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. (Prices include the recent Carbon Tax increase)


Cheapest Provider
(Over 1st Year)
2nd Cheapest Bord Gais
Standard Rates
Very High (20000 kWh) Iberdrola €1123Flogas €1145€1358
High (15000kWh) Iberdrola €869Flogas €872€1043
Medium (11000 kWh)Flogas €653Iberdrola €665€791
Low (5000 kWH)Iberdrola
Flogas €325€412
Very Low (3500 kWH)Iberdrola
Flogas €243€318

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 €1123 in year one. If you are already with Bord Gais you will be paying €1358 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 €1145 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 €869 in year one , compared to €1043 with staying with Bord Gais Energy.

The next best switching deal for high usage households is with Flogas. Their cheapest deal works out at €872 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 from Bord Gais Energy. Their deal works out at €653 in year one. (For average usage).

Iberdrola has the second cheapest gas deal – with a 29% discount which will work out at €665 over 12 months for this usage.

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 €298 in year one compared to €412 with staying with Bord Gais Energy

Flogas has the second cheapest gas deal for low usage. It eorks out at €325 in year one.

Very Low Gas Usage

For single occupancy or well-insulated households – gas usage may be as low as 3500 Kwh a year.
On Bord Gais Energy standard rates this would work out at €318 in year one.
Switching to Iberdrola’s €115 cashback deal would cost €206 in year one – a saving of around 30% .

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

Gas Prices Checked May 1st 2021

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 Bundles 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