Cheapest Gas in Ireland (2026) – Gas Only or Dual Fuel?

Looking for the cheapest gas in Ireland in 2026? The lowest gas rate isn’t always found in a gas-only plan. In many cases, bundling gas and electricity together in a dual fuel deal can offer stronger overall discounts.

This guide explains when gas-only works best, when dual fuel is cheaper, and how to compare both options properly.

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Is Gas-Only or Dual Fuel Cheaper in Ireland?

In Ireland, gas discounts are often higher when bundled with electricity in a dual fuel tariff. However, that doesn’t automatically mean dual fuel is always the cheapest option.

The best choice depends on:

Your annual gas usage
Your electricity tariff
Standing charges
Contract timing
Available introductory discounts

If you already have a strong electricity deal, switching gas alone may make sense. If both fuels are out of contract, dual fuel can often produce stronger overall savings.

When Gas-Only Makes Sense

You are already on a competitive electricity rate
Your gas usage is relatively low
A supplier is offering a short-term strong gas discount
You want maximum flexibility between suppliers

Gas-only switching can work well for households that actively review their energy every year.

When Dual Fuel Is Usually Cheaper

Both gas and electricity contracts have expired
You use moderate to high levels of both fuels
A supplier is offering enhanced bundle discounts
You prefer one bill and one supplier

In many cases, the additional bundle discount makes dual fuel cheaper overall.

How Much Can You Save on Gas in 2026?

Households switching from out-of-contract gas rates can often save between €200 and €500 per year depending on usage levels.

If switching both gas and electricity together, total savings may exceed €800–€1,000 per year in some cases.

What Affects Gas Prices in Ireland?

Wholesale gas market prices
Standing charges
Supplier discount structures
Contract length
Seasonal demand

Gas prices can fluctuate, which is why reviewing your tariff annually is important.

How to Compare Gas Deals Properly

When comparing gas tariffs, don’t focus on headline discount percentages alone.

Instead compare:

Gas unit rate (c/kWh)
Standing charge
Total projected annual cost
Discount expiry date

If you’re also reviewing electricity, check our guide to Cheapest Electricity in Ireland (2026).

Gas-Only vs Dual Fuel: Quick Decision Guide

Gas-Only May Suit You If:

Your electricity deal is already competitive
You want flexibility to switch fuels separately
You monitor tariffs annually

Dual Fuel May Suit You If:

Both contracts are ending
You want maximum discount potential
You prefer simple billing

How WeSwitchU Helps

WeSwitchU compares gas-only and dual fuel options side-by-side to help you identify the best value for your household.

Full market comparison
Guidance on gas-only vs dual fuel
No interruption to supply
Ongoing review support

Find the Cheapest Gas or Dual Fuel Deal Today

Frequently Asked Questions

Is gas cheaper in a dual fuel bundle?

Often yes, but not always. Bundle discounts can increase savings, but comparing full annual cost is essential.

Can I switch gas without switching electricity?

Yes. Gas and electricity contracts are independent and can be switched separately.

Will switching gas interrupt my supply?

No. Your gas supply continues without interruption.

How often should I review my gas tariff?

At least once per year, before your discount expires.

Ready to Compare?

If you haven’t reviewed your gas tariff recently, you could be overpaying.

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Call 01-9125161 or email support@weswitchu.ie for assistance.