An additional bill was passed in 1999 that helped further establish a competitive electricity market by creating a price floor to prevent established energy providers from underselling emerging providers. In 2002, Texas finalized deregulation when the Public Utility Commission gave ERCOT the responsibility of managing and monitoring the Texas electricity market. The market opened up to around 6 million Texas power customers.
Around 85% of Texas residents must choose an electricity provider. Utility companies transmit and distribute electricity to customers. But that electricity doesn’t come from a utility—it comes from companies known as Retail Electric Providers. These providers offer competitive plans based on electricity pricing, term length, renewable sourcing and more.
Usually, fixed-rate renewable-energy plans are among the most expensive options. But in our research, we found Constellation’s green plan rates were comparable to its non-green versions. For example, out of two otherwise identical fixed-rate, 12-month plans from Constellation — “12 Month Fixed Rate 100% Green” and “12 Month Fixed Rate” — it’s the renewable version that currently costs less.
Just Energy’s style of Contract Summaries doesn’t make it easy to parse out exact details, leaving blank spaces where rate and term length info should appear. On the third page, you’ll find densely typed Terms and Conditions that confusingly conflate Just Energy’s natural gas and electricity plans. It’s heavy on the legalese but light on the data that you’ll want to nail down before making a purchasing decision, like rate. We couldn’t get a clear price or explanation on what happens after commitment without enrolling in a plan.
Before 1997, all energy services were provided by the utility with prices regulated by the Public Utility Commission to match the wholesale price of energy – subject to change as often as once a month. Following the law’s passage, however, prices became “deregulated”, meaning alternative suppliers could provide energy supply at different rates than the PUC-approved price of energy.
Texas electricity deregulation has given millions of Houston residents and businesses the power to choose the cheapest electricity rate. According to ERCOT, over 92% of Texas homes and businesses who live in deregulated areas have switched electric companies since deregulation began in 2002. Even though electric choice in Texas has been hugely successful for energy savings, customers are still confused by the options, terminology, and overall process of switching electric providers.
Retailers Include: AEP Energy , APG&E Energy Solutions , Calpine Energy Solutions , Constellations NewEnergy, INC , Crius Energy , Direct Energy Services LLC , Dynegy , ENGIE Resources , Entrust Energy , IGS Energy , Just Energy , Liberty Power , Next Era Energy Services , Nordic Energy Services, LLC , NRG Energy INC , Source Energy , Spark Energy , Starion Energy , Stream Energy , Talen Energy , TransCanada Power Marketing LTD. 
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Here’s something to watch out for: Constellation automatically re-ups your contract when your present contract expires, no matter which plan you choose. It’ll send you two notifications prior to re-enrollment, but if you miss those prompts, you have just until the first meter read of your new contract to exit it. After that, the $150 termination fee will apply. Constellation Energy and Just Energy are the only two companies in our lineup with this policy. The others allow your service to lapse back to your utility company if you don’t personally re-enroll.
As an Exelon company, Constellation Energy is part of one of the biggest — and historically most polluting — corporations in North America. Given Exelon’s vast production energy, ranking on the PERI Toxic 100 list is perhaps not that surprising. The good news is that Exelon is upfront about its room for eco-friendly improvement and make it easy for Constellation customers to go green, too.