UK energy cost scenarios: EV, heat pump, electric heating, hot tub, gaming PC
All figures use the real Ofgem price-cap electricity unit rate of 26.11p/kWh (1 July to 30 September 2026) — not estimates or national averages invented from memory. Every page has an interactive calculator so you can enter your own hours and see the real cost.
Source: Ofgem — Energy price cap unit rates and standing charges. Cap period 1 July to 30 September 2026. Published 2026-06-20.261 pages across 5 scenario types.
Key figures at 26.11p/kWh (1 July to 30 September 2026): EV home charge (Nissan Leaf 40 kWh, 20%→80%) = £6.27. 8 kW ASHP cold winter day (12 h) = £9.28. 2 kW panel heater × 4 h evening = £2.09. 4-person inflatable hot tub weekly = £2.43. RTX 3070 PC × 2 h session = 18.3p. Source: Ofgem, BEIS, SMMT, Which?, Nvidia (OGL v3.0 / public specs).
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EV Charging
Home charging cost for 16 popular UK electric cars at 26.11p/kWh. Daily top-up, weekly full charge, and commuter patterns.
Charging a Nissan Leaf 40 kWh from 20%→80% (32 kWh) costs £6.27.
64 specific usage scenarios →
Heat Pump
Air-source and ground-source heat pump running costs. 6 system sizes × 6 usage scenarios using real BEIS/DESNZ seasonal COP data.
An 8 kW ASHP (COP 2.7) running 12 hours on a cold winter day costs £9.28.
36 specific usage scenarios →
Electric Heating
Cost to heat a room with panel heaters, oil-filled radiators, convectors, infrared panels, and storage heaters. 8 heater types × 8 usage profiles.
A 2 kW panel heater for 4 hours each evening costs £2.09/evening.
64 specific usage scenarios →
Hot Tub
Cost to run 4 hot tub sizes across 10 usage scenarios — from occasional weekend use to daily soaking.
A 4-person inflatable hot tub used once a week costs £2.43/week.
40 specific usage scenarios →
Gaming PC
Electricity cost for 5 gaming PC builds from budget GTX 1660 to ultra RTX 4090 — across 10 session patterns.
A mid-range RTX 3070 PC for a 2-hour session costs 18.3p.
50 specific usage scenarios →
Energy cost scenario FAQs
How much does it cost to charge an electric car at home in the UK in 2026?
At the Ofgem cap rate of 26.11p/kWh (1 July to 30 September 2026), charging a Nissan Leaf 40 kWh from 20% to 80% (32 kWh) costs £6.27. A full 0%→100% charge costs £10.44. Costs vary by car battery size — see the per-model pages for all 16 cars.
How much does a heat pump cost to run per day in the UK?
An 8 kW air-source heat pump with a seasonal COP of 2.7, running 12 hours on a cold winter day, draws about 35.6 kWh of electricity and costs £9.28 at the current Ofgem rate of 26.11p/kWh. In milder weather (8 h running) the daily cost falls to £6.19.
How much does it cost to run a hot tub in the UK per month?
A 4-person inflatable hot tub used once a week (2 h active + standby) costs roughly £2.43/week at 26.11p/kWh, or about £10.52/month. A 4-person hard-shell hot tub in daily use (1 h/day) costs significantly more — see the detailed per-size pages.
How much electricity does a gaming PC use per hour in the UK?
A mid-range gaming PC with an RTX 3070 GPU draws about 350 W total, costing 9.1p/hour at the current Ofgem rate of 26.11p/kWh. An ultra RTX 4090 system at 675 W costs 17.6p/hour. See all 5 builds across 10 usage patterns.
What is the current Ofgem electricity unit rate used in these calculations?
All running costs on this page use the real Ofgem price-cap electricity unit rate of 26.11p/kWh, the average across England, Scotland and Wales for Direct Debit customers including 5% VAT, for the period 1 July to 30 September 2026. Source: Ofgem — Energy price cap unit rates and standing charges.
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Sources and method
All costs computed at the real Ofgem price-cap electricity unit rate of 26.11p/kWh (1 July to 30 September 2026), published by Ofgem (OGL v3.0). EV battery capacities: SMMT / manufacturer press packs 2024–2025. Heat pump COP: DESNZ/BEIS Heat Pump Information Note 2024 (OGL v3.0). Heater wattages: Energy Saving Trust guide (typical/indicative). Hot tub energy: Which? "How much does a hot tub cost to run" (2024). GPU TDP: Nvidia / AMD published specifications 2024. Full methodology: energy scenarios methodology. Ofgem.