Which Energy Companies Offer the Warm Home Discount

Which Energy Companies Offer the Warm Home Discount in 2026/27

Not every energy supplier in the UK offers the Warm Home Discount, and if you're with a smaller or newer provider, it isn't always obvious whether you're covered. As of the 2023/24 scheme year, any domestic energy supplier with more than 1,000 customers is legally required to participate, which brought a longer tail of smaller companies into the scheme than most guides bother listing.

Important: InstantGrant is an independent grant information and application-support service. We are not the UK government, Ofgem, or any energy supplier. This list is verified against Ofgem and GOV.UK guidance as of 12 September 2026, but always confirm directly with your supplier, since participation and brand names can change between scheme years.

The Full List for 2026/27

The following 24 suppliers are confirmed to participate in the Warm Home Discount for the 2026/27 scheme year (England, Wales, and Scotland):

Why Some Suppliers Have Two Names on This List

A number of suppliers on this list operate a "white label" arrangement, where a licensed supplier partners with another brand to sell gas and electricity under its own name, while the licensed supplier handles the actual supply and regulatory obligations behind the scenes. This is why you will see British Gas listed alongside Scottish Gas, and Octopus Energy listed alongside EnergyCoop: if your bill shows one of these associated brand names, you are still covered by the Warm Home Discount through the parent supplier's participation.

The 1,000-Customer Rule

Before the 2023/24 scheme year, only suppliers with more than 250,000 domestic customers, later lowered to those with over 50,000, were compelled to participate, meaning many smaller suppliers sat outside the scheme entirely. From 2023/24 onward, that threshold dropped to 1,000 domestic customers, bringing companies such as Fuse Energy, Good Energy, and Square 1 Energy Ltd into mandatory participation. This is worth knowing if you switched to a smaller, newer supplier expecting them to be excluded, since the rule has changed significantly in recent years.

What If Your Supplier Isn't on the List

If your current supplier genuinely does not participate, either because they have fewer than 1,000 domestic customers or have chosen not to take part voluntarily, you cannot receive the Warm Home Discount through them for as long as you remain their customer. Your two realistic options are switching to a participating supplier ahead of the 23 August qualifying date for the following scheme year, or asking your current supplier whether they offer any equivalent support through their own hardship or Industry Initiatives fund instead, since some non-participating suppliers still provide comparable help outside the formal scheme.

Common Misconceptions

"Only the big six energy companies offer the Warm Home Discount." No. Since the 1,000-customer threshold was introduced, a much wider range of smaller suppliers, including Good Energy, Ecotricity, and Fuse Energy, are also required to participate.

"My supplier's name isn't on any list I've seen, so they must not participate." Check for white label arrangements first. Scottish Gas and EnergyCoop, for example, participate through their parent suppliers, British Gas and Octopus Energy respectively.

"If my supplier doesn't do the Warm Home Discount, there's nothing else available." Some non-participating suppliers offer their own hardship support outside the formal scheme. It's worth asking directly rather than assuming there is no help at all.

Frequently Asked Questions

What energy companies offer the Warm Home Discount in 2026/27? 24 suppliers participate, including British Gas, EDF, E.ON Next, OVO, Octopus Energy, ScottishPower, Utilita, and Utility Warehouse, alongside smaller suppliers such as 100Green, Ecotricity, Good Energy, and Fuse Energy.

Do all energy suppliers have to offer the Warm Home Discount? Only suppliers with more than 1,000 domestic customers are legally required to participate. Smaller suppliers below that threshold can choose not to take part.

My bill shows a brand name I don't recognise on the list. Am I still covered? Possibly. Some suppliers on the list operate under white label brands, such as Scottish Gas through British Gas or EnergyCoop through Octopus Energy, so check whether your brand is associated with a listed parent supplier.

What if my supplier isn't on the participating list at all? You won't receive the Warm Home Discount through them. Consider switching to a participating supplier before the next scheme year's qualifying date, or ask your current supplier about their own hardship support.

How InstantGrant Can Help

Understanding whether your specific supplier or brand is covered, especially with white label arrangements adding confusion, can take longer than it should. InstantGrant is an independent grant information and application-support service that can help you understand your position before you contact your supplier.

We are not the UK government, Ofgem, or any energy supplier. We do not process applications and we do not guarantee any outcome.

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