UK family wins five years of zero energy bills after free retrofit — SkimNews
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- Clare Naylor's four-bedroom detached home in Milton Keynes, built in the 1980s, was fitted with 17 solar panels, a heat pump, four new radiators, and a large battery, qualifying the family for Octopus Energy's Zero Bills tariff that guarantees no bills for five years.
- The retrofit came as the UK energy price cap rose 4% today, with analysts predicting a further 16% increase in January.
- Santander paid for the retrofit as part of a project studying how to fund energy efficiency upgrades; the work would have cost just under £20,000 after a government grant and required removing the family's gas boiler.
- Octopus Energy's Zero Bills tariff, launched five years ago and operating in hundreds of new-build homes, requires properties to have good insulation, solar panels, a heat pump, a battery, and no gas at all — generating slightly more energy over a year than they use.
- Nigel Banks, Octopus's technical director of Zero Bills, said a fundamental requirement is generating enough surplus energy to sell back to the grid; the zero-bill promise does not cover EV charging, and the usage cap is set per household.
- Santander, which holds 1.5m UK mortgage accounts, is exploring retrofit financing; its existing home improvement loan at 6.4% over five years would cost £389 a month on a £20,000 project, per Mick Taylor of Santander.
- The Naylors previously kept their heating at 18C with hot-water bottles and blankets, paying about £130 a month — money Naylor now plans to redirect to family holidays.
Why it matters: The Naylor retrofit proves Octopus's Zero Bills model can work in older homes, not just new builds — but the £20,000 cost is the barrier. Santander's 1.5m mortgage book is now the test bed for whether loan products at £389/month can scale what free retrofitting achieved for one family, just as UK prices are forecast to climb another 16% in January.
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