The Warm Home Discount is a government scheme that provides a discount to low-income households. An application has to be made every year. If you've already received your Warm Home Discount within the last 12 months, this will be reflected in your current balance. If you are eligible, it is run by your energy supplier, with a discount applied to your energy bill. Find out more about eligibility and which energy suppliers are part of the scheme https://www.gov.uk/the-warm-home-discount-scheme