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Electric shower cost: practical guide
This guide explains how to use the Count.ie electric shower cost. Calculate shower electricity, water use and cost per shower. Follow the inputs, method and worked example below, then compare your own scenario.
Guide written .
Open the Electric shower cost 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
Energy = power × shower hours × number of showers. Water = flow × shower minutes × number of showers.
Worked example
Illustrative inputs and their result.
Example inputs
- Shower power (kW)
- 9
- Minutes per shower
- 8
- Showers per day
- 2
- Days
- 30
- Electricity price (€/kWh)
- 0.3
- Flow (litres/minute)
- 6
Calculated example result
- Energy Cost
- €21.60
- Water Litres
- 2,880 L
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
Rated power is assumed constant while operating. Water-charge consequences and hot-water storage systems are excluded.
If your case falls outside this scope, use a more suitable calculator or contact us about an unclear method.