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Updated: 01/27/2023

Provider Snapshot

  • Founded: 1999
  • Headquarters: Baltimore, MD
  • Service Areas: CT, GA, IL, OH, MA, MD, NJ, PA, TX
  • Provider Score™: 4.53/5 

Energy Options

  • Electricity Plans
  • Natural Gas Plans
  • 100% Renewable Plans
  • Smart Home Bundles
  • Business Electricity

About Constellation Energy

Constellation is the nation’s leading provider of carbon-free energy with a commitment to be 100% carbon-free by 2040. They serve over 2.5 million residential and business customers across the United States. They specialize in integrated energy solutions from electricity, natural gas, and renewable energy supply to energy efficiency and distributed energy solutions. This creates a one-stop-shop for your personal or business energy needs.

Shop Constellation Energy Rates

Price to Compare 10.02¢

The electricity utility's price for electricity supply expressed as a price per kWh, to be used to contrast prices with competitive suppliers.

Best Electricity Rates
ProviderPlan NameLengthRate Per kWhSign Up
36 Month Home Power Plan
36 Mo.9.79¢
Save 3%
36 Month PowerPlug Plan
36 Mo.10.29¢Select
24 Month Green Home Power Plan
24 Mo.10.39¢Select
PlanRate Per kWh
36 Month Home Power Plan

36 Months
36 Month PowerPlug Plan

36 Months
24 Month Green Home Power Plan

24 Months
  • 100% Renewable Sources
  • Smart Home System Included
See All Plans

Constellation Energy Reviews and Ratings

Best Electricity Provider badge

Constellation Energy Provider Score: 4.53/5

Constellation is the Best Electricity Provider for 2023 in’s list of the Best Electricity Providers. This results from a 20+ year track record of serving customers across the United States with innovative electricity plans, excellent customer service, and a lasting, positive impact in their communities.

Rate Offering: 4.83/5

Constellation offers a wide variety of energy plans and solutions including low fixed-rate electricity and natural gas plans, 100% renewable plans and smart home bundles. Depending on location, they have solar panel options for residential homes or businesses.

Customer Support: 5/5

When you need them, they are there for you. Day or night. You can reach out to customer support via their call center, live chat or email 24/7.

Business History & Community Outreach: 5/5

Founded in 2001, Constellation has been serving customers across the United States for 20+ years. They also have a significant positive impact in their local communities supporting Habitat for Humanity, E2 Energy to Educate and several other charitable causes. In 2021 Constellation and its employees contributed over $10M to support 4,000 organizations. Employees contributed 68,000 volunteer hours across 34 states.

Online Customer Reviews: 3.32/5

Constellation has a rating of 3.32/5, based on 1,594 reviews across various review sites.

Constellation Energy Options

  • Low Cost, Fixed-Rate Electricity Plans: 6, 12, 30 and 36-month plans
  • Electricity Plans with Bundles: Plans that include smart home systems and A/C protection plans
  • 100% Renewable Plans: Plans that support green power and offset energy usage with 100% renewable energy sources
  • Natural Gas Plans: Lock in a fixed-rate natural gas plan and avoid untimely fluctuations on your gas bill
  • Small Business & Commercial Electricity: Lower your energy overhead by procuring lower energy rates for your business

Why Choose Constellation?

Constellation is committed to maintaining high levels of customer service, competitive pricing, and working with their local communities to help those in need. You’ll get:

  • Timely, personal responses to any and all of your questions
  • Continuous feedback for added value to products and services
  • A user-friendly online experience
  • Competitive pricing and various payment options

They also regularly partner with groups such as Habitat for Humanity to implement affordable energy options and offer various educational grants.

Residential Energy Service Areas

Contact Information

Note: If you're experiencing an electricity outage, contact your local utility company.