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Why Massachusetts Customers Choose Constellation

As a leading electricity company in Massachusetts, Constellation allows you to explore fixed electricity supply rates and plans and choose the best option for your needs. It's easy to find energy rates in MA that fit your budget when all of our plans include the following benefits:

Customers across Massachusetts are happy with Constellation’s services; however, if you change your mind, we have a 90-day guarantee+.

Massachusetts Electricity Options

Your supply price stays the same for the length of your plan—while keeping the same utility delivery and billing you rely on so there are no unexpected monthly changes. 

Fixed-Rate Electricity Plans

Protect your budget with fixed-rate electricity plans. Choose the best residential electricity plan for your home based on our current Massachusetts electric supplier rates and terms.

View Electricity Plans

Renewable Energy Plans

Support sustainable energy efforts while locking in a fixed-rate electricity plan. You can enter your zip code to find renewable electric rates and plans that are sourced by 100% national wind and/or solar power for your home.

View Renewable Energy Plans

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Switching Massachusetts Energy Suppliers

In Massachusetts, utility companies used to be the only option for energy users — the utility controlled delivery, pricing and maintenance. After passing the Electric Industry Restructuring Act in 1997, Massachusetts residents were introduced to a competitive energy marketplace, letting you choose the best Massachusetts energy supplier for your needs.

What does energy choice mean?

Energy suppliers in Massachusetts compete for your business, which can result in reduced energy costs, better customer service, more innovative energy solutions, and energy plans to fit your budget. For example, Constellation offers electricity plans to Massachusetts residents with:

  • no sign-up fees
  • exceptional customer service
  • a variety of fixed-rate energy plans

Learn more about energy choice.


Understanding Energy Suppliers in MA vs.
Utility Companies

Utility companies deliver natural gas and electricity to your home. In Massachusetts, this means your utility — which many customers refer to as light and power companies — owns the power lines and gas pipelines which deliver energy to you to serve your home or business. Energy suppliers, like Constellation, let you pick and set the rate you pay for energy. As your Massachusetts energy supplier, we provide you with customized plans, competitive electricity rates, and exceptional customer service!

To learn more about the difference between energy suppliers and utility companies, visit our blog.


Information for Constellation Customers & Massachusetts Residents

To pay your energy bill online, select your local Massachusetts utility company below:

  • Eversource: Pay your energy bill
  • National Grid: Pay your energy bill

If you are experiencing a power outage, call your utility company in Massachusetts:

  • Eversource: 800-592-2000 
  • National Grid: 800-465-1212

Sign up to receive power outage alerts from your utility company in Massachusetts:

  • Eversource
  • National Grid

Opt Out of Contract Auto-Renewal for Massachusetts Residential Customers

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Switching to Constellation is as Easy as 1-2-3

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Small Business Customer? Call us at 1-855-585-3935


Constellation also serves residents in Texas, Georgia, Connecticut, Illinois, Indiana, Kentucky, Michigan, Nebraska,
New Jersey, Ohio, Pennsylvania, Virginia, Washington, D.C., and Wyoming 

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*Only new customer successful enrollments with Constellation. This Program is available to our current residential electricity supply customers outside of Connecticut and Illinois that have an active account with us and are current on all payments owed to us (each a “Referrer"). New customers who have been referred to Constellation must (i) use Referrer’s Referral Code during sign up, (ii) successfully enroll for energy service in a minimum 12-month fixed rate electricity service agreement with Constellation. Constellation will reward Referrers through issuance via email of a $50 virtual MasterCard® or Visa® gift card (a “Gift card”) for each Qualified Referral (as defined in the full Terms & Conditions) or other equivalent consideration, up to $575 per calendar year, once the referred friend becomes a new customer and meets reward qualifications stated above. For additional details regarding Referrers and Qualified Referrals, see the full Terms & Conditions. This Program cannot be combined with other Constellation reward programs or special offers. Void where prohibited. Each Qualified Referral can also earn a $50 Gift Card as thanks for signing up for energy service with us. Gift cards are issued by Virtual Reward Center. See https://www2.virtualrewardcenter.com. Valid email address required for receipt of Gift card. Gift cards will not have cash access. For any questions about your Gift card call our customer care team in Georgia at 877-677-4355, in Texas at 888-913-7052, and outside of Georgia and Texas please call 855-485-1244. Mastercard, Visa and Virtual Reward Center are in no way affiliated with Constellation nor are they to be considered sponsors or co-sponsors of this program. All trademarks are the property of their respective owners. Gift cards are subject to terms and conditions of the card issuer, which are subject to change at the issuer’s sole discretion. Constellation will share your name and email address with Virtual Reward Center for reward fulfillment only. Reward link expires in 3 months. Terms & Conditions 
+90-Day Guarantee Period. You may terminate your Contract without incurring an early termination fee within the 90 days after entering into (the “Guarantee Period”) by notifying us in writing or by calling our customer care center at 1-855-465-1244. Upon your termination during the Guarantee Period, we will return you to being supplied by the Utility at your next available meter read date and you will remain responsible for payment for electricity and related costs and charges incurred under this Contract through such meter read date. Not applicable in Texas. Not applicable in Connecticut or Illinois where residential customers are never charged an early termination fee.

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*Only new customer successful enrollments with Constellation, except in Connecticut and Illinois. Cards are issued by Virtual Rewards Center. Valid email address required for receipt of gift card. Gift cards will not have cash access. For any questions about your gift card, call our customer care team at 1-855-465-1244. The listed merchants are in no way affiliated with Constellation nor are the listed merchants to be considered sponsors or co-sponsors of this program. Use of merchant names and/or logos is by the permission of each respective merchant and all trademarks are the property of their respective owners. Terms and conditions are applied to gift cards/certificates. Please see the merchant gift card/gift certificate for additional terms and conditions, which are subject to change at merchant's sole discretion. Constellation will share your name and email address with Virtual Reward Center for reward fulfillment only. Reward link expires in 3 months.

+90-Day Guarantee Period. You may terminate your Contract without incurring an early termination fee within the 90 days after entering into (the “Guarantee Period”) by notifying us in writing or by calling our customer care center at 1-855-465-1244. Upon your termination during the Guarantee Period, we will return you to being supplied by the Utility at your next available meter read date and you will remain responsible for payment for electricity and related costs and charges incurred under this Contract through such meter read date. Not applicable in Texas. Not applicable in Connecticut or Illinois where residential customers are never charged an early termination fee.


© 2026 Constellation. The offerings described herein are those of either Constellation NewEnergy, Inc., Constellation NewEnergy-Gas Division, LLC, Constellation Connect, LLC or Constellation Home Products & Services, LLC (d/b/a Constellation Home in Maryland and d/b/a Constellation in Georgia, Pennsylvania and Texas), each affiliates of each other. The prices of Constellation are not regulated by any state Public Utility Commission. You do not have to buy Constellation electricity, natural gas or any other products to receive the same quality regulated service from your local utility. Brand names and product names are trademarks or service marks of their respective holders. All rights reserved. 

Electricity or Gas Supplier License/Order #s and Home Services #s: CA 1359, CTA0032; CT 06-07-11, 01-06; DE 00-162; DC GA06-2, EA01-5; GA GM-46; IL 16-0205, 17-0330; IA G-0010; ME 2000-989; MD IR-655, IR-311, IR-500; MA GS-030, CS-015; MI U-14867, U-13660; NE NG-0043; NH DM 17-024; NJ GSL-0101, ESL-0016; OH 09-153G, 00-003E; PA A-125095, A-110036; OR ES4, RI 2379(Z1), D-96-6(E); TX 10014, B07305101; VA G-26, G-51, E-11A; TX Licenses HVAC TACLA 00107498R, Electrical TECL 343159, Service Plan TSCP #684, Plumbing #43217; GA REG CN-211051