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On May 30, 1979, by virtue of Law #57, the Puerto Rico Water Resources Authority changed its name to the Puerto Rico Electric Power Authority. The change was due to new circumstances, because water or fuentes fluviales no longer were the principal source of electricity on the Island. In 1981 PREPA acquired the electric system owned by the Municipality of Cayey. In this way came about the completion of the consolidation of all electric systems in Puerto Rico under one sole entity.
Boonville Natural Gas is a Boonville, IN-based company in the Energy and Utilities sector.
Consolidated Electric Coop is a Mexico, MO-based company in the Energy and Utilities sector.
Wisconsin Energy Corporation serves more than 1.1 million electric customers in Wisconsin and Michigan's Upper Peninsula and more than 1 million natural gas customers in Wisconsin through its utility subsidiary, We Energies. Other subsidiaries are We Power, which designs, builds and owns electric generating plants; and Wispark, LLC, which develops and invests in real estate, industrial/office buildings and urban redevelopment projects.
Perennial Public Power District is a York, NE-based company in the Energy and Utilities sector.