• Distribution System Operator (DSO): the company that distributes electricity over the poles and wires that make up the electricity grid and owns the meter in customers’ homes.

Check the list of distribution system operators.

• Supplier: a company that buys electricity from producers and sells it to consumers with whom concludes electricity supply contracts. It charges market prices.

Check the list of suppliers. 

• Supplier of last resort (SoLR): a company that supplies electricity to consumers not on the free market and provides supply whenever necessary. It applies the prices set by ERSE.

Check the list of suppliers of last resort (SoLR). 

• Switching Logistics Operator (SLO): the body that deals with changes of supplier. This is currently the Agency for Energy (ADENE)

• Customer (consumer): the person to whom the electricity supply service is provided.