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Electric Information For Suppliers & Aggregators

Eversource welcomes the competitive electric market as well as the opportunity to meet and support energy suppliers and aggregators.

Following is information for energy suppliers and aggregators in order to facilitate participation in the competitive energy market.

Load Shape Profiles

The methodology used to estimate supplier loads is described in the Terms and Conditions for Energy Service Providers section of the currently effective Electric Delivery Service Tariff. In compliance with the terms and conditions, Eversource is providing the hourly load shapes for various customer classes which are used to estimate these supplier loads.

To download the average hourly data for a specific customer class, select the MS Excel file format and save the file to your hard drive. Once the file is saved, it can be imported into most spreadsheet programs.

Rate Type Adobe PDF Microsoft Excel
Residential Service (Rate R) PDF Excel
General Service (Rate G) PDF Excel
Primary General Service (Rate GV) PDF Excel
Large General Service (Rate LG) PDF Excel
Outdoor Lighting Service (Rate OL & EOL) PDF Excel

Loss Factors

The loss factors below are utilized to calculate losses, which will then be added to actual or estimated load to arrive at total supplier assigned load. The loss factors below do not include transmission losses.

Rate Type Loss Factors
Rate R - Residential 7.75%
Rate G - Small Commercial, < 100KW 7.75%
Rate GV - Customers between 100 KW - 1000 KW 6.31%
Rate LG - Customers > 1000 KW 4.42%
Rate OL & EOL - Outdoor Lighting 7.72%

Capacity Unaccounted for Energy (UFE) Information

This daily Unaccounted for Energy (UFE) value reflects the difference between the day's sum of the individual Eversource customer coincident peak capacity values (inclusive of non-Pool Transmission Facility losses) and the total Eversource system peak load for the applicable capability year.

Effective November 15, 2017, the value is 1.05580.

Supplier Service Master Agreement

Click here for our Supplier Services Master Agreement.


Electronic Interchange (EDI) Schedule

Daily Activity/Event Approximate Completion Time
Receive Supplier EDI Input 00:00 - 13:30
Daily Billing Cycle Process 16:00 - 08:00 (Upload readings, post cash billing)
Bills printed/inserted/mailed By 16:00
Transmit EDI Output to Suppliers 8:00 - 12:00 (12:00 noon is the latest time)


Holiday Schedule for EDI

Eversource will not process or send Electronic Data Interchange (EDI) transactions on the following holidays and will be processed and sent the following business day:

  • New Year's Day - January 1 *
  • Martin Luther King Day / Civil Rights Day - Third Monday of January
  • Presidents' Day - Third Monday in February
  • Memorial Day - Last Monday in May
  • Independence Day - July 4 * 
  • Labor Day - First Monday in September
  • Columbus Day - Second Monday in October
  • Veterans Day - November 11 *
  • Thanksgiving - When appointed
  • Christmas - December 25 *

* If this holiday falls on a Sunday the following day will be observed as the holiday.

Meter Reading

Supplier Training Schedule

A general supplier training session by phone is held before EDI testing can begin. This training session is required and can be arranged by contacting us. 


State Information

For More Information


Monday - Friday, 7 a.m. to 7 p.m.
800-346-9994 (Hearing Impaired TTY/TDD number) 


Monday - Friday, 8 a.m. to 5 p.m.

Energy Suppliers and Brokers



Phone: Call the New Hampshire Public Utilities Commission at 800-528-2070 or go to New Hampshire Public Utilities Commission website.