Feed-in-tariff (fit)

The Feed-in-Tariff, or FiT, scheme, is designed to promote the uptake of small-scale renewable and low-carbon electricity generation technologies. You can apply to get payments from your energy supplier if you generate your own electricity, for example with solar panels or a wind turbine.

For generators, the scheme stopped accepting new applications after 31 March 2019. Find out more here.

The scheme requires electricity suppliers to pay into a fund, to cover the costs of those who produce energy under the scheme. The cost is then passed onto all electricity customers through their invoices. Amounts charged depend on volume consumed.


Gas meter point reference number (mprn)

A Gas Meter Point Reference Number, or MPRN, is the unique identifying number for the gas meter at your property. The MPRN should be printed on your gas invoice and consists of between 6 and 10 digits. If the MPRN starts with 74 to 77 and is 8 digits long, then the gas is piped through an Independent Gas Transporter.

Gas transporter (gt)

A Gas Transporter, or GT, is responsible for maintaining a gas supply network. They may also be asked by the Supplier via the Shipper to provide a meter for the business’ use. This requires a GT licence.

Gas charges

Gas charges are added to a gas invoice by the government and third parties such as distribution companies. There are a variety of non-commodity charges attached to gas such as System/Customer Capacity, Exit Charges and Fixed costs.


What’s an invoice period?

An invoice period is the period of energy usage being charged for. Most invoices will be for a calendar month.