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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.
Balancing Pool is a Calgary, AB-based company in the Energy and Utilities sector.
Taunton Municipal Lighting Plant is a Taunton, MA-based company in the Energy and Utilities sector.
NRG Energy, Inc. is a large American energy company, dual-headquartered in West Windsor Township, New Jersey, near Princeton and Houston, Texas. In late 2005, NRG Energy bought Texas-based Texas Genco from a group of private equity firms for roughly $5.9 billion. In May 2009, NRG entered this market by acquiring the retail operations of Reliant Energy. NRG's retail service serves 1.6 million customers in Texas. The retail operations continue to operate under the Reliant Energy name while the remainder of the former Reliant Energy became RRI Energy.
Northern Utilities Inc is a Portland, ME-based company in the Energy and Utilities sector.