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David’s whole-home energy upgrade
David lives in a three-storey home in Bristol. Wanting to make his home greener and cheaper to run, he turned to Good Energy to install an air source heat pump, a 7.5 kWp solar array, and a Tesla Powerwall 3 in 2025.
Key stats
Location: Bristol
7.565 kWp solar panel array with SolaSkirt
Tesla Powerwall 3
12kW Midea air source heat pump + 250L cylinder
Smart and export tariffs
Projected annual generation: 7,034 kWh
Projected annual savings: £1,694 per year*
Carbon offset: Equivalent to planting 84 trees annually
Upgrading his home:
David first spoke to Good Energy at the National Self Build and Renovation Centre, where he valued the team’s expert advice:
“Good Energy was a brand that I trusted to talk to about the work.”
When his old gas combi boiler began failing, he moved quickly to install a 12kW air source heat pump, completed in less than a week despite heavy rain. The results exceeded expectations:
“I thought it would be cold with poor loft insulation, but our home feels just the same as with the gas boiler.”
Afterwards, David fully disconnected from the gas grid, saving £120 a year in standing charges.
Dynamic, renewable power:
With solar, battery storage, and smart tariffs, David now manages his energy in a flexible way:
“I charge my battery overnight on Good Energy’s EV tariff, then export most of my solar during the day through the Solar Savings Exclusive tariff. Even on cloudy days, my panels power my car, heat water, and cover household needs.”
This whole-home system has cut costs, reduced his reliance on the grid, and delivered the resilience he wanted.
A ripple effect in the community:
As Director of Redland Green Sports Club, David extended his efforts, partnering with Good Energy to install a 158-panel, 68.73 kWp SolarEdge array. With a projected 3.7-year payback, the system is helping the club cut costs, lower emissions, and set an example for the community — with a commercial heat pump next in line.
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