Electricity Cost Calculator
What does your electricity cost per year – and what does a single appliance cost? With the energy price and standing charge from your contract
Calculated in your browser – nothing is stored
What do you want to calculate?
Shown on your last annual bill
Gross in cents per kWh from your contract or bill
Gross from your contract; annual amount divided by 12
Electricity costs per year
Price missing
Consumption is 2,500 kWh per year. Enter your energy price from your contract or bill – we do not store prices because every tariff differs.
- Consumption per year
- 2,500 kWh
Good to know
Your price counts
Energy price and standing charge differ by supplier, tariff and location. Use the gross prices from your contract.
Check your instalment
Compare the monthly cost with your advance payment – so you see early whether a back payment is coming.
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How to calculate your electricity costs
Your electricity bill has two parts: the energy price for each kilowatt hour used and the standing charge, which is due every month regardless of use. Annual costs are consumption × energy price + 12 × standing charge. Both prices are in your contract and on your annual bill.
For a single appliance only the energy price counts. You get the consumption from the power rating: watts × operating hours × days ÷ 1,000 = kWh. We deliberately do not store electricity prices – your own tariff is the only reliable basis.
Worked examples (sample prices, not market prices)
- Consumption
- 2,500 kWh
- Energy price (assumption)
- 32 cents/kWh
- Energy costs
- €800.00
- Standing charge (12 × €12)
- €144.00
- Electricity costs per year
- €944.00
- Electricity costs per month
- €78.67
- Calculation
- 100 W × 4 h × 365 ÷ 1,000
- Consumption per year
- 146 kWh
- Energy price (assumption)
- 30 cents/kWh
- Costs per year
- €43.80
Lowering electricity costs
Where recalculating pays off
- 1Always-on devicesAppliances running around the clock – fridge, router, circulation pump – use a lot despite low power. 10 watts add up to about 88 kWh a year.
- 2StandbyCount standby as a separate appliance with 24 hours per day. A switchable power strip ends it.
- 3Standing chargeWith low consumption, the standing charge makes up a large part of the bill – the effective price per kWh shows this.
- 4Advance paymentIf the calculated monthly cost is above your advance payment, a back payment is likely. Adjusting it with your supplier spreads it over the year.
Frequently asked questions about electricity costs
Calculation, appliances and tariff
How do I calculate the electricity cost of an appliance?
Power in watts × operating hours × days ÷ 1,000 gives the kilowatt hours; multiplied by the energy price gives the cost. An appliance with 100 watts running 4 hours a day uses 146 kWh a year – at 30 cents/kWh that is €43.80.
Why does the calculator not show an electricity price?
Electricity prices differ by supplier, tariff and location, and they change. An average would suggest a precision that does not exist. So enter the energy price and standing charge from your contract.
How much does 1 kWh cost?
As much as your energy price – plus the share of the standing charge. The calculator shows both together as the effective price per kWh.
What is the difference between energy price and standing charge?
The energy price is charged per kilowatt hour used; the standing charge is a fixed amount per month or year, even without consumption.