Electricity suppliers sell electricity to electricity customers (domestic, commercial, or industrial) utilising the electricity system which is operated by EirGrid at transmission level and by ESB Networks at distribution level.
To become a supplier of electricity in Ireland you need to:
Use of System Charges
Suppliers with demand customers connected to the transmission system are subject to Transmission Use of System (TUoS) charges. Suppliers with demand customers connected to the distribution system are similarly subject to Transmission Use of System charges in addition to Distribution Use of System (DUoS) charges.
Please refer to the Transmission Use of System Charges page for further information on the above and links to the current version of the Statement of Charges document.
Suppliers who have signed a Use of System Agreement are required to comply with the Grid Code. The Grid Code is a technical framework document approved by the CER, which establishes standards by which the TSO and parties connected to the transmission system will meet in order to provide a safe, secure and reliable grid system. Please refer to the Grid Code page for further information and to access the Grid Code.
Meter Registration System Operator
Meter Registration System Operator (MRSO) is a "ring-fenced" function within ESB Networks responsible for the Change of Supplier process and the processing/aggregation of meter data required to support Trading & Settlement in the competitive electricity market. The MRSO contact details can be found on their website.