How much electricity does a hot tub use?

3,000-5,000 kWh/year depending on size, insulation, and usage frequency. Cost at 24.5p/kWh: £735-£1,225/year. This is equivalent to an entire second household's electricity.

How many extra panels for a hot tub?

Add 3-5kW (8-13 panels) to your home system. This generates 3,000-5,000 kWh/year — matching the hot tub's consumption. Solar coverage: 30-60% (higher in summer, lower in winter).

Solar Panels and Hot Tub

By Home Solar Guide Team|Updated 18 March 2026|question

Independently written | Evidence-based | Sources cited

UK home with solar — powering a hot tub — A hot tub doubles your electricity bill — solar significantly offsets the running cost.

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Can solar panels power a hot tub?

A hot tub uses 3,000-5,000 kWh/year (costing £735-£1,225 at 24.5p/kWh). Solar can offset 30-60% of this cost depending on system size and usage pattern. To cover a hot tub, add 3-5kW of solar to your home system. Best approach: heat the hot tub during daylight hours when solar is generating, use a well-insulated cover to retain heat, and consider a time-of-use tariff for overnight top-ups.