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Electricity bill: practical guide
This guide explains how to use the Count.ie electricity bill. Calculate day/night usage, standing charges and VAT. Follow the inputs, method and worked example below, then compare your own scenario.
Guide written .
Open the Electricity bill calculatorWhat to prepare
- Use meter readings, bills, equipment specifications and actual tariff periods where possible.
- Separate power in kW from energy in kWh and daily use from annual use.
- Identify whether efficiency, standing charges and losses are included in the chosen model.
Understand the inputs
The calculation method
Usage plus daily standing charges forms the pre-VAT bill; the entered VAT rate applies to that total.
Worked example
Illustrative inputs and their result.
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
Calculated example result
- Total Bill
- €107.91
- Usage Cost
- €75.00
How to interpret the result
Energy consumption and money saved are different outputs. Results based on entered prices or efficiencies are scenarios, not a performance guarantee, installer quote or measured emissions assessment.
Use the same demand and time horizon for each option. Test a less favourable tariff, lower efficiency or lower use to see how sensitive the estimated saving is.
Common mistakes to avoid
- Do not count the same efficiency loss twice.
- Keep standing charges and unit charges separate when the model distinguishes them.
- Check seasonal demand, export restrictions and tariff assumptions before extrapolating.
Assumptions and sources
Verify the VAT rate and whether your quoted tariff already includes VAT. Other levies, discounts and credits are excluded.
If your case falls outside this scope, use a more suitable calculator or contact us about an unclear method.