Home energy
Electricity bill Calculator
Calculate day/night usage, standing charges and VAT. This free electricity bill calculator shows the calculation and its assumptions so you can compare your own figures.
Calculated on your device
Your results
Total Bill€107.91
Calculate day/night usage, standing charges and VAT.
Usage Cost€75.00
Calculated outcomes
- Standing Charge
- €24.00
- Before VAT
- €99.00
- VAT
- €8.91
Assumptions and estimates
- Entered rates are euro amounts excluding VAT. Select the actual applicable VAT rate rather than assuming a legislative default. Discounts, credits and other levies are excluded.
- Method: Usage plus daily standing charges forms the pre-VAT bill; the entered VAT rate applies to that total.
- Verify the VAT rate and whether your quoted tariff already includes VAT. Other levies, discounts and credits are excluded.
Useful next steps
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the electricity bill calculation works
Usage plus daily standing charges forms the pre-VAT bill; the entered VAT rate applies to that total.
Verify the VAT rate and whether your quoted tariff already includes VAT. Other levies, discounts and credits are excluded.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review total bill and usage cost, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- Day usage (kWh)
- 200
- Night usage (kWh)
- 100
- Day rate excluding VAT (€/kWh)
- 0.3
- Night rate excluding VAT (€/kWh)
- 0.15
- Standing charge excluding VAT (€/day)
- 0.8
- Billing days
- 30
- Applicable VAT (%)
- 9
- Total Bill
- €107.91
- Usage Cost
- €75.00
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