Free calculator · Editable examples
EV & PHEV Charging Cost Calculator Ireland
Work out the cost of one charge, annual electric or plug-in hybrid driving, and selected household electricity plans. Include charging losses and your own prices.
Example: 16 kWh/100km of battery energy at 90% charging efficiency and 10c/kWh costs €1.78 per 100km. Your car, driving conditions and tariff can change the result.
No account needed. All starting inputs are editable examples. Results compare energy costs; a tariff is not an installation quote.
Compare EV electricity plans · Plug-in hybrid charging guide · Shared or workplace parking
Compare example electricity prices
All scenarios use 16 kWh/100km of battery energy and 90% charging efficiency (17.78 kWh from the meter). These are editable illustrations, not supplier rates.
| Unit price | Per 100km | Per 16,000 km |
|---|---|---|
| 10c/kWh example | €1.78 | €284 |
| 20c/kWh example | €3.56 | €569 |
| 35c/kWh example | €6.22 | €996 |
| 60c/kWh example | €10.67 | €1,707 |
Annual energy comparison
Example petrol: €1.85/L at 6.5 L/100km. Example diesel: €1.78/L at 5.5 L/100km. EV: 10c/kWh with the consumption and efficiency above. These are energy costs before installation or vehicle costs.
| Annual mileage | Petrol | Diesel | Electricity |
|---|---|---|---|
| 8,000 km | €962 | €783 | €142 |
| 16,000 km | €1,924 | €1,566 | €284 |
| 24,000 km | €2,886 | €2,350 | €427 |
How the calculator works
- Annual fuel cost
- (Annual km ÷ 100) × litres per 100km × price per litre.
- Annual electricity cost
- (Annual km ÷ 100) × battery kWh per 100km ÷ (efficiency % ÷ 100) × price per kWh.
- Charging session cost
- Usable battery kWh × charge percentage added ÷ charging efficiency × metered unit price. Time bands are priced separately when a reviewed tariff is selected.
- PHEV combined energy
- Electric-distance charging cost + engine-distance petrol cost. Use your observed electric distance share and engine-mode fuel consumption.
Use your actual vehicle consumption and tariff. Weather, speed, driving style and charging conditions affect energy use. Solar electricity also has an opportunity cost if you would otherwise receive an export payment. This tool does not model emissions or total vehicle ownership costs.
For independent guidance, see SEAI on EV charging and SEAI’s vehicle comparison tool. Our example inputs are not SEAI averages or recommendations.
How to compare an EV electricity plan · Home charging costs explained
Calculator FAQ
- How much does it cost to charge an EV at home in Ireland?
- Multiply the electricity taken from your meter by your unit price. For an illustrative 16 kWh/100km of battery energy, 90% charging efficiency and 10c/kWh, the cost is €1.78 per 100km. At 16,000 km/year, that is about €284 per year. These are example inputs, not a supplier quote or a national average.
- How do I compare an EV with petrol or diesel?
- For the same mileage, compare litres per 100km multiplied by the pump price with metered kWh per 100km multiplied by the electricity price. The example petrol inputs (6.5 L/100km at €1.85/L) cost €12.03 per 100km; example diesel inputs (5.5 L/100km at €1.78/L) cost €9.79. Replace both with your own figures. This compares energy only, not the cost of buying or owning either car.
- Does the calculator include charging losses?
- Yes. Metered energy equals battery energy divided by charging efficiency. The editable 90% example means 10% of electricity drawn from the meter is lost. Actual losses depend on the vehicle and charging conditions. If your consumption figure already measures electricity at the meter or includes charging losses, set efficiency to 100% to avoid counting them twice.
- Which electricity price should I enter?
- Use the unit price including VAT from your current bill or a supplier offer for which you qualify. If charging spans multiple rates, use an average weighted by the kWh bought at each rate. Include public charging if you use it. Check time windows, meter requirements, standing charges, session fees, discounts and contract terms separately. Supplier presets show their review date and full time bands. Manual starting prices are examples. Neither is a whole-market cheapest-tariff ranking.
- Can I calculate plug-in hybrid charging costs?
- Yes. Select Plug-in hybrid and enter the share of distance driven electrically. Annual costs combine metered charging electricity with petrol for the remaining distance. Conventional and mild hybrids cannot be plugged in. Check your exact car's usable battery capacity and AC charging limit.
- Are these total ownership costs or a supplier quote?
- No. Annual car results compare electricity and fuel, excluding purchase price, servicing, finance, insurance and fixed or session fees. Household plan estimates separately include the standing charge where verified and any levy you enter. They exclude credits, exit fees and usage-threshold surcharges. Confirm your full supplier quote before switching.
Check your home installation options
Standard BENY package: €1,599 paid upfront, or €1,299 after the €300 SEAI grant if eligible and received. Send your property details and photos so we can confirm the installation scope before you book and pay.