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Grid Edge Checker
Trinity Solar CT · CT Energy Storage Solutions
ESS Training →
Battery / ESS

Is this address on the Grid Edge?

Grid Edge homes qualify for a $130/kWh enrollment incentive instead of $30/kWh, a 4× difference. Confirm it before you walk in. Pick the home's utility, find it on the map, then check the circuit below.

1 Quick check
Is the home next to a colored line?
Open the Eversource map, search the address, and look for a blue or red line on or beside the parcel.
Eversource Grid Edge mapOpens in a new tab. This map can't display inside the page, so it launches on its own.
Open the map →
How to read it
  1. Search the customer's address.
  2. A blue or red line on or next to the parcel = likely Grid Edge.
  3. Borderline, or two homes close together? Confirm the exact circuit in Step 2, since adjacent parcels can be on different circuits.
2 Confirm the circuit
Look up the parcel's circuit
For a definitive answer, enter the address in Eversource's Hosting Capacity Map, click the parcel, and read the circuit number from the popup.
Open full map in new tab →
How to read it
  1. Search the customer's address in the map.
  2. Click directly on the home's parcel.
  3. In the popup, find the Circuit field (e.g. 5R7 or 412M1).
  4. Type the zip and that circuit in Step 3 below.
1 Find it on the UI map
Is the home on a red line?
UI maps Grid Edge as red circuit lines. Search the address: if the home sits on or right beside a red line, it qualifies. The grid-edge circuits in the home's zip are listed in Step 2 as a guide.
Open UI map in new tab →
How to read it
  1. Search the customer's address.
  2. A red line on or next to the parcel = Grid Edge.
  3. The map is the authority for UI. The zip list in Step 2 is a guide to narrow the search.
3 Check Grid Edge status
Zip code + circuit number
Type the zip first. We'll show the Grid Edge circuits in that zip, then enter the parcel's circuit.
United Illuminating maps Grid Edge visually. This zip list is derived from UI's circuit map to narrow your search. The UI map above is the authority, so confirm the home sits on a red line.
Loading 2025 map data…
Save quick-reference card Official 2025 map (PDF)
The utility makes the final Grid Edge determination. Mapping is parcel-specific: adjacent parcels can be on different circuits. If a site is unclear, email energystoragesolutions@eversource.com to request verification.
Based on the 2025 Grid Edge map data (Eversource territory). Reviewed annually.