Constellation Energy Review 2026: Plans, Rates, and How It Compares

Constellation Energy is one of the largest retail electricity suppliers in the United States, serving millions of residential and business customers across deregulated states. If you’re comparison-shopping for electricity in Texas, Illinois, Pennsylvania, Ohio, Maryland, or New Jersey, Constellation is likely on your list. This review breaks down what Constellation offers, how its rates and plans compare to competitors, and who it’s the best fit for in 2026.

Who Is Constellation Energy?

Constellation Energy Group is the nation’s largest producer of carbon-free energy, headquartered in Baltimore, Maryland. The company operates the largest fleet of nuclear power plants in the U.S. and leverages that carbon-free generation as a selling point for environmentally conscious customers. Constellation was spun off from Exelon Corporation in early 2022, making it an independent publicly traded company (NASDAQ: CEG).

As a retail electricity supplier, Constellation competes directly with providers like NRG, Direct Energy, and IGS Energy in deregulated markets. They serve residential customers in 16 states plus Washington D.C. and serve hundreds of thousands of commercial and industrial accounts.

Constellation Electricity Plans: What’s Available

Constellation typically offers several plan types across its service territories, though exact availability varies by state and utility territory.

Fixed-Rate Plans

Constellation’s fixed-rate plans lock your supply rate for a contract term, usually 12, 24, or 36 months. This is the most popular choice for budget-conscious customers who want predictable bills. Fixed rates shield you from market volatility — a key benefit given how much electricity spot prices can swing during summer heat waves and winter cold snaps.

Variable-Rate Plans

Variable-rate plans from Constellation float month-to-month based on market conditions. These can occasionally be cheaper than fixed rates when wholesale electricity prices are low, but they expose you to price spikes. Most electricity experts recommend fixed rates for residential customers unless you actively monitor the market.

Renewable Energy Plans

Constellation offers 100% renewable energy plans backed by Renewable Energy Certificates (RECs) in most service territories. Their carbon-free nuclear power makes up a significant portion of the backing in some plans. If supporting clean energy is a priority, these plans typically carry a small premium over standard fixed-rate plans — usually $5–15/month more on an average household’s bill.

Business Energy Plans

For commercial customers, Constellation offers customized contracts including block-and-index pricing, load factor pricing, and direct access to wholesale markets for large industrial buyers. Small business customers can typically access the same fixed and variable products as residential customers.

Constellation Energy Rates: What to Expect in 2026

Constellation’s per-kWh supply rates vary significantly by state, utility territory, and current market conditions. As of early 2026, competitive rates in deregulated markets are generally running:

• Texas (ERCOT): 8–12¢/kWh for fixed-rate 12-month plans
• Illinois (ComEd territory): 6–9¢/kWh supply rate
• Pennsylvania (PECO/PPL/Duquesne): 7–10¢/kWh supply rate
• Ohio (AEP/FirstEnergy): 6–9¢/kWh supply rate
• Maryland (BGE/Pepco): 7–10¢/kWh supply rate
• New Jersey (PSE&G/JCP&L): 8–11¢/kWh supply rate

Always compare Constellation’s current price-to-compare (PTC) against your utility’s standard offer before switching. In regulated markets, suppliers like Constellation must beat the utility default rate to be a worthwhile switch.

How Constellation Compares to Competitors

Constellation is a strong brand with nationwide reach and a cleaner generation mix than most retail suppliers, but it’s not automatically the cheapest option. Direct Energy, IGS, Verde Energy, and smaller regional suppliers frequently undercut Constellation on price, particularly on short-term and introductory rate offers.

Where Constellation differentiates itself: stability, customer service infrastructure, and its nuclear-backed carbon-free claims for customers who care about source attribution rather than just REC offsets. If you’re a commercial buyer, Constellation’s scale means it can offer more sophisticated hedging products than smaller competitors.

Constellation Customer Service and Reviews

Constellation generally earns middling customer satisfaction scores — better than the worst regional providers but not at the top tier. Common complaints include billing confusion when switching from a utility default rate, difficulty canceling contracts, and customer service response times during peak billing seasons. Common praise includes the straightforward online enrollment process and transparent rate disclosures.

Check your state’s public utility commission complaint database for Constellation-specific complaint rates in your territory before signing up. Complaint rates vary significantly by state.

Contract Terms and Early Termination Fees

Constellation’s fixed-rate contracts typically include early termination fees (ETFs) if you cancel before the contract end date. ETFs commonly range from $50–$150 for residential contracts but can be higher for commercial accounts. Variable-rate plans are typically month-to-month with no ETF. Always read the contract disclosure statement before enrolling — ETFs and auto-renewal terms must be disclosed under most state regulations.

How to Enroll With Constellation

You can enroll online at constellation.com, by phone, or through a third-party broker. Online enrollment typically requires your utility account number (found on your current bill), your service address, and basic personal information. The switch usually takes 1–2 billing cycles — your utility still delivers the electricity and handles outages; Constellation only supplies the commodity.

Frequently Asked Questions

Is Constellation Energy a legitimate company?

Yes. Constellation Energy (NASDAQ: CEG) is one of the largest energy companies in the United States and is licensed as a retail electricity supplier in every state where it operates. It’s publicly traded and regulated by both state public utility commissions and federal energy regulators.

Will switching to Constellation affect my power reliability?

No. Your local utility still owns and maintains the poles, wires, and infrastructure. Outages, repairs, and emergency response remain the utility’s responsibility regardless of which supplier you choose. Constellation only supplies the commodity (the electricity itself).

Can I cancel a Constellation contract early?

Yes, but you may owe an early termination fee. Fixed-rate contracts typically have ETFs ranging from $50–$150 for residential accounts. Month-to-month variable plans can be canceled at any time without penalty. Read your contract for the exact terms before signing.

Does Constellation offer green energy plans?

Yes. Constellation offers 100% renewable energy plans backed by RECs in most service territories. Their nuclear generation adds a carbon-free component that many other suppliers can’t claim from their generation assets.

How do I compare Constellation’s rates to my current utility rate?

Look at your current electric bill for the “supply rate” or “price to compare.” Your state’s public utility commission also publishes a current Price to Compare figure for each utility. If Constellation’s fixed rate is lower than the PTC, switching will reduce your supply charge. Use a comparison site like Choose Energy to see multiple offers side-by-side.

What states does Constellation serve?

Constellation serves residential customers in Connecticut, Delaware, Illinois, Indiana, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Texas, Virginia, Washington D.C., and some other deregulated territories.