Cheapest Gas Prices in Ireland

Gas Prices in Ireland Compared 

Bord Gais Energy (who are owned by UK based firm Centrica) now have seven competitors for the supply of Natural Gas to households in Ireland. The other gas suppliers are Flogas,  SSE Airtricity, Electric Ireland, Energia, Iberdrola, Prepay Power and Panda Power.

Which supplier has the cheapest gas prices in Ireland ?

We have compared the gas prices on offer for households that are currently on Bord Gais Energy’s standard rates.


Cheapest Provider
(Over 1st Year)
2nd Cheapest Bord Gais
Standard Rates
Very High (20000 kWh) Iberdrola €1090Flogas €1115€1328
High (15000kWh) Iberdrola €844Flogas €849€1020
Medium (11000 kWh)Flogas €637Iberdrola €647€774
Low (5000 kWH)Iberdrola
Flogas €318€404
Very Low (3500 kWH)Iberdrola
Flogas €239€313

Very High Gas Usage

A large household with more than 5 or 6 occupants using gas for cooking, heating and hot water could use as much as 20000 kwh of gas a year. This is almost double the average usage.

The lowest-priced deal for new customers using this amount of gas is available from Iberdrola – working out at €1090 in year one. (Includes April price increase). If you are already with Bord Gais you will be paying €1328 in year one

Currently, the second-best switching deal for very high electricity usage homes is available from Flogas .
Their offer will work out at €1115 in the first year. This includes the April price increase.

High Gas Usage

Gas consumption of 15000 kwH per year might be typical for high usage households. Generally speaking, gas usage will be higher than average in larger homes with four or more occupants that use gas for both heating and hot water.

In April 2021 the best switching deal for high gas usage homes is with Iberdrola. Their tariff works out at €844 in year one , compared to €1020 with staying with Bord Gais Energy.

The next best switching deal for high usage households is with Flogas. Their cheapest deal works out at €849 in year one

Average Gas Usage

For medium-sized homes that use gas to provide heating and most hot water, an annual gas usage of about 11000 Kwh a year would be typical. (This is the national average usage figure.)

Flogas now has the cheapest gas deal for switchers. Their deal works out at €637 in year one. (For average usage).

Iberdrola has the second cheapest gas deal – which will work out at €647 over 12 months for this usage.
This figure includes the April price increase.

Best for Low Gas Usage :

Smaller households will obviously use less gas. Typical usage for a 1 or 2 person household might be 5000kwh per year.

In April 2021 the best switching deal for low gas usage homes is with Iberdrola.
Their €115 cashback deal works out at €289 in year one compared to €404 with staying with Bord Gais Energy

Flogas has the second cheapest gas deal for low usage. It eorks out at €308 in year one.

Electric Ireland’s cashback deal works out at €676 over the first year and this is the second cheapest deal.

Very Low Gas Usage

For single occupancy households – gas usage may be as low as 3500 Kwh a year.
On Bord Gais Energy standard rates this would work out at €313 in year one.
Switching to Iberdrola’s €115 cashback deal would cost €200 in year one – a saving of around 30% .

For Households with Average Gas Usage, these are the 3 cheapest switching options if you are on Bord Gais Energy’s standard rates.

First Year
Cost 11000

in Year


(Green Future)
Electric Ireland
Bord Gais Std Rate€7740€1016.02

As you can see from the gas price comparison above –  a Bord Gais Energy customer on standard rates not paying by direct debit, using 11000 kWh of gas a year would save €138 over the first year on their gas bill by switching to Flogas

If you are not already with Bord Gais for gas – they have a good discounted offer for switchers that works out at €595 in year one.

All figures include VAT, standing charges and carbon tax. Rounded to the nearest Euro. Carbon tax
Prices above are for new customers paying by direct debit.

Gas Prices Checked April 8th 2021 and have been adjusted to take into account April price increases.

If you went with the Prepaid option from Prepay Power – it would cost you €837 over the 12 months. That’s €201 more expensive than the cheapest gas deal !

More Tips

Tip: All households also use electricity – and you can usually get a better overall deal if you get both your gas and electricity from the same supplier.
See our page on Dual Fuel Prices Compared

Be aware that the Irish energy comparison sites don’t all include cashback offers when calculating the total annual charges.  So, don’t assume that the supplier they show at the top of their list will actually be the best deal for you. You might need to add on any cashback offers to work out the total savings over 12 months. (We have done that for you in the table above)

12 months after switching gas supplier you should always look at switching again to get the best deal. It only takes a few minutes .

Gas Registered Fitters

See our page on Cheapest Electricity Deals in Ireland here.

Some energy providers often have discounts or promotional codes – check our Discount Alert page for any current codes.

See More Top Money Saving Tips