EV vs Petrol vs Diesel Savings Calculator (Ireland)
Compare home-charging an EV against petrol or diesel using May 2026 fuel prices and real Irish EV night-rate tariffs. See annual savings, charger payback, and 5-year net savings.
EV charging cost calculator Ireland: quick answer
A typical Irish commuter driving 16,000 km/year spends about €154–€216 per year charging an EV at home on a smart night-rate tariff. The same driving pattern costs about €1,925 per year in petrol or €1,567 in diesel, so home charging can save roughly €1,350–€1,770 per year before motor tax and servicing savings.
Home EV night rate
€154–€216/yr
Petrol equivalent
€1,925/yr
Diesel equivalent
€1,567/yr
Use the calculator below to adjust mileage, fuel type, consumption and tariff for your own car.
Calculate your savings
See how much you could save by switching to an EV with home charging. Defaults reflect May 2026 Irish fuel + electricity prices.
Your calculated savings*
Your charger pays for itself in 7 months. Apply takes ~5 minutes. We'll handle the rest.
*Estimates only. Defaults reflect Ireland market data (May 2026): petrol €1.85/L, diesel €1.78/L (AA Ireland), EV night-rate tariffs from 5.99c–9.94c/kWh (Pinergy, Bord Gáis, Energia, Electric Ireland), EV consumption from EV-Database WLTP. Your actual savings depend on driving habits, vehicle, electricity tariff, and current fuel prices. Current rates used: petrol €1.85/L, electricity 8.45c/kWh.
Annual fuel cost comparison (Ireland, May 2026)
Estimated annual energy cost for a typical car at three driving patterns. Petrol/diesel assume average Irish consumption (6.5 L/100 km petrol, 5.5 L/100 km diesel). EV column assumes 16 kWh/100 km consumption.
| Scenario | Petrol €1.85/L | Diesel €1.78/L | EV — Pinergy 5.99c/kWh | EV — Bord Gáis 8.45c/kWh | EV — day rate ~32c/kWh |
|---|---|---|---|---|---|
| Average commuter — 16,000 km/year | €1,925 | €1,567 | €154 | €216 | €820 |
| High mileage — 24,000 km/year | €2,886 | €2,350 | €230 | €324 | €1,229 |
| Low / city — 8,000 km/year | €963 | €783 | €77 | €108 | €410 |
Sources: AA Ireland fuel survey (April 2026), Save On Heat 2026 EV tariff comparison, EV-Database WLTP consumption figures.
How the calculator works
Fuel cost
(Annual km ÷ 100) × consumption (L/100km) × pump price (€/L)
EV electricity cost
(Annual km ÷ 100) × consumption (kWh/100km) × tariff (€/kWh)
Charger payback
€999 (net cost after SEAI grant) ÷ annual savings × 12 months
CO₂ saved
(Annual km × (fuel g/km − 40 g/km Irish grid EV)) ÷ 1,000
Default assumptions (May 2026)
- • Petrol: €1.85/L (AA Ireland April 2026 survey: €1.81–€1.91/L)
- • Diesel: €1.78/L
- • Electricity (default): Bord Gáis EV night rate 8.45c/kWh
- • Petrol consumption: 6.5 L/100 km (typical IE petrol family car)
- • Diesel consumption: 5.5 L/100 km (typical IE diesel)
- • EV consumption: 16 kWh/100 km (Irish mix of small + family EVs)
- • Annual mileage: 16,000 km (CSO average for IE private cars)
- • Charger net cost: €999 (after €300 SEAI grant on €1,299 all-in install)
Additional savings (not included)
The calculator only counts fuel/energy. Real-world EV ownership in Ireland adds these wins on top:
Motor tax
EVs pay €120/year in Ireland vs €200–€600 for petrol/diesel — typical saving €100–€480/year.
Servicing
EVs have no oil, fewer moving parts, less brake wear — typical saving €150–€300/year on annual servicing.
Toll discounts
M50 and Port Tunnel offer 50% EV toll rebates via the Low Emission Vehicle Toll Incentive scheme.
VRT relief on EV purchase
Up to €5,000 VRT relief on new EVs (separate from the €3,500 SEAI EV purchase grant) — applied at point of sale.
BIK (company car)
Lower benefit-in-kind on company-car EVs (0% on the first €35,000 of OMV through 2025, taper from 2026) — material saving for company-car drivers.
Solar PV synergy
If you have or plan home solar, daytime EV charging on free PV exports drops effective charging cost to near zero in summer months.
Calculator FAQ
- How much does it cost to charge an EV at home in Ireland in 2026?
- Charging a typical EV at home in Ireland on a night-rate tariff costs €2.40–€4.80 for a full charge, or €30–€60 per month for an average commuter (16,000 km/year). Specific EV night-rate tariffs as of May 2026: Pinergy 5.99c/kWh, Bord Gáis 8.45c/kWh, Energia Smart Drive 8.87c/kWh, Electric Ireland Night Boost 9.94c/kWh. The standard day rate is around 32c/kWh.
- How much do you save switching from petrol to an EV in Ireland?
- A typical Irish driver doing 16,000 km/year saves €1,500–€2,000 per year switching from petrol to home-charged EV — based on petrol at €1.85/L (AA Ireland April 2026) vs Bord Gáis EV night rate at 8.45c/kWh. Diesel drivers (typically 24,000 km/year) often save €2,500–€3,000 per year. The home charger pays for itself in 6–12 months at most.
- How much do you save switching from diesel to an EV in Ireland?
- Diesel drivers typically save more than petrol drivers because diesel cars cover higher annual mileage. At 24,000 km/year, diesel at €1.78/L and 5.5 L/100km, fuel cost is around €2,350/year. The same mileage in an EV at 8.45c/kWh and 16 kWh/100km is around €325/year — saving roughly €2,000 annually. Diesel-to-EV is the highest-value switch in Ireland.
- What is the cheapest EV night-rate tariff in Ireland?
- Pinergy currently offers the cheapest EV night rate in Ireland at 5.99c/kWh, followed by Bord Gáis at 8.45c/kWh (4-hour window) and Energia Smart Drive at 8.87c/kWh (also 4 hours, 02:00–06:00). Electric Ireland Night Boost is 9.94c/kWh but only runs 02:00–04:00. The cheapest tariff isn't always the best — match the window length to your typical charge time and household usage.
- How long does it take for a home EV charger to pay for itself?
- A 7.4 kW home EV charger costs €1,299 all-in from Volt Éire (€999 net after the €300 SEAI grant). For a typical Irish commuter doing 16,000 km/year switching from petrol, the charger pays for itself in 6–8 months at current 2026 prices. Higher-mileage diesel drivers see payback in 4–6 months.
- How much electricity does charging an EV actually use?
- Real-world consumption for popular EVs sold in Ireland: Hyundai Kona EV 13.4 kWh/100 km, Renault Mégane E-Tech 13.3, Tesla Model 3 14.7, MG4 14.5, VW ID.3 ~15.5, ID.4/Skoda Enyaq ~17, Kia EV6/Ioniq 5 ~17.5, and larger SUVs 19–20. To estimate your annual home charging cost: (annual km / 100) × consumption × your night-rate (€/kWh).
- Do I need a smart meter to get the EV night rate in Ireland?
- Yes — most EV-specific night-rate tariffs in Ireland (Bord Gáis EV, Energia Smart Drive, Electric Ireland Night Boost, SSE Airtricity EV) require a smart meter. ESB Networks installs smart meters free of charge; if you don't have one yet, you can request the upgrade via your supplier. The legacy NightSaver night rate (around 14.8c/kWh) works on standard meters but is more expensive than the smart-meter EV tariffs.
- Are public chargers cheaper or more expensive than charging at home?
- Public AC chargers in Ireland typically cost 35–50c/kWh; DC fast chargers cost 50–70c/kWh. That's 4–10× more expensive than charging on a home EV night rate (around 8.5c/kWh). For typical home use, charging at home overnight is overwhelmingly the cheapest option — public charging is only worth it for long-distance trips beyond your daily range.
Like the numbers? Lock in €999 net
Volt Éire installs the BENY 7.4 kW smart charger for €1,299 all-in (charger + Safe Electric certified install + materials + SEAI grant paperwork + certification + 2-year workmanship warranty). You receive €300 back from SEAI — net cost €999. Most installs finish in 2–4 hours.