Power Grid Operators - GO15 GO15 Skip to content About us Members News Events Activity Technical Work Webinars Power Grids Outlooks World Power System Review Members login Close Search Members login GO15 is the association of the Very Large Power Grid Operators About us News and events See all August 10, 2026 ONS conducts technical visits to independent system operators in the United States August 4, 2026 CAISO releases its first combined Western Energy Markets Quarterly Benefits Report 2026 GO15 annual meeting Washington DC, USA November 9, 2026 GO15 Member PJM Interconnection organizes the 2026 GO15 Annual Meeting, taking place from November 9 to 12 at the Willard InterContinental in Washington DC. This event will also include a Forum on “Powering Global Data Center Demand”. More information August 10, 2026 ONS conducts technical visits to independent system operators in the United States August 4, 2026 CAISO releases its first combined Western Energy Markets Quarterly Benefits Report November 9, 2026 2026 GO15 annual meeting Washington DC, USA See all Members map Brazil | ONS China | CSG China | SGCC France | RTE Greece | IPTO Gulf States | GCCIA India | GRID-INDIA Italy | Terna Japan | TEPCO Russia | SO UPS Saudi Arabia | National Grid SA South Africa | Eskom NTSCA South Korea | KPX Switzerland | SwissGrid USA | CAISO USA | ERCOT USA | MISO USA | PJM Interconnection