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Eversource Energy (CT)

Connecticut Utility Interconnection & net metering rules
Net Metering Allowed1
NEM TypeMonthly
Supply Side Taps Allowed1
Line Taps Allowed1
Load Taps Allowed1
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
1
NEM Type
Monthly
TOU Utility
0
Post Solar Billing Method
Net Metering
Rebates Offered
0
Deregulated
0
Allows Standby
0

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Supply Side Taps Allowed
1
Line Taps Allowed
1
Load Taps Allowed
1
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
0

System size & offset

System Size Restrictions
25
System Size Restriction Type
AC kW
System Size Battery Included
0
System Size Includes Existing Systems
1
Offset Type
Combination
Offset Value
100
Offset Calculation Basis
Historical
Offset Calculation Period
60
Industry Standard Watts Sqft
2
System Offset Notes

Projects must be sized so that system’s expected annual production does not exceed the highest annual consumption over any 12-month period within the past 5 years by more than 5% for the Customer of Record’s existing Revenue Meter plus the expected kWh for any planned addition of up to two electric vehicles and a whole home heat pump.


Allowances (Does not require proof by the utility)

  • Electric Vehicle (per vehicle, maximum of two): 3,285 kWh 
  • Whole-Home Air Source Heat Pump: 3,608 kWh
  • Whole-Home Ground Source Heat Pump: 2,458 kWh 


In scenarios where less than 12 months of historical electric usage is available for the premise with its current occupant as the Customer of Record (i.e., an existing home that was purchased and the Customer of Record has resided there for 8 months), the system may be sized up to a maximum of 9 kW AC nameplate capacity without consideration of the limited available electric usage. Such systems may exceed 9 kW AC by an amount consistent with any planned future electrification measures.


For projects at new construction homes, systems may be sized up to 9 kW AC without including an energy model with the application. If the system is sized larger than 9 kW AC, a load justification is required.


Projects must not exceed 25kW AC as measured by the Inverter Nameplate Capacity of the Qualified System’s inverter. More than one Qualified Project may be located at a single one-to-four family property, however the total nameplate AC capacity for all qualified systems may not exceed 25kW. Co-located or paired energy storage system capacity does not count towards the 25 kW AC cap of Residential Renewable Energy Solutions.

Offset Calc Tool
PV Watts

Metering & disconnect

Production Meter Required
Yes
Production Meter Position
Inv-PM-Disco-POI
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Utility Disconnect Switch
Allowed Meter Adapter
None

Plans & docs

Electric Service Reqs

Will require a meter relocation whenever the utility meter is located on the interior, or in any cabinets

Install Reqs

Battery ================= Each battery must have its own Disconnect.

Placards

If the AC Disconnect cannot be within 10 feet of, in visible sight of, and on same wall as the Revenue Meter, a request for a variance must be made to Eversource. If a variance is granted, then you must placard the Utility Meter stating that there is solar generation on site, and show the location of the AC Disconnect. In addition, you must placard the AC Disconnect stating that it is for solar generation.

Meter Num Req SLD 3LD
1
ESID Num Req SLD 3LD
0
Site Plan Notes

“AC Disconnect is within 10 feet of, in visible sight of, and on same wall as the Revenue Meter.”

Electrical Diagram Notes

“AC Disconnect is within 10 feet of, in visible sight of, and on same wall as the Revenue Meter.”

Rate Schedule Link
link
Website
link
Phone
(800) 286-2000

Other details

Restrict Inspection
1
Revision Required
1
Mod Swap Requires Planset
1
Address ID
133043
Express Planset Eligible
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Eversource Energy (CT) before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.