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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