eMPower Millis is a program offered by the town of Millis to provide new electricity supply options and more renewable energy to Millis residents and businesses. The Program is a town-vetted alternative to Eversource’s default supply and other third party electricity suppliers.
The eMPower Millis program has been renewed, with new prices for the period November 2025 until November 2028. Most current participants do not need to take any action to remain in the program and receive the new pricing.
View a copy of the renewal letter mailed to all participants on the Resources page here.
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 page with any questions.
More Ways to Save! In addition to the supply options through the program, discounts are available for low income customers and customers with heat pumps. Learn more below.
Program Products
eMPower Millis has a default option, called Millis Regular. Participants in the program receive Millis Regular unless they affirmatively choose one of the other electricity options.
In addition to the standard electricity supply product, the Program also offers an option with 100% total energy from renewable energy certificates. You can sign up for either option, return to the default 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 Until November 2025 | ||
|---|---|---|
 Millis Basic |
 Millis Regular (community default) |
 Millis Plus |
|
15.784 ¢/kWh All Rate Classes |
16.178 ¢/kWh All Rate Classes |
17.282 ¢/kWh All Rate Classes |
|
No additional renewable energy (63% in 2025) |
Adds 10% renewable energy (73% in 2025) |
Adds renewable energy to total 100% (100% in 2025) |
| 36 months: November 2025 until November 2028 meter reads | ||
| Program Options Starting November 2025 | ||
|---|---|---|
|
Millis Basic |
Millis Regular (community default) |
Millis Plus |
|
14.346 ¢/kWh All Rate Classes |
14.742 ¢/kWh All Rate Classes |
15.380 ¢/kWh All Rate Classes |
|
No additional renewable energy (63% in 2025) |
Adds 10% renewable energy (73% in 2025) |
Adds renewable energy to total 100% (100% in 2025) |
| 36 months: November 2025 until 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.
Future savings compared to Eversource Basic Service cannot be guaranteed because future Basic Service prices change every six months for residential and commercial customers and every three months for industrial customers. See Eversource Basic Service supply prices for residential customers here and for business customers here.
All of the additional RECs included in the program are designated as Massachusetts Class I. RECs are the accepted legal instrument used to track renewable energy generation and to substantiate claims of renewable energy use. Learn more about the RECs that are included on the Renewable Energy page.
Goals of the eMPower Millis program
Support Renewable Energy Resources
eMPower Millis’s standard and optional products include more Renewable Energy Certificates (MA Class I), than required by the Commonwealth. This means you can support the growth of renewable energy generation in our region.
Competitive, Stable Price
Using strategic purchasing, combined with the bulk purchasing power of thousands of households and businesses in the program, eMPower Millis provides competitive, stable rates. Please note, savings compared to Eversource Basic Service cannot be guaranteed because Basic Service prices change every six months for residential and commercial customers and every three months for industrial customers.
Increased Choice and
Easy Participation
The program offers 3 different options for electricity supply so that everyone in Millis can find an option that fits their budget and climate goals.
Participants in eMPower Millis may leave the program at any time without penalty.
Solar Electricity Consumers will continue to receive their net metering credits while participating in the program.
Budget Plan or Eligible Low-Income delivery rate consumers will continue to receive those benefits from the utility.
How it works
eMPower Millis does not replace Eversource as our electric utility: they continue to deliver electricity, repair outages and manage all billing. The program offers alternatives for the Supply portion of your bill. See the Understanding Your Bill section on the Eversource website to see the difference between Supply and Delivery sections.
Most residents and businesses in Millis already participate in the eMPower Millis program. Check your electricity bill to see if you’re one of them: the Supplier should be listed as Constellation – Millis. If Eversource is still listed as your supplier, you may complete the enrollment form to sign up for eMPower Millis. If a different supplier is listed, contact that supplier to check for penalties or termination fees that they may charge before you join the eMPower Millis program.
Participation in the eMPower Millis program is voluntary: you can leave the program at any time without fee or penalty.
The program will periodically send Customer Notification letters to new or newly eligible electricity customers, which includes the program details, information about product prices, and renewable energy certificates. Customers who receive this letter and do not choose to opt out will be automatically enrolled. To enroll sooner, use our online forms.
MORE WAYS TO SAVE
- Opt-down to Millis Basic. Customers seeking greater financial relief can opt down to Millis Basic. Click here to enroll.
- Low-Income Discount: Eversource in Massachusetts provides a 42% discount to low-income customers that apply to the entire bill, including the cost of eMPower Millis supply. Go to this page to enroll.
- Heat Pump Discount Rate: Starting November 1, 2025, most electricity customers with heat pumps will receive a discount through Eversource’s ‘heat pump’ delivery rate. This discount applies only to the delivery portion of electric bills, so customers in this community’s aggregation program remain eligible and can enjoy added savings.
- Key details:
- Automatic enrollment: Customers with Mass Save®-supported heat pumps installed on or after Jan 1, 2019 will be automatically enrolled starting Nov 1, 2025 — no action needed.
- Winter discount: Reduced delivery rates apply Nov 1 – Apr 30 each year.
- Estimated savings: About $540 per winter (Mass. DPU).
- No impact on supply: Only affects delivery charges; aggregation supply rates stay the same.
- Non-heat-pump customers: Remain on standard delivery rates.
- Enrollment notices: Will be sent prior to the November 1, 2025 enrollment date.
- Manual enrollment: All other customers need to reach out to Eversource to enroll.
- Key details:
Check Eversource’s heat pump rate page to find more information about signing up. For more information on heat pumps, check out this helpful FAQ from Mass Save.
Questions & Support
To manage eMPower Millis, the Town partners with an aggregation consultant, Good Energy, L.P. For questions and support, you may contact a Good Energy representative at support_ma@goodenergy.com, or call (844) 645-5232.