Ireland generates more than 40% of its electricity from wind — one of the highest shares in the EU — which makes choosing a green electricity tariff both meaningful and affordable. Yet most households don't realise that several Irish suppliers offer 100% renewable tariffs at prices that are directly competitive with their standard deals. This guide covers the best green electricity tariffs in Ireland in 2026, how the renewable guarantee actually works, and how to find the cheapest green rate for your home.
What Makes a Tariff "Green"?
A green electricity tariff means your supplier commits to matching your consumption with an equivalent amount of electricity from renewable sources — typically wind, solar, or hydro — fed into the national grid on your behalf. This is certified through Guarantees of Origin (GOs), tradeable certificates issued when a renewable generator produces one megawatt-hour of electricity.
There are two main models in Ireland:
- GO-backed tariffs — the supplier purchases Guarantees of Origin equal to your annual usage. The actual electrons in your home are from the shared national grid, but the renewable accounting is matched.
- Co-operative / direct sourcing — the supplier sources electricity from named Irish renewable farms and passes those generation certificates directly to customers, without buying traded GOs separately.
Both models are genuine — the distinction matters mainly if you care whether your renewable certificates come from Irish or European wind farms.
Green Tariffs from the Major Irish Suppliers
Most of Ireland's seven major electricity suppliers now offer at least one green-labelled tariff. Here's what to look for across the market:
Electric Ireland offers a standard 100% renewable tariff alongside its regular deals. The discount percentage and unit rate sit close to its non-green options, making the premium for going green minimal.
SSE Airtricity markets itself as Ireland's largest renewable energy provider and backs its home electricity tariffs with wind energy from its own generation portfolio.
Energia offers an eco tariff backed by renewable energy certificates, priced in line with its standard range.
Bord Gáis Energy includes a green option with GO certification. New customer discounts apply in the same way as their standard tariffs.
Flogas and Pinergy offer renewable-backed plans, with Pinergy's smart tariff structure also compatible with green options for homes with smart meters.
| Supplier | Green Tariff Available | Renewable Source | |----------|----------------------|-----------------| | Electric Ireland | Yes | Wind / Hydro (GO-backed) | | SSE Airtricity | Yes | Own wind portfolio | | Energia | Yes | GO-backed | | Bord Gáis Energy | Yes | GO-backed | | Flogas | Yes | GO-backed | | Community Power | Yes | Irish wind & solar (direct) |
Community Power — The Co-operative Choice
Community Power is in a different category. It is a not-for-profit renewable energy co-operative that sources electricity exclusively from Irish wind and solar farms. Members can also invest in renewable projects, and any surplus from the co-operative is reinvested in Irish clean energy rather than paid to shareholders.
Community Power offers two tariffs — a standard rate and a night-rate option for smart meter households — both sourced from 100% Irish renewables. The unit rates are competitive with the discounted rates of the larger commercial suppliers. If provenance matters to you — knowing your renewable electricity actually came from Irish wind farms rather than traded European certificates — Community Power is the most direct route.
Is There a Price Premium for Green Tariffs?
In Ireland in 2026, the honest answer is: not meaningfully. Renewable generation now accounts for the majority of Ireland's electricity output, so green tariffs are not a niche product any more. Most suppliers price their green options within 1–3% of their equivalent standard tariff.
The more significant price variable is still the new customer discount — which runs at 20–35% across suppliers. A green tariff with a strong new customer discount will almost always be cheaper over 12 months than a standard tariff without one. Optimising for the discount tier matters more than optimising for green vs. standard.
Do Green Tariffs Reduce Your Carbon Footprint?
The GO certificate model means your individual consumption is matched with renewable generation on a national accounting basis. It does not mean your kettle runs on wind at the moment you boil it — the grid doesn't work that way. What it does mean is that for every kWh you consume under a green tariff, a renewable generator somewhere on the Irish grid was paid for that output, increasing the economic case for more renewable investment.
Ireland's Climate Action Plan targets 80% renewable electricity by 2030. Demand for green tariffs creates a direct market signal for that investment. Whether or not the physical electrons are renewable, the financial flow is real.
Finding the Best Green Tariff for Your Home
The cheapest green tariff for your home depends on two numbers: your annual kWh and whether you have a smart meter (which unlocks night-rate green tariffs). GoSwitch compares all green tariffs across all seven Irish suppliers, ranked by real annual cost — not headline discount percentage.
Enter your annual kWh to see the ranked results. If you don't know your usage, 4,200 kWh is the Irish household average — a reasonable starting point. The results show unit rate, standing charge, and projected annual cost for every green tariff on the market. Switch takes about 15 minutes, and supply is never interrupted.