How much does it cost to run a electric shower (10.5kW)? (2026 price cap)
At the GB-average Ofgem price cap for 1 October to 31 December 2026, a electric shower (10.5kW) rated at 10.5kW costs £2.76 an hour to run and around £134 a year assuming 1 shower a day, about 8 minutes.
Per hour
£2.76
Per typical use
37p
Per day
37p
Per week
£2.59
Per year
£134
Typical rating and how we worked this out
This page uses a typical rating of 10.5kW for a electric shower (10.5kW); published figures for this appliance range from 10.5kW to 10.5kW. 10.5kW is the highest common UK electric shower rating, giving the strongest, warmest flow of the three — but it needs the largest supply cable and consumes proportionately more for every minute it runs. The running cost follows the same formula used across this site: watts ÷ 1,000 × hours × unit rate. Typical use is modelled as 1 shower a day, about 8 minutes, which is how the per-day, per-week and per-year figures above were calculated — see the cost-to-run calculator to change the wattage, hours or region yourself.
Rate used: Ofgem price cap, 1 October to 31 December 2026, GB average electricity — 26.32p/kWh (excl. VAT, removed 1 Oct 2026–31 Mar 2027).
Cost by region
Same appliance, same use — ranked most to least expensive by region under the price cap:
| Region | Elec p/kWh | Cost per hour | Typical annual cost |
|---|---|---|---|
| Merseyside and Northern Wales | 27.86 | £2.93 | £142 |
| South Eastern England | 26.88 | £2.82 | £137 |
| Eastern England | 26.61 | £2.79 | £136 |
| London | 26.60 | £2.79 | £136 |
| South Western England | 26.58 | £2.79 | £136 |
| Southern Wales | 26.55 | £2.79 | £136 |
| North Western England | 26.49 | £2.78 | £135 |
| Southern England | 26.47 | £2.78 | £135 |
| Northern Scotland | 26.35 | £2.77 | £135 |
| Southern Scotland | 26.11 | £2.74 | £133 |
| West Midlands | 25.60 | £2.69 | £131 |
| Yorkshire | 25.60 | £2.69 | £131 |
| North Eastern England | 25.46 | £2.67 | £130 |
| East Midlands | 25.36 | £2.66 | £130 |
| Great Britain average | 26.32 | £2.76 | £134 |
East Midlands is cheapest at £130 a year; Merseyside and Northern Wales is most expensive at £142 a year — a gap of £12.77 for identical use.
How a electric shower (10.5kW) compares with similar appliances
Ranked by typical annual cost in heating & cooling, GB average:
- electric shower (10.5kW) — £134 a year (this page)
- electric shower (9.5kW) — £122 a year
- electric shower (8.5kW) — £109 a year
- dehumidifier — £173 a year
- heated airer — £88.38 a year
- electric underfloor heating (per m²) — £86.46 a year
Three practical ways to cut the cost
- Keep showers to the time it takes to actually wash
- Fit a flow-restrictor or aerated shower head to cut water use with little difference in feel
- Descale the element periodically in hard-water areas
FAQs
- How much does it cost to run a electric shower (10.5kW) for an hour?
- £2.76 at the GB-average rate (26.32p/kWh, 10.5kW). One typical use — 1 shower a day, about 8 minutes — costs closer to 37p.
- How much does a electric shower (10.5kW) cost to run per year?
- Around £134 a year at the GB-average rate, assuming 1 shower a day, about 8 minutes — about £2.59 a week.
- Which UK region is cheapest to run a electric shower (10.5kW) in?
- East Midlands, at £130 a year, against £142 in Merseyside and Northern Wales — £12.77 apart for identical use, purely from the regional rate.
- Does the exact wattage of my electric shower (10.5kW) change the cost much?
- Yes — ratings range 10.5kW–10.5kW, so the top of that range costs about 1.0x the bottom. This page uses 10.5kW; check your own rating plate.
- Does the October 2026 price cap affect this figure?
- Yes — figures use the Ofgem cap for 1 October to 31 December 2026. Electricity excludes VAT (removed 1 Oct 2026–31 Mar 2027); gas includes 5%. See the price cap page for the full breakdown.
Sources
- Heatable — how much energy do household appliances use — wattage and usage figures for this appliance.
- Ofgem — Energy price cap unit rates and standing charges (regional tables, read 12 September 2026).
Related
- Cost-to-run calculator and full A–Z — check any appliance or enter a custom wattage.
- Energy price cap, 1 October to 31 December 2026 — every region, every payment method.
- Back-billing calculator — if a bill for this or any appliance looks like it covers too many months.
- Free bill audit — if your overall energy costs look high regardless of any one appliance.
Send us one bill. We'll send back every overcharge — and the cheapest legitimate replacement.
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