Westford Power Options Program (POP)

Westford POP is an electricity supply program organized by the town of Westford to provide residents and businesses with new, town-vetted options for electricity supply. The delivery of electricity and billing for use is still completed through National Grid, so customers continue to receive one bill from the utility.

Newly Eligible customers in Town recently received an opt-out notification letter from the program. This letter contained an error for the program’s default price. Please see the corrected letter here or the table below for the program pricing.

Please visit the support section with any questions.

Electricity Options

The program adds 10% of renewable energy certificates to the standard option, and also offers an option with 100% total energy from renewable energy certificates so you can make an even bigger impact in your support for renewable energy resources in New England. You can sign up for either option, switch options, or leave the program at any time. You can also check the sample bill for an illustration of a simple way to tell if you a part of the CEA program.

Program Options Starting November 2025
Westford POP Standard (community default)	Westford POP Basic	Westford POP Gold
14.742 ¢/kWh All Rate Classes	14.346 ¢/kWh All Rate Classes	15.380 ¢/kWh All Rate Classes
Adds 10% voluntary renewable energy (MA Class I RECs) (79% in 2026)	No additional renewable energy (69% in 2026)	Adds voluntary renewable energy (MA Class I RECs) to total 100% (100% in 2026)
36 months: November 2025 through November 2028 meter reads

Please note: Prices for all products in the program include a $0.001/kWh administration fee. Program prices apply only to the electricity supply portion of your electric bill. Delivery charges on your electric bill are not affected by the program.

If you are a new medium, large or very large business customer, or if you have previously opted out of the Program, the supplier has the option to offer a market price. Market prices will be offered by the electricity supplier in writing or phone, and you will not be enrolled in that price unless you affirmatively accept.

RECs are the accepted legal instrument used to track renewable energy generation and to substantiate claims of renewable energy use. The additional RECs voluntarily purchased by the program qualify for MA Class I designation.

See National Grid Basic Service supply prices for residential customers here and for business customers here.

*Disclaimer: A goal of the CEA program is to produce savings for customers, but savings cannot be guaranteed compared to the utility’s basic service rate which changes every six months for Residential and Commercial customers, and every three months for Industrial customers. The aggregation program seeks to provide price stability and average savings over the full term of the program, but because future basic service rates are not known, there is no guarantee of savings.

Enroll or Change Option

If you’re already participating in the Power Options Program, you can also use this form to sign up for additional renewable electricity with Westford Pop Gold.

If you are not participating in the POP program, you can use this online form to enroll in one of the POP options. If enrolling, once service has begun, your choice will be reflected on your following month’s electricity bill for the previous month’s service. Please note that based on your meter read date, it may take up to two billing cycles to get enrolled.

If you are currently a customer of a competitive supplier, you may be subject to penalties or early termination fees from your supplier if you switch from the competitive supplier to the Program during the term of your contract. There is no charge for leaving Basic Service, however, Industrial customers leaving fixed-price Basic Service may receive a billing adjustment that may be a credit or a charge.

Be sure to use the name and address associated with the account!

Renewable Energy in the Westford POP Program

Westford POP is committed to supporting the growth of new renewable energy generation in our region. While the Commonwealth requires electricity consumers to include more renewable energy generation over time, the pace of change needs to be faster to mitigate the effects of climate change. Westford Power Options Program is leveraging the buying power of our community to support renewable energy generation in New England.

Product Details

	Year	Required MA Class I	Required Other Renewables	Voluntary Renewables added by Program	Total Renewables
Basic	2024	24%	38%	–	62%
Basic	2025	27%	36%	–	63%
Standard (automatic)	2024	24%	38%	10%	72%
Standard (automatic)	2025	27%	36%	10%	73%
100	2024	24%	38%	38%	100%
100	2025	27%	36%	37%	100%
Utility Basic Service if you opt out	2024	24%	38%	–	62%
Utility Basic Service if you opt out	2025	27%	36%	–	63%

Using Our Combined Buying Power For Change

Westford’s standard product, POP Standard, includes 10% Renewable Energy Certificates (MA Class I RECs), in addition to the requirements of the Commonwealth (Read more about the renewable energy requirements in Massachusetts). Most residents and businesses in Westford participate in the program and use the POP Standard product. Across our entire community, these additional REC purchases add up to a substantial impact. For those who want to accelerate the transition to a sustainable future, the Westford POP offers an electricity product that add and 100% renewable energy certificates (MA Class I RECs).

RECs are the accepted legal instrument used to track renewable energy generation and to substantiate claims of renewable energy use.

Supporting Renewable Resources On Our Electricity Grid

All of the additional RECs in Westford POP come from MA Class I resources that are part of our ISO-New England electricity grid. This means the energy sources are located in New England or the energy is imported as allowed by ISO-New England from locations such as New York or eastern Canada.

Westford POP goes even further: all of our MA Class I RECs come from sources exclusively located in New England. See below for a map of our sources.

Location Matters

Our REC purchases stands in contrast to some electricity supplies who obtain RECs from national sources (e.g. Texas), where the electricity is not part of our ISO-New England electricity grid. These suppliers purchase national wind RECs for a fraction of the cost of a New England equivalent, but you get what you pay for: national wind RECs are cheap because places like Texas, where they are often sourced, don’t have high development costs for energy projects. To change our electricity generation from burning natural gas and other fossil fuels to renewable sources, our program purchases RECs that are sourced in New England and meet the MA Class I standards. That way, our program is supporting the fuel shift and the transition to a sustainable future.

Supporting Zero-Emission and Methane-Destroying sources

Westford POP’s extra RECs only come from zero emission sources, such as solar, wind, low impact hydropower¹, and sources that destroy methane, such as anaerobic digestion. Methane has a global warming potential (GWP) 28-36 times greater than CO₂ over a 100 year period². Combustion destroys methane and releases some CO₂, resulting in a net reduction in GWP. Other forms of biomass are explicitly not purchased, due to their positive emissions of CO₂ during their life cycles.

Sources of our Renewable Energy Generation

All of the extra renewable energy certificates in the Westford POP are provided through the local non-profit, Green Energy Consumers Alliance.

Resources that have recently been, are in, or are contracted with Green Energy Consumers as of April 2025.

1 Hydro projects that do not exceed 30 MW built after 1997 or have capacity additions or efficiency improvements made after 1997 (MA Class I eligible), and Low Impact Hydro Institute (LIHI) certified.

2 Methane has a global warming potential (GWP) 28-36 times greater than CO2 over a 100 year period. Combustion destroys methane and releases some CO2, resulting in a net reduction in GWP. For more, see Environmental Protection Agency, Understanding Global Warming Potentials. https://www.epa.gov/ghgemissions/understanding-global-warming-potentials

Support & Information

If you have questions about your participation, contact the electricity supplier, Constellation at (833) 461-0813, or by email at vst@constellation.com. For general program questions you can reach Good Energy, the consultant that manages the Program, by submitting an inquiry or comment by completing the Contact Us form.

Use our bill calculator to compare the monthly costs of Westford POP and Utility’s Basic Service.

Westford POP is overseen by the Town Manager’s Office.

How to leave Westford POP

If you do not wish to participate in the aggregation program, you may submit the opt-out form below or contact the current program supplier, Constellation at (833) 461-0813.

Name

First

Last

Phone

Account type

Residential
Business

Your ELECTRIC utility

Eversource
National Grid

Service Address

Address Line 1

Address Line 2

City

State

Zip Code

Yes, I want to opt out of the aggregation program

Why are you leaving the program? (select all that apply)

To get a better price
To get a different term length
Other (please explain):

Website

Compare rates for the POP with your utility

ENTER MONTHLY KWH:
WESTFORD POWER OPTIONS PROGRAM RATES (November 2025 until November 2028 Meter Reads)
PRODUCT OPTIONS	RATE	Monthly Supply Cost
POP STANDARD Adds 10% Renewable Energy	$0.14742	$
POP PLUS Adds Renewable Energy to Total 100%	$0.15380	$
POP BASIC No Additional Renewable Energy	$0.14346	$

NATIONAL GRID RATES August 1, 2025 – January 31, 2026
RATE CLASS	RATE	Monthly Supply Cost
RESIDENTIAL	$0.15484	$
SMALL BUSINESS & LIGHTING	$0.14411	$
LARGE BUSINESS (WCMA) November 1, 2025 – January 31, 2026	$0.17130	$

Disclaimer: A goal of the POP program is to produce savings for customers, but savings cannot be guaranteed compared to the utility’s basic service rate which changes every six months for Residential and Commercial customers, and every three months for Industrial customers. The aggregation program seeks to provide price stability and average savings over the full term of the program, but because future basic service rates are not known, there is no guarantee of savings.

Program Materials

Tax Receipts for Additional (Voluntary) Renewable Energy

The payments you make for additional renewable energy are federally tax-deductible as charitable contributions. After January 31st of each year, request your previous year’s tax receipt from the nonprofit that supplies our community’s additional renewable energy, Green Energy Consumers Alliance, at GreenEnergyConsumers.org/TaxReceipts. Green Energy Consumers Alliance may also notify you via email.

Documents

View Westford’s Revised Aggregation Plan, available for public review December 9, 2024 to January 13, 2025, filed with Department of Public Utilities January 27, 2025.