🧮 Free Irish Energy Tools: Updated 2026

Calculate your real energy costs

Scroll down to find your calculator: EV charging, home solar, business solar, fleet grants and more. All built on live Irish rates and SEAI grant values.

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Example result
EV Home Charging: Annual Cost
VehicleVW ID.4 Pro (77 kWh)
Annual mileage15,000 km
Electricity tariffEV Boost Rate (€0.0884/kWh)
Charger7kW Home Wallbox
Annual home charging cost €994
vs €2,092/yr equivalent diesel fuel
Annual saving vs diesel €1,035
⚡ Covers all 7 Irish charging networks & every Irish-market EV
EV Charging Calculators

How much does charging your EV actually cost?

Home night rates, ESB e-car, IONITY, EZO (formerly EasyGo): the Irish EV charging landscape has never been more complex. Our EV calculators cut through the noise, giving you exact costs for your vehicle, your tariff, your driving pattern.

  • Home charging: compare day rate, night rate, EV-specific tariffs across all Irish energy suppliers. See real annual savings over petrol and diesel.
  • Public networks: model costs across ESB, EZO (formerly EasyGo), IONITY, ePower and more. Cost per session, per 100 km and per month.
  • Network memberships: is ESB Advantage, Ionity Passport or PAYG cheaper for your annual mileage? Know before you subscribe.
  • Real-world Irish range: adjust for winter temperatures, motorway driving and load across every Irish-market EV.
🏠Home Charging ⚡Public Networks 💳Memberships 📏Real Range
Example result
Home Solar & Heat Pump: System Cost
Solar system10 × 430W panels = 4 kWp
BatteryPylontech US3000C 7.4 kWh
Heat pumpDaikin Altherma 3 H HT 11 kW
Current heatingOil boiler, radiators suitable
Net cost after SEAI grants €10,240
Grants applied: €1,800 solar + €600 battery + €12,500 heat pump (€10,500 unit + €2,000 boiler scrappage), plus a 10% combined-install labour saving. Example run from the calculator on current database prices.
Estimated annual solar and battery saving €1,326
☀️ Models all current SEAI residential and commercial solar grant schemes
Solar & Home Energy Calculators

Is solar worth it for your home or business?

With SEAI grants, falling panel costs and rising electricity prices, solar has become genuinely compelling for Irish homes and businesses. But the maths is complex. Our solar calculators do it for you. Grant figures checked against seai.ie in October 2026.

  • Home solar & heat pump: model a full system with SEAI residential grants auto-applied. Choose from 13 panels, 15 inverters, 15 batteries and 12 heat pumps.
  • Business solar (10–100 kWp): VAT reclaim (23% hardware, 13.5% install), ACA year-1 tax write-off and SEAI Non-Domestic Microgen grant, all calculated together.
  • See payback period, 10-year and 20-year ROI, all modelled on actual Irish irradiance data for your system size.
☀️Home Solar & Heat Pump 🏢Business Solar
Example result
Fleet EV Grant Calculator: Single Vehicle
VehicleFord eTransit 350L van
CategoryN1 Van ≤ 2,500 kg
List price€52,395
SEAI grant− €7,600
VRT reliefExempt (van)
Net cost after grants €44,795
Models all 205 Irish-market EVs across 5 categories: cars, vans, trucks, minibuses & coaches
📊 Fleet model: multiply per-vehicle grants across your entire fleet
Fleet & Business Calculators

How much can your business claim back?

Irish businesses switching to EVs and solar face a complex mix of grants, tax reliefs and running cost changes. Our business calculators model everything in one place.

  • Fleet EV grant calculator: SEAI grants across all 205 Irish-market EVs. Cars, vans, minibuses, buses and heavy trucks. See net cost per vehicle and total fleet saving.
  • BIK calculator: work out the actual annual tax cost of a company car or van, including the 2026 Category A1 electric vehicle rates and the OMV reduction taper.
  • Business solar calculator: VAT reclaim (23% hardware, 13.5% install), ACA accelerated capital allowance and SEAI Non-Domestic Microgen grant calculated together. For SMEs, farms, schools and enterprise.
  • Model the full transition cost: combine grant savings, fuel savings and solar ROI for a complete business case.
🚛Fleet Grant Calculator 🧾BIK Calculator 🏭Business Solar Calculator
📱
Already running EV chargers or parking on-site? Turn them into a bookable, revenue-generating asset with De Energy Hub app, using the car park or chargers you already have. Explore the app →
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The journey continues →

Now find the right product

You've modelled the costs; the next step is comparing the actual products. Our directories have full specs, Irish pricing and SEAI grant guidance on every item.

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🚗
Electric Vehicle Directory
205 EVs with full specs, Irish pricing, SEAI grants and real-world range estimates. Cars, vans, trucks, buses and motorcycles.
Browse 205 vehicles →
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EV Charger Directory
24 home and business EV chargers: 7kW smart wallboxes to 50kW DC rapid chargers, with SEAI grant eligibility and Irish pricing.
Browse 24 chargers →
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All Energy Directories
Solar panels, inverters, batteries, heat pumps, hot water cylinders, smart energy systems and generators, all in one hub.
Browse all directories →
📱
De Energy Hub App
Run the numbers, then turn your own car park or charger into a bookable, revenue-generating asset, using the car park or chargers you already have, live in under an hour.
Explore the app →
Explore all energy product directories →