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Calculate your energy costs
Most electrical equipment has a nameplate or sticker giving the power rating in watts or kilowatts (1,000 watts = 1 kilowatt).
This simple formula will help you estimate the running costs of your equipment:
Watts ÷ 10 = daily cost
Example: 100 Watts ÷ 10 = 10 pence a day
Estimated running costs of some common appliances:
| Appliance | Estimated cost per day |
Estimated cost per quarter |
| 100 Watt desk lamp | 10p |
£9 |
| Desktop computer | 30p |
£27 |
| Drinks chill cabinet (single) | 75p |
£67 |
| Photocopier | £1.30 |
£120 |
| Convector heater (2000 watts) | £2.00 |
£180 |