What Con Edison asks for
- Requests for new or additional service go through Con Edison's Project Center (Blue Book 2026, p. 8).
- The final service design is developed after Con Edison receives the work request and/or load letter with details of the building's entire new or existing load (p. 35).
- Service characteristics: 1-phase 120/240 V, 1-phase 120/208 V or 3-phase 120/208 V (p. 11); minimum service three-wire, 100 amps (p. 33); outdoor meter on 1, 2 and 3 family homes (p. 7).
Source: Con Edison, Specifications for Electric Installations ("Blue Book"), 2026 edition, revised May 2026.
What we give you
- The NEC Article 220 calculation for the whole building, both methods, with every appliance, heating and cooling unit and EV charger listed
- Each apartment feeder on multifamily buildings
- The connected and demand loads your electrician or expediter needs for the load letter
- Notes on the Con Edison rules that apply to your building (meter location, voltage, electric-heat conversions)
We prepare the calculation; your licensed electrician or expediter files with Con Edison.
Get the numbers for your load letter. Load calc, reviewed: $197, fixed price.
Start the detailed calc Free quick calcQuestions
What is a Con Edison load letter?
A summary of the building's new and existing electrical load that Con Edison uses, with the work request, to design the service (Blue Book 2026, p. 35).
Do you file with Con Edison?
No. We prepare the load calculation; your licensed electrician or expediter files the request through Con Edison's Project Center.
How fast can I get the calculation?
Tell us your deadline when you send the project. Express turnaround is a +$97 add-on.