Explore substation capacity and interconnection queue data across every major Independent System Operator and Regional Transmission Organization in the United States.
PJM Interconnection
PJM Interconnection is the largest RTO in North America, managing the grid across 13 states and D.C. Home to Data Center Alley in Northern Virginia—the world's largest concentration of data centers.
Electric Reliability Council of Texas
ERCOT manages the Texas electrical grid, operating independently from the rest of North America. Known for deregulated markets, abundant renewables, and faster interconnection timelines.
California Independent System Operator
CAISO manages California's grid, the largest state economy in the US. Known for aggressive renewable mandates, complex regulations, and high power costs but also strong demand from tech giants.
Midcontinent Independent System Operator
MISO manages the grid across 15 Midwest and Southern states, from Minnesota to Louisiana. Known for low power costs, abundant wind energy, and emerging data center markets.
New York Independent System Operator
NYISO manages New York State's grid, from the dense load center of New York City to rural upstate regions. Known for high costs downstate, aggressive climate mandates, and strong financial services demand.
ISO New England
ISO-NE manages the grid across six New England states. Known for moderate costs, transmission constraints, strong biotech and tech demand, and limited new generation capacity.
Query any region's substation availability instantly via our Grid Capacity API. Find power before your competitors.