Public HIFLD transmission lines and substations across the six New England states, drawn with ISO-NE's load zones. Orient a site, county, or offshore-wind landing against the network geography, then open the same layers on the live map.
The transmission-line and substation features in the HIFLD public inventory, placed beside ISO New England's eight load zones on Ask the Grid's interactive map.
New England's load centers sit in southern New England around Boston, Connecticut, and Rhode Island, while much of its new supply — northern wind, Canadian imports, and offshore wind landing on the coast — has to travel to reach them. Read the public line and substation geography against the load zones to see where a site sits on those paths, then take the electrical questions to ISO-NE's planning and interconnection process.
The transmission lines and substations published in the HIFLD public inventory, drawn across ISO-NE's load zones. It is geographic reference data — the operational network model, line ratings, and real-time flows stay with ISO-NE and the transmission owners.
It shows where the public network geography runs, which is the starting point. Whether a specific point of interconnection works is settled by ISO-NE's interconnection studies and the transmission owner.
Yes. The linked Ask the Grid catalog page documents the HIFLD transmission-line source, schema, and coverage.
Yes. It opens the live ISO-NE workspace with the same transmission, substation, and zone layers and the same viewport shown on this page.