Terms & conditions


Free cooler bag

One cooler bag per household, subject to availability. No cash alternative. Only applicable to new customers entering into a new residential contract with npower electricity once supply has commenced. Delivery will be within 8 weeks from the date of supply. Coolbag may vary from the one shown.

£100 Dual Fuel Monthly Direct Debit Annual Discount

After you’ve been with npower and paid by monthly Direct Debit without a break for 12 months, you’ll receive a discount off your energy bill. Stay with us and continue to pay in this way and you’ll get an £100 annual discount if you buy both electricity and gas, or £20 if you buy just one fuel.

Telephone calls

Calls may be recorded and monitored for training and security purposes.

100% renewable electricity

For every unit of electricity used, npower will purchase a unit of renewable energy to be fed into the electricity network. The electricity you receive remains the same. Usage is estimated until year end when annual consumption data is checked and we confirm the correct amount of renewable energy has been purchased.

At No Extra Cost

Excludes internet, capped or fixed tariffs

£15 Investment in Low & Zero Carbon Technologies

£15 per fuel invested in low and zero carbon initiatives and related educational activities (inclusive of marketing and promotional costs for marketing of The National Trust Green Energy products) for customers entering into a residential contract with npower for National Trust Green Energy electricity, once supply by npower has commenced.

Annual Payment For Every Year You Remain a Customer

£5 per fuel invested in low and zero carbon initiatives and related educational activities (inclusive of marketing and promotional costs for marketing of The National Trust Green Energy products), £10 invested in renewable technologies on National Trust properties. Payable every year a customer stays with National Trust Green Energy for the duration of the National Trust and npower alliance.

npower is a registered trademark and the trading name of Npower Northern Limited and associated companies. Electricity is supplied by Npower Northern Limited (Registered in England and Wales, No. 3432100) who supply electricity as an agent for Npower Northern Supply Limited (Registered in England and Wales, No. 2845740).

Registered office: Windmill Hill Business Park, Whitehill Way, Swindon SN5 6PB. Electricity/gas supply contracts will not be with either National Trust Enterprises Limited or The National Trust.