Last updated: September 2026
Every plain-English guide on Climate Jargon Buster, sorted by topic: grants and loans, electricity bills, heating, insulation, solar, electric cars and the climate background behind it all. Each one gives Irish figures, the 2026 grant rules where they apply, and a calculator where the numbers are worth running yourself.
💶 Grants & Loans
🌿 SEAI Grants: Every SEAI grant available in Ireland for 2026: insulation, heat pumps up to €12,500, solar €1,800, EV chargers and more - amounts, eligibility and how to apply.
🌿 Home Improvement Grants: Every home improvement grant in Ireland for 2026: SEAI energy grants to €12,500, the €70,000 vacant property grant, adaptation grants and 2.99% loans - mapped.
🌿 Warmer Homes Scheme: The SEAI Warmer Homes Scheme gives fully free home energy upgrades in Ireland. Who qualifies in 2026, what is covered, real waiting times and how to apply.
🌿 Windows & Doors Grant: The new standalone SEAI windows and doors grant: €4,000 windows, €800 per door, no full retrofit needed. Amounts by home type, rules and real glazing costs.
🌿 Vacant Property Grant: The Vacant Property Refurbishment Grant: €50,000 for vacant homes, €70,000 for derelict ones. Eligibility checker, the process, and how to stack SEAI grants.
🌿 Boiler Replacement Grant: No SEAI oil or gas boiler replacement grant exists in Ireland - but up to €12,500 for a heat pump, €10,700 for over-66s and a €700 controls grant do.
🌿 Electric Car Grant: Ireland's €8,500 EV scrappage pilot sold out in 75 minutes. What happened, whether it will return, and the €3,500 SEAI grant, VRT relief and savings still available.
🌿 Home Energy Upgrade Loan: The Home Energy Upgrade Loan: Ireland's cheapest home improvement loan for retrofits - €5,000-€75,000 from ~3%, the 20% BER rule, lenders and grant stacking.
🌿 Retrofitting: Retrofitting in Ireland: what a full home energy upgrade costs, what you get back in savings and comfort, SEAI grants, and the right order to do the work.
⚡ Bills & Electricity
🌿 Best Electricity Provider: Which is the best electricity provider in Ireland right now? All 11 suppliers, unit price per kWh, NightSaver hours and rates, and how switching saves €300+.
🌿 Electricity Prices & Average Bill: Electricity prices in Ireland 2026: 35-38c per kWh standard, 30-33c discounted, night 17-21c, standing charges, and why the average bill is ~€1,750-1,850.
🌿 Night Rate Electricity: Night rate electricity in Ireland for 2026: the exact hours, how much cheaper night units really are, EV tariffs from 6c/kWh, the higher-day-rate trap and how to switch.
🌿 Pay-As-You-Go Electricity: Prepay electricity in Ireland: PrepayPower, Pinergy, Electric Ireland, Bord Gáis and SSE plans, the daily service charge, €20 emergency credit and CRU rules.
🌿 MPRN & GPRN Numbers: What an MPRN (11 digits, starts with 10) and a GPRN (7 digits) are, where they sit on your bill, how to find them without a bill, and why suppliers ask.
🌿 ESB Smart Meter Error: The March 2026 ESB Networks smart meter glitch showed huge usage figures, but no one was overcharged. What happened, what to do, and how to check your usage.
🌿 Appliance Running Costs: Irish appliance running costs per use: the electric shower, immersion and dryer do the damage - not standby lights. The league table and the fixes that pay.
🌿 Hot Water Costs: The same shower can cost 55c or 12c depending on how the water was heated. Immersion vs electric shower vs gas compared, with a calculator and the fix list.
🌿 Electric Heater Running Costs: What fan, oil-filled, convector, halogen and infrared heaters cost per hour at 2026 Irish rates, which is cheapest to run, and how gas and oil compare.
🌿 Dehumidifiers: Do you need a dehumidifier in Ireland? Compressor vs desiccant, what a 20 L unit really extracts, 2026 prices, daily running costs and when a vent is the fix.
🔥 Heating
🌿 Heat Pumps: Heat pumps in Ireland: how they work, real costs, up to €12,500 in SEAI grants from 2026, running costs vs oil and gas, and whether your home is ready.
🌿 Air-to-Water Heat Pump Cost: Air to water heat pumps cost €8,500-€18,000 installed in Ireland - up to €12,500 in SEAI grants brings that down. The line-by-line costs and running savings.
🌿 Air-to-Air Heat Pumps: Air to air heat pumps cost €1,500-€3,500 per unit in Ireland - a fraction of air-to-water. Where they shine, where they fall short, and the grant position.
🌿 Heating Oil Prices: Heating oil in Ireland is averaging ~€1,369 per 1,000L (Aug 2026). Why prices differ by county, the carbon-tax escalator, and the playbook for paying less.
🌿 Heating Oil by County: Average kerosene prices for all 26 counties, from Kilkenny (cheapest) to Limerick (dearest), why Cork, Galway and Kerry differ, and how to buy below average.
🌿 HVO Fuel: HVO fuel explained for Irish homes: the renewable heating oil that cuts CO2 by up to 90%, the ~€400 boiler conversion, real costs vs kerosene, and the catch.
🌿 Boiler Replacement Cost: New gas boiler €2,200-4,000 fitted, oil €2,800-5,000: 2026 prices by type and brand, the extras that add €1,000+, the rules, the €700 grant, heat pump option.
🌿 Gas Boiler Service: A gas boiler service costs €80-€120 in Ireland. What a proper service includes, the RGII legal rule, CO safety, and why booking before October saves money.
🌿 Storage Heaters: Storage heaters in Ireland: what they cost to run on 2026 night rates, the settings that save hundreds, modern HHR upgrades, and the €12,500 heat pump exit.
🌿 Underfloor Heating: Wet vs electric underfloor heating in Ireland: €50-110 per m² installed, bathroom and whole-house totals, running costs by heat source, and 2026 grants.
🏠 Insulation & BER
🌿 Attic Insulation: Attic insulation in Ireland for 2026: the SEAI grant of up to €2,000, real costs, how much depth you need, and why to avoid spray foam. Plain-English guide.
🌿 Wall Insulation: Wall insulation in Ireland for 2026: SEAI grants up to €8,000, cavity vs internal vs external costs compared, and how to choose the right type for your home.
🌿 Home Ventilation: Home ventilation in Ireland explained: why insulated homes grow mould without it, the four systems compared with costs, and the cheap fixes that work first.
🌿 BER Rating: BER ratings explained: what the A-G scale means, how the assessment works, why it affects your home's value and the cheapest ways to improve your rating.
🌿 BER Cert Cost: A BER cert costs €150-€300, lasts 10 years and is required to sell or rent. When you need one, the full exemption list, and the €50 SEAI contribution.
☀️ Solar & Renewables
🌿 Solar Panels: Solar panel costs in Ireland for 2026: €7,300-€9,300 for a typical 10-panel system before the €1,800 grant, price per panel and per kWp, and real payback.
🌿 Are Solar Panels Worth It?: Are solar panels worth it in Ireland? The real 2026 payback maths: what a typical home pays and saves, when panels are not worth it, and the €1,800 grant.
🌿 Solar Cost Calculator: Free solar panel cost calculator for Ireland: estimate installed cost after the €1,800 grant, annual savings and payback for your roof, usage and supplier.
🌿 How Many Panels Do I Need?: How many solar panels does an Irish home need? The sizing maths (10 panels suits most), a usage table, roof-space check and a calculator to run your numbers.
🌿 Best Solar Installers: How to choose the best solar panel installer in Ireland: the SEAI-registration rule, the four warranties, quote red flags and the questions that expose cowboys.
🌿 Home Battery Storage: Home battery storage in Ireland for 2026: real costs with and without solar, the night-rate trick that halves payback, sizing, and who should skip a battery.
🌿 Solar Water Heating: Solar water heating in Ireland: €4,000-€6,000 installed, €1,200 SEAI grant, 50-60% of your hot water - and the honest thermal vs PV comparison for 2026.
🌿 Wind Energy: Wind energy in Ireland explained: a third of all electricity, 13,600+ GWh a year, how turbines work, offshore plans and what it means for your bills.
🌿 Renewable Energy: Renewable energy in Ireland: the 80% by 2030 target, wind, solar, storage and grid reality - your complete plain-English guide to the energy transition.
🚗 Electric Cars
🌿 Electric Cars Guide: Electric cars in Ireland: the €3,500 grant, new EVs from €16,990, used bargains, €5 night-rate charges and the honest trade-offs - the complete 2026 picture.
🌿 Cheapest Electric Cars: The cheapest electric cars in Ireland for 2026: Dacia Spring from ~€16,990, BYD, Leapmotor and Hyundai under €19k - guide prices, grant rules and the trade-offs.
🌿 Used Electric Cars: Used electric cars in Ireland: why 45-55% three-year depreciation is your discount, the battery checks that matter, what each budget buys, and the traps.
🌿 EV Home Charger: Home EV chargers in Ireland for 2026: the €300 SEAI grant and who qualifies, real installation costs, and the best chargers compared - from Zappi to Ohme.
🌿 EV Charger Installation: EV charger installation in Ireland costs €200-€400 plus the charger. What the job involves, the extras 1 in 4 homes need, and the €300 grant sequencing rule.
🌿 Public EV Charging: Public EV charging in Ireland: ESB ecars, EasyGo, Ionity and Tesla compared, real per-kWh prices by tier, and the membership tactics that cut costs.
🌍 Climate
🌿 Climate Change Ireland: Climate change in Ireland: the legally binding targets, carbon budgets, where emissions actually stand and what is being done - explained in plain English.
🌿 Carbon Tax: Budget 2027 rates: €71 per tonne on petrol and diesel, cut to €48.50 on heating oil and gas. What you pay on petrol, diesel, gas and heating oil - and where the money actually goes.
🌿 Petrol & Diesel Prices: What petrol and diesel will cost in 2027 as the excise cut ends and carbon tax rises, with a pump price calculator.
🌿 Biodiversity: Biodiversity in Ireland: 31,000 species, why it matters, what is driving decline and what is being done - the plain-English guide for 2026.
🌿 Extreme Weather & the Economy: What extreme weather is already costing the Irish economy: flooded farmland, cancelled fixtures, construction delays - the sectors feeling climate change now.
🌿 Net Zero: Net zero means cutting emissions as far as possible and balancing the rest with removals. What it takes, and whether Ireland can get there by 2050.
🌿 Greenwashing: Greenwashing explained: how companies fake being green, the tricks to spot, and why new EU law is about to ban vague eco-claims on products.
🌿 Scope 1, 2 & 3 Emissions: Scope 1, 2 and 3 emissions explained for Irish businesses: what each scope covers, why CSRD reporting makes them unavoidable, and how to start measuring.
🌿 Circular Economy: Ireland reuses just 2-3% of its materials. What the circular economy means - reuse, repair, recycling over take-make-waste - and why it matters here.
🌿 Climate Glossary: Ireland's plain-English climate glossary: every term you'll meet in Irish policy, building regs and energy debates, explained with real Irish data.
🧮 Calculators and Checkers
🌿 Solar savings & cost calculator
🌿 EV grant & savings calculator
🌿 Insulation grant checker
🌿 EV home charging cost calculator
🌿 Hot water cost calculator
🌿 Vacant property grant checker
🌿 Heating oil fill cost estimator
🌿 MPRN / GPRN format checker
🌿 Dehumidifier running cost calculator
🌿 Electric heater running cost calculator
🌿 Boiler replacement cost estimator
🌿 Prepay vs bill-pay comparison
🌿 Underfloor heating cost estimator
Climate Jargon Buster is an independent resource. Grant amounts and prices quoted across these guides are correct as of the date shown on each page and are set by the SEAI, suppliers and government - we are not affiliated with any of them; check seai.ie for official terms.