Constellation

Constellation Overview

Constellation is one of the larger energy companies operating in Texas, though its name recognition here doesn’t match homegrown brands like TXU or Reliant. The company is a subsidiary of Exelon, one of the biggest energy companies in the United States. Constellation has been active in the Texas market since deregulation began and serves both residential and commercial customers.

Being part of Exelon means Constellation has deep resources and a long track record. The company operates across multiple deregulated markets nationwide, with Texas being one of its key states.

Plan Options

Constellation offers several plan types for Texas residential customers:

• Fixed-rate plans — Standard locked-in pricing for terms typically ranging from 12 to 24 months. These come with early termination fees if you leave before the contract ends.
• Variable-rate plans — Month-to-month pricing with no contract. Rates fluctuate based on wholesale market conditions.
• Green energy plans — Some Constellation plans include partial or full renewable energy credits, allowing you to support clean energy generation. These plans are sometimes priced slightly higher than conventional options.

Constellation also offers home protection plans and other add-on services, though these are separate from your electricity supply and should be evaluated independently.

What to Watch For

Constellation’s national scale means their pricing isn’t always tuned specifically for the Texas market. Smaller, Texas-focused providers often undercut Constellation on rate because they have lower overhead and more targeted operations. That said, Constellation’s financial stability is a genuine advantage — this is a company that’s not going anywhere.

When comparing Constellation plans, be careful about bundled offerings. Some plans include add-on services that may inflate the apparent value. Focus on the per-kWh rate shown on the Electricity Facts Label at the level that matches how much your home typically draws.

Green energy plans from Constellation are worth considering if environmental impact matters to you, but compare them against dedicated green providers like Green Mountain Energy or Chariot Energy to make sure you’re getting a competitive rate for renewable electricity.

Service Territory

Constellation serves customers across all major deregulated areas of Texas, including Oncor (Dallas-Fort Worth), CenterPoint (Houston), AEP Texas (Corpus Christi, South Texas), and TNMP (various areas throughout the state).