They are each uniquely structured, but are generally comprised of between three and seven members, who may be elected or appointed, with authority granted by either the state legislature or state constitution to balance policies and preferences related to reliability, affordability. They are each uniquely structured, but are generally comprised of between three and seven members, who may be elected or appointed, with authority granted by either the state legislature or state constitution to balance policies and preferences related to reliability, affordability. Utilities provide basic public infrastructure-related services, such as electricity, water, natural gas, waste disposal and sewage treatment, for individual consumers and businesses in both urban and rural areas. These companies can be privately owned (investor-owned), publicly owned or. This network connects thousands of power plants to hundreds of millions of electricity customers across the country. The source of the electricity you buy varies. Other utilities buy electricity from. This report presents an extended review of the situation of the European electricity Distribution System Operators after the first exercise undertaken in 2016. Seven ISOs include California ISO, New York ISO, Electric Reliability Council of Texas, Midcontinent Independent System Operator, ISO New England, Alberta Electric System Operator, Independent Electricity System Operator.