The Eastern Interconnection is one of the two major alternating-current (AC) electrical grids in the North American power transmission grid . The other major interconnection is the Western Interconnection . The three minor interconnections are the Quebec , Alaska , and Texas interconnections.
5-530: The SERC Reliability Corporation ( SERC ) is responsible for ensuring a reliable and secure electric grid across 16 southeastern and central states. The SERC region lies within the Eastern Interconnection , and includes the states of Alabama , Georgia , Mississippi , Missouri , North Carolina , South Carolina , Tennessee , and portions of Arkansas , Illinois , Kentucky , Louisiana , Oklahoma , Texas , Virginia , and Florida . SERC
10-473: Is a regional entity authorized to perform this important responsibility under a Federal Energy Regulatory Commission approved delegation agreement with North American Electric Reliability Corporation (NERC) . SERC was originally formed on January 14, 1970 by the functional merger of four smaller regional reliability entities: the CARVA Pool, Tennessee Valley Authority (TVA) , Southern Company (SOCO) and
15-676: Is tied to the Western Interconnection with six DC ties, to the Texas Interconnection with two DC ties, and to the Quebec Interconnection with four DC ties and a VFT. In 2016, National Renewable Energy Laboratory simulated a year with 30% renewable energy ( wind and solar power ) in 5-minute intervals. Results show a stable grid with some changes in operation. The North American Electric Reliability Corporation (NERC) reported in 2008
20-501: The Atlantic coast (excluding Quebec ), south to Florida , and back to the western Great Plains (excluding most of Texas ). Interconnections can be tied to each other via high-voltage direct current power transmission lines ( DC ties ), or with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies of each side. The Eastern Interconnection
25-647: The Florida Electric Power Coordinating Group (FEPCG). SERC's offices are located in Charlotte, North Carolina. Eastern Interconnection All of the electric utilities in the Eastern Interconnection are electrically tied together during normal system conditions and operate at a synchronized frequency at an average of 60 Hz. The Eastern Interconnection reaches from Central Canada eastward to
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