Appliance Running Costs

Watts - Total Wattage of the appliance:

Watts should be a whole number from 1 to 20000 Watts - 20kW Max

Unit Day Rate Pence (round up to nearest penny), eg 30:

What's your daily Energy Unit Cost in whole pence? eg 15

Unit Night Rate Pence (round up to nearest penny), eg 20:

What is your Night Unit Cost in pence? eg 8

Total Number of On Hours the appliance is on:

How many hours in TOTAL is this running for? (1 to 24)

Hours On 'Off Peak' (also know as Economy 7):

On Time % (eg heater 70% or lamp 100%):

The Duty Cycle in % and is a value from 1 to 100 percent

Running Costs - Daily, Weekly, Month & Quarterly and Yearly:

NOTE: you need to add VAT at the appropriate rate, typically 5%

Reset Values

v11.02

How to Use:
Enter the total Wattage of your appliance, eg 1000W (this is the same as 1kW), the percentage it is actually using power (AKA the 'Duty Cycle') eg, a water heater on a thermostat may use power for only 50% of the time once the water is hot (if you not sure then leave at 100%), how many hours it is on for, including any 'off peak' hours and then enter the cost per KWh, eg 30p. If you have a low rate, eg E7 then enter the rate and number of hours it is on during the low rate times too. Now click the 'Calculate' button to get an estimate of the running costs over various time periods or click 'Reset Values' to restart and calculate another appliance.
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Ever wondered how they get your Gas kWh values? Please click here for info.