Key terms and issues explained

Mae’r dudalen yma ar gael yn Gymraeg.

On this page you will find a range of key terms explained for business energy. Please click on a letter below to be taken to a list of terms and on "show" to read the explanation.


A tariff for which the supplier can amend the standing charge / unit rate(s) at its discretion.


An amendment to the terms and/or conditions (including price) of a consumer’s energy supply contract.