An investigation by ITV News has discovered that many charities are being charged too much on their energy bills.
Charities are entitled to a discount on VAT and the climate change levy that adds up to 20% of a bill.
Our research of more than 100 charities shows around a third don't know about it and believe they may be overpaying.
A treasurer at a village hall, which holds events for good causes, told ITV News energy companies should take responsibility on reducing power bills for registered charities.
Val Belton told ITV News: "I think it should be down to the energy companies to raise this question with you particularly when the bill is for Burpham Village Hall - they may think 'maybe that's a registered charity, I'll clarify whether they are'."
An ITV News investigation has revealed that many charities are overpaying on energy bills, but how can the organisations reduce their costs?
An investigation by ITV News has discovered that many charities are being charged too much on their energy bills.