Electricity Pool

Refers to the trading of electricity between generators, suppliers and, on rare occasions, large electricity customers.

Electronic Data Interchange (EDI)

The Electronic Data Interchange, or EDI, transfers large quantities of billing data through a secure channel, and gives customers the option to receive their bill in a specific format. This is often used by large organisations looking to integrate their energy billing into their own budgeting system.

Emissions Trading Scheme (ETS)

The Emissions Trading Scheme is an EU-wide programme used for the trading of carbon dioxide and other greenhouse gas emissions, as well as carbon credits.

Energy Charter Treaty (ECT)

The Energy Charter Treaty is a multilateral framework for energy cooperation, unique under international law. The treaty is designed to promote energy security through the use of open and competitive energy markets, while adhering to the ethics of sustainable development. 

Entry Point

The point at which gas is delivered into the National Transmission System, i.e. the gas terminal.

Estimated Annual Consumption (EAC)

This is the estimated electricity that will be consumed on an annual basis.

Estimated meter reading

Estimated meter readings are done by energy suppliers when they haven’t got an actual meter reading. This bill will reflect your estimated energy consumption for a defined period. By taking regular meter readings, your supplier will bill you more accurately.

European Emissions Trading Scheme

The European Emissions Trading Scheme operates in 31 countries, and forms the cornerstone of the EU’s climate change policy. The scheme works on the ‘cap and trade’ principle, whereby within the cap, organisations receive and purchase emissions allowances and trade them with one another as required.

Exit Zone

A geographical area in which a gas off-take and supply point is located.