Competitive Suppliers must be registered with the Massachusetts Department of Public UtilitiesNew Hampshire Public Utilities Commission before selling electricity to our customers. For information about becoming a registered supplier in MassachusettsNew Hampshire, please visit the Massachusetts Department of Public UtilitiesNew Hampshire Public Utilities Commission’s website.
Registered suppliers that wish to provide electric service to our customers must complete a Competitive Electric Supplier Service Agreement Competitive Electric Supplier Trading Partner Agreement with Unitil.
Historical Rates
Tariffs
Schedules
2019 Holiday Schedule
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New Year's Day
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Tuesday, January 1, 2019
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Memorial Day
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Monday, May 27, 2019
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Independence Day
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Thursday, July 4, 2019
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Labor Day
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Monday, September 2, 2019
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Veteran's Day
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Monday, November 11, 2019
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Thanksgiving Day
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Thursday, November 28, 2019
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Day after Thanksgiving Day
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Friday, November 29, 2019
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Christmas Day
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Wednesday, December 25, 2019
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2020 Holiday Schedule
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New Year's Day
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Wednesday, January 1, 2020
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Memorial Day
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Monday, May 25, 2020
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Independence Day (observed)
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Friday, July 3, 2020
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Labor Day
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Monday, September 7, 2020
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Veteran's Day
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Wednesday, November 11, 2020
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Thanksgiving Day
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Thursday, November 26, 2020
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Day after Thanksgiving Day
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Friday, November 27, 2020
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Christmas Day
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Friday, December 25, 2020
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2019 Meter Reading Schedule
2020 Meter Reading Schedule
EDI Operating Schedule
Each trading partner will have daily schedules that will be accommodated to the extent possible. Operating schedules cannot be standardized because of differences in daily transaction volumes, processing techniques, technology, etc. The EBT Working Group has developed a baseline schedule that all trading partners can rely on that does not place an undue burden on any trading partner.
The common Distribution Company transaction processing schedule for a normal business day is as follows:
- Supplier transactions must be received by the processing Distribution Company by noon each working day Transactions received by noon will be processed and responded to by noon of the following business day.
- Validated usage transactions will be transmitted to Suppliers by noon of the day following the corresponding Distribution Company processing cycle.
Supplier Training
A general supplier training session by phone is held before EDI testing can begin. To register, e-mail or contact the sponsoring utilities’ contact person for the time and call-in information for the training. See schedule below.
Please contact Unitil Electric Supplier Services for training details.
Load Profiles
Class Average Load Shapes
| RD-1 |
RD1 |
Watt Hour |
| RD-2 |
RD2 |
Watt Hour |
| GD-1 |
GD1 |
Demand |
| GD-2 |
GD2 |
Demand |
| GD-4 |
GD4 |
Optional Time of Use |
| GD-5 |
GD5 |
Watt Hour |
| GD-3 |
GD3 |
Demand with record |
| SD |
SD |
Unmetered |
The load profile data in the below excel file contains the following:
- Column A – Profile Class (this is the meter type in most cases; there may be exceptions)
- Column B – Date
- Columns C through Z – Interval Data (data is in kW units and are shown on a per customer basis)
Distribution System Loss Factors
| RD-1, RD-2 |
6.35% |
| GD-1 |
6.35% |
| GD-2, GD-4, GD-5 |
6.12% |
| GD-3 |
3.68% |
| SD |
6.35% |
Distribution System Loss Factors
| G2 |
6.392% |
| OL |
6.468% |
| D |
6.468% |
| G1 |
4.591% |
Purchase of Receivables Discount Rates
Effective December 1, 2019
| Residential |
3.38% |
| Small & Regular General |
0.71% |
2019-2020 Class Average ICAP Tags
| RD-1 |
1.67 |
| RD-2 |
1.56 |
| GD-1 |
0.35 |
| GD-2 |
9.44 |
| GD-4 |
11.45 |
| GD-5 |
6.16 |
| GD-3 |
772.26 |
| SD |
0 |
2019-2020 Class Average ICAP Tags
| G2 |
5.52 |
| OL |
0 |
| D |
2.06 |
| G1 |
354.69 |
Forms
Massachusetts Interval Data Request Form
New Hampshire Interval Data Request Form
ISO New England Load Asset Registration Form for Massachusetts (Excel)
ISO New England Load Asset Registration Form for New Hampshire (Excel)
Unitil Contact Information
Caitlin Chaput
Energy Analyst
Fax: 603-773-6647
Phone: 603-773-6433
el_supplierservices@unitil.com
