Quick service
Electrical load letters for utility service
Utility load letters and service sizing calculations for new and remodeled sites, ordered on their own when the utility or landlord asks for the electrical load.
What you get
- A load letter stating the existing and new electrical load of the building or space
- Load calculation by panel, with connected and demand load in kVA and amps
- A check of the result against the existing or proposed service size
- The equipment list with the load used for each item
- Calculation report as a PDF
When you need a load letter
- The utility asks for the total load before it approves a new or upgraded service
- You are adding HVAC units, EV chargers or kitchen equipment to an existing building
- A landlord needs to know whether a tenant space can take the new load
- A permit reviewer asks you to show the service is large enough
- You are planning a fit-out and need the numbers before the design starts
How it works
- 1
Send what you have
Panel schedules, the electrical drawings or photos of the panels and nameplates, and a list of the new equipment.
- 2
We confirm scope and fee
An engineer replies within one business day, and we sign an NDA before you send files.
- 3
We calculate
We add up the connected load panel by panel, apply the demand factors of the electrical code the project falls under, and check the total against the service size.
- 4
You receive the letter
The load letter and the calculation behind it, ready to send to the utility or the landlord.
Price and turnaround
Each job is quoted from your drawings. Send them and an engineer replies within one business day with the fee and a delivery date.
Frequently asked questions
What is an electrical load letter?
It is a short engineering letter that states a building's electrical load, existing and new, so the utility or the landlord can confirm the service can carry it. It is backed by a calculation that lists every load.
What do you need to start?
Panel schedules or clear photos of the panels, the nameplate data of the main equipment, and a list of what you plan to add. We tell you what is missing before we start.
Can you work without drawings?
Yes, if you can send clear photos of the panels, breakers and equipment nameplates. Any assumptions are listed in the letter.
Can this be part of a full design later?
Yes. The calculation carries straight into a full MEP design if you decide to continue with us.
Ready to order?
Tell us about the site and attach any drawings. An engineer replies within one business day, and we sign an NDA before you send project files.
Need the whole building designed? See our full MEP design service, or start with a free project review.