Operating-cost tool
AI server electricity calculator.
Use measured wall power when available. GPU TDP is not whole-system demand.
Estimated annual electricity
£0
- Annual energy0 kWh
- Monthly average£0
- Five-year energy, same inputs£0
Scenario only. Excludes standing charges, tariff changes, support and hardware cost.
Calculation record
See what sits behind the result.
The controls are deliberately editable. Record the values used, the date and the source before relying on an output in a buying decision.
Method
- Annual kWh = load kW × powered hours × days × loaded utilisation × facility factor.
- The facility factor represents cooling and other site overhead. A value of 1.20 adds 20%.
- Use measured whole-system wall power and the organisation’s contracted unit rate where available.
Worked reading
- At the default 1.5kW, 24 hours, 365 days, 35% load and 1.20 facility factor, the model estimates 5,519kWh a year.
- At 24.14p/kWh that is about £1,332 a year before standing charges.
- Raise the tariff and utilisation inputs to create a downside case.
Do not infer
- This is not an electrical design, cooling survey or supplier power guarantee.
- It excludes standing charges, tariff movement, maintenance and demand-related charges.
- GPU TDP is not a substitute for whole-system measurement.
How to use the result
Measure the complete server at the wall during the accepted workload. Use actual operating hours and a realistic loaded-utilisation figure. Add the site’s cooling or facility overhead, then test higher tariff and utilisation cases.
Cooling and serviceability are part of the purchase.
Site power, heat rejection, noise, airflow and access for maintenance should be checked against the final bill of materials before an order is accepted.
