Regional Transmission Organizations
ISO / RTO Council Members
Alberta Electric System Operator AESO , headquartered in Calgary , AB
California ISO CAISO , headquartered in Folsom , CA
Electric Reliability Council of Texas ERCOT , headquartered in Austin , TX
ISO New England ISONE , headquartered in Holyoke , MA
Midcontinent ISO MISO , headquartered in Carmel , IN
New York ISO NYISO , headquartered in Rensselaer , NY
PJM Interconnection PJM , headquartered in Valley Forge , PA
Ontario Independent Electricity System Operator IESO , headquartered in Toronto , ON
Southwest Power Pool SPP , headquartered in Little Rock , AR
Source : www . isorto . org
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