How to Apply for Warm Home Discount Online

How to Apply for the Warm Home Discount Online: A Supplier-by-Supplier Guide

There is no single government website where you apply for the Warm Home Discount online. Instead, each participating energy supplier runs its own online application system, and which one you need depends entirely on who supplies your electricity and which eligibility group you fall into. This guide walks through exactly where to go and what to expect for each major supplier.

Important: InstantGrant is an independent grant information and application-support service. We are not the UK government, Ofgem, or any energy supplier. We do not process Warm Home Discount applications ourselves. All portal details on this page are verified against each supplier's current guidance as of 12 September 2026. Supplier websites and portal names can change, so always navigate to your supplier's official site directly rather than clicking links from an email or text you were not expecting.

Do You Actually Need to Apply Online

In England and Wales, most eligible households receive the £150 discount automatically without visiting any online portal at all, since the government matches your benefit records with your energy supplier's customer database directly. You would only need to apply online in England or Wales if your supplier asks you to confirm details after this automatic match did not go through, typically because your name was not on the electricity bill by the qualifying date. In Scotland, the Broader Group requires an online application through your specific supplier's portal, since Scotland's automatic Core Group matching covers a narrower set of households than in England and Wales.

Supplier-by-Supplier Online Application Process

Once you know you need to apply, the process happens entirely on your supplier's own website rather than through GOV.UK or Ofgem directly.

British Gas

British Gas runs its Warm Home Discount information and application confirmation through a dedicated section of its main website, accessible once you log into your online account. For the Scotland Broader Group, British Gas opens its online application window separately each year and explicitly warns that places are limited, so applying as soon as the window opens matters more with British Gas than with some other suppliers.

EDF

EDF handles Broader Group applications through its own dedicated online form, which typically opens later in the year, around September, and closes once the following winter's allocation is confirmed. If EDF's application window shows as closed, this generally means you need to wait for the next scheme year's window to open rather than an error with your account.

E.ON Next

E.ON Next manages its Warm Home Discount process through its own customer portal, where eligible customers can check status and, where required, submit confirming documentation online rather than by post. Log into your E.ON Next account directly rather than searching for a separate application site, since the process sits inside your existing account dashboard.

OVO

OVO's online process distinguishes clearly between its Core Group, which requires no application, and its Broader Group, where eligibility criteria are published on OVO's website when applications open later in the scheme year. OVO's Extra Support online resources also sit alongside the Warm Home Discount section for customers who need broader financial help beyond the one-off discount.

Octopus Energy

Octopus Energy's online guidance is unusually detailed about house moves and supplier switches affecting your application, specifically noting that if you were with a different supplier on the qualifying date in August, you need to contact that previous supplier's online system rather than Octopus, even if you have since switched. This is one of the more common points of confusion in online applications generally, not just for Octopus customers.

ScottishPower

ScottishPower's Broader Application process for Scotland typically opens in the autumn and is accessed through its main customer website, with the same first-come-first-served urgency that applies across most Scottish supplier portals given the fixed number of places available each scheme year.

What You'll Need Before You Start the Online Form

Regardless of which supplier's portal you use, having the right information ready before you start prevents the application from stalling partway through.

• Your electricity account number, found on a recent bill

• Confirmation that your name is on the electricity bill, since the eligible person must be named on the account

• Details of the qualifying benefit you or your partner receive

• In some cases, a recent benefit award letter or proof of income if the automatic match could not confirm eligibility

Common Online Application Problems

The portal says you're not eligible when you think you are. This most often happens when your name is not on the electricity bill, or when you moved supplier close to the qualifying date in August and the wrong supplier is checking your record. Contact whichever supplier you were with on the specific qualifying date, not your current one, if these differ.

The application window appears closed. Broader Group windows open and close within a single scheme year and do not reopen until the following winter. If you missed it, the practical next step is checking your eligibility for other support such as ECO4 or the Warm Homes Local Grant while you wait for the next application window.

You can't log into your account to apply. Every major supplier's Warm Home Discount online process sits behind your existing customer account login, not a separate public form. If you have never registered for online account access with your supplier, you will need to do that first before the Warm Home Discount section becomes accessible.

Frequently Asked Questions

Is there one government website to apply for Warm Home Discount online? No. Each participating supplier, including British Gas, EDF, E.ON Next, OVO, Octopus Energy, and ScottishPower, runs its own separate online application system rather than a single central government portal.

Do I need to apply online if I live in England or Wales? Usually not. Most England and Wales households receive the £150 discount automatically. You would only need an online application if your supplier specifically asks you to confirm details after an automatic match failed.

Why does the online form say my application window is closed? Broader Group application windows, most relevant in Scotland, open and close within a single scheme year. A closed window means you need to wait for the following winter's window to reopen rather than a problem with your submission.

What do I need ready before applying online? Your electricity account number, confirmation your name is on the bill, details of your qualifying benefit, and in some cases a benefit award letter if automatic verification is not possible.

I switched energy supplier. Which online portal do I use? Use the online system belonging to whichever supplier you were with on the specific qualifying date in August, not your current supplier, if the two are different.

How InstantGrant Can Help

Working out which supplier's online system applies to your situation, especially after a house move or supplier switch, can be confusing when each company runs a completely separate process. InstantGrant is an independent grant information and application-support service that can help you understand which route fits before you start filling in any online form.

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

Check your eligibility at instantgrant.co.uk