Warm Home Discount

The Warm Home Discount scheme means £140 off your electricity bill if you are on certain qualifying benefits. If you receive the Guaranteed Element of Pension Credit you should receive this automatically. You may also qualify if you receive certain other means-tested benefits – but you won’t receive it automatically. If you think you might qualify, check your supplier’s website for details and how to apply.

https://www.gov.uk/the-warm-home-discount-scheme/what-youll-get