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How Much Does It Cost?

Electricity bill estimator

Electricity bills combine a variable part (what you use) with fixed parts and taxes that differ by country. This calculator applies no country rules by default: you enter the items on your bill and get the total and the real average price per kWh.

Energy Updated:

Inputs

kWh
days
$/kWh

Check the price per kWh on your bill or contract. The starting value is only an example.

kW

Some countries (e.g. Spain) charge a capacity fee per kW per day. Leave 0 if it does not apply.

$/kW·day
$

Fixed charge per day of supply, if your tariff has one.

$

Meter rental, add-on services, etc.

%

If your country applies a specific tax on energy and capacity, enter its percentage.

%

Enter the rate that applies to electricity in your country.

Starting values are editable examples, not official prices. Results update automatically as you change the inputs.

Result

Electricity bill estimator — How Much Does It Cost?

Estimated bill total

$45.00

Cost per day
$1.50
Average all-in price per kWh
$0.15/kWh
Energy
$45.00
Capacity and fixed charges
$0.00
Taxes
$0.00
Bill breakdown
Energy: $45.00Total$45.0
  • Energy$45.00 · 100%
Calculation breakdown
  1. Energy = 300 kWh × $0.15/kWh = $45.00
  2. Capacity = kW × price × days = $0.00
  3. Electricity tax = (energy + capacity) × % = $0.00
  4. Fixed charges = $0.00 daily + $0.00 for the period
  5. Taxable base = $45.00; VAT/sales tax = $0.00
  6. Total = $45.00 + $0.00 = $45.00

Indicative result based on the data you entered. It does not replace a professional quote or your actual bill.

How it is calculated

Energy = kWh × price. Capacity = contracted kW × price per kW per day × days. Electricity tax = (energy + capacity) × %.

Base = energy + capacity + electricity tax + fixed charges. Total = base × (1 + VAT/sales tax). Average price = total ÷ kWh.

Worked example

Using the calculator’s example values:

  • Energy used in the period: 300 kWh
  • Days in the billing period: 30 days
  • Energy price: $0.15/kWh
  • Contracted capacity (if your tariff charges it): 0 kW
  • Capacity price: $0.00/kW·day
  • Daily standing charge: $0.00
  • Other fixed charges for the period: $0.00
  • Electricity tax: 0%
  • VAT or sales tax: 0%

Result: Estimated bill total — $45.00 (cost per day: $1.50; average all-in price per kwh: $0.15/kWh; energy: $45.00).

Money-saving tips

  • Check whether any contracted capacity matches what you actually need.
  • Compare offers by the all-in average price, not just the unit rate.
  • Shift usage to cheaper hours if your tariff has them.

Frequently asked questions

Why is the average price higher than my unit rate?

Because it spreads fixed charges and taxes over the kWh used. The less you use, the more the fixed parts weigh.

Which taxes should I apply?

Those shown on your bill. Each country (sometimes each region) has its own and they change; that is why we don’t fill them in automatically.

What if I have time-of-use pricing?

Work out the weighted average energy price (sum of kWh × price for each period ÷ total kWh) and enter it as the price.

GuideHow to calculate an appliance’s electricity use and cost

How we calculate and the limits of the results: Methodology.

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