We offer AutoPay and average billing payment options to help save you time and money when you're paying your bill. And if you ever have issues with your electricity plan or your bill that you can't solve alone, you can contact our customer service team anytime you need help. We're available 24/7 through online chat or by phone to answer any questions you might have about your home electricity account. 
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.
Killeen electricity consumers are located in the Oncor service area. As a transmission and distribution service provider (TDSP), or utility, the company will provide energy supply to your business or home. Don't contact Oncor with any billing or customer service questions. Utility companies handle outages and repairs. Your REP handles questions related to your bills.
Since the 1990s, many regions have opened up the generation and distribution of electric power to provide a more competitive electricity market. While such markets can be abusively manipulated with consequent adverse price and reliability impact to consumers, generally competitive production of electrical energy leads to worthwhile improvements in efficiency. However, transmission and distribution are harder problems since returns on investment are not as easy to find.
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