a 4 kW solar system in the south of England can generate approximately 3,400 kWh of electricity per year. This value may vary by around +/- 15% depending on the specific factors mentioned above. It’s worth noting that the actual amount of electricity generated can also vary from year to year based on weather patterns and other factors.
Assuming you use 50% of the electricity generated by the 4 kW solar system and export the other 50%, and you are paying £0.30 per kWh for your power, and selling it at £0.15 per kWh, here’s an estimation of how much money you could save:
- Electricity generated: 3,400 kWh per year
- Electricity used: 50% of 3,400 kWh = 1,700 kWh
- Electricity exported: 50% of 3,400 kWh = 1,700 kWh
- Savings from self use electricity: 1,700 kWh x £0.30 per kWh = £510 per year
- Revenue from exported electricity: 1,700 kWh x £0.15 per kWh = £255 per year
- Total savings: £510 (electricity used) + £255 (revenue from exported electricity) = £765 per year
Please note that this is just an estimation of a standard solar system (not using a battery or charging an electric car), and the actual savings may vary based on various factors such as the specific location, energy consumption habits, and the electricity prices in your area.
If you are paying more for your power (many standard tariffs are about £0.36 per kWh currently) then the savings only go up. Add in a battery and an electricity tariff that offers cheaper rates at night and you can save more still.
Contact us if you’d like to arrange a home survey to see what you might be able to achieve.