Location
Totnes
Install Date
Apr 2024
Summary
A passivhaus in the centre of Totnes needing solar to offset electricity usage. We designed a flat roof system combined with battery storage an EV charger and a hot water diverter. The system was also fully optimised and had a backup box allowing the house to switch over to running off the battery and solar in the event of a power cut.
Installation
- 15.48kW of solar power
- 36 x JAM 430 watt panels
- 8 kW SolarEdge inverter
- 9.7 kWh SolarEdge home battery
- 3.68 kW single phase eco-smart energy diverter
- SolarEdge home backup interface
- 3 kW SolarEdge home hot water controller with temperature sensor
Outcomes
- £3,349 estimated first year savings
- 347% total return on investment
- 6 years, 1 month payback
- 118% energy from solar
- 3.5 tonnes of CO₂ avoided per year
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