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.

Capped price

A tariff which guarantees that the price per kWh for gas/electricity will not rise beyond a certain level for a fixed period.


The presentation of unit rate, or a fixed monthly/daily amount that you pay your electricity/gas supplier for maintenance and other costs, such as maintaining connection to the power network.

Code of practice

A set of guidelines and principles to be followed by members of some profession, trade, or group. In this case, energy suppliers.

Cooling- off period

Usually refers to a period of time after the consumer has entered into a contract or signed up to a tariff during which they can reverse their decision without incurring any cancellation fees.

Core tariff

The charges for supply of electricity/gas combined with all other terms and conditions that apply, or are in any way linked, to a particular type of contract for the supply of gas/electricity to a domestic customer excluding certain matters such as dual fuel discounts, variations in charges relating to payment method, appropriate surcharges and optional additional services or products.

Cross subsidise

The part financing of one product or activity by another.