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Electric Information For New Hampshire Suppliers and Aggregators
Eversource welcomes the competitive electric market as well as the opportunity to meet and support energy suppliers and aggregators.
Residential Customer Service
Monday through Friday, 7 a.m. to 7 p.m.
800-662-7764
800-346-9994 (Hearing Impaired
TTY/TDD)
Business Customer Service
Monday through Friday, 8 a.m. to 5 p.m.
866-554-6025
Energy Suppliers and Brokers
New Hampshire Public Utilities Commission
800-528-2070
Important Documents and Forms
- Generic Rate ICAP Tags for 2025-2026 (.xls file download)
- Interval Request Form (PDF)
- Self Supply Notification Form (PDF)
- EDI Testing Notification Data Form (.doc file download)
- Information for ISO New England Load Asset Registration Form (ARF) (.xls file download)
- Supplier Services Master Agreement (PDF)
New Hampshire Public Utilities Links
- Electronic Data Interchanges (EDI) Standards
- Disclosure of Resource Mix - (In appendix B of FR 96-150 Electric Utility Restructuring Order No. 22,875)
- Supplier Registration Requirements (PDF)
Numeric Profile Segments
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.
- New Hampshire Profiles (.xls file download)
- New Hampshire Hourly Profiles (.xls file download)
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 June 15, 2025, the value is 1.04566.
Schedules
Electronic Interchange (EDI) schedule
| Daily Activity/Event | Approximate Completion Time |
|---|---|
| Receive Supplier EDI Input | 00:00 - 15:00 |
| Daily Billing Cycle Process | 16:00 - 08:00 (Upload readings, post cash billing) |
| Bills printed/inserted/mailed | By 18:00 |
| Transmit EDI Output to Suppliers | 12:00 - 15:00 |
Holiday schedule for EDI
Eversource will not process or send Electronic Data Interchange (EDI) transactions on the holidays as listed in the Electric Delivery Service Tariff. EDI transactions will be processed and sent the following business day.
Meter reading (PDF)
Supplier training schedule
Supplier training sessions are offered to new suppliers just prior to moving to EDI production in the Eversource territory.