For Clare Naylor and her family, winter heating once meant keeping a close eye on the energy meter. The Milton Keynes household used hot-water bottles, extra blankets and jumpers to make sure its heating costs stayed within budget. That has changed after their four-bedroom detached house was fitted with solar panels, a heat pump and a large battery. The retrofit has effectively turned the property into a small power station, allowing it to generate and store electricity and send surplus power back to the grid. The family can now use Octopus Energy’s Zero Bills tariff, which guarantees no energy bills for five years as long as the household stays within its agreed fair-usage limit.
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