Glossary

• Energy Price Adjustment (EPA) Every non-domestic bill contains an Energy Price Adjustment (EPA) to reflect price changes in the wholesale electricity market. EP...
• Maximum demand In larger supplies the metering records the average kVA during each 30 minute period, when it is called Maximum Demand.
• kVA This is the ‘apparent power’ of a supply. It is calculated by multiplying the voltage (volts) by the current (amps). F...
• Availability Charge This is a monthly charge for providing and maintaining a suitably sized supply for you. It is based on your Chargeable Service Cap...
• Chargeable Service Capacity (CSC) This is the power rating your Availability Charge is based on. It is based on the maximum demand recorded during the year and is r...
• Maximum Import Capacity (MIC) This is the maximum power rating of your supply recorded by the network operator, NIE Networks. If you exceed this you will incur ...
• Single phase supply Most domestic premises have a single phase supply, with a power rating of 23kVA.
• Three phase supply Most commercial premises have a three phase supply, with a power rating of 69kVA.

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