With the 18 Month Usage Bill Credit plan from Constellation, an average Texas bill would be about $128.80. To get a better idea of what an average Constellation bill would be for you, try out our Constellation Bill Calculator
TDSP fees can be a fixed charged per bill, or a variable charge based on how much electricity you used during that period. There are a few providers that offer "bundled" rates, which include these fees in their Energy Charge. In bundled rates, your actual average rate will not change during the course of your contract (assuming the plan has no monthly charge).
The TDSP fees charged and their amounts will vary depending on which TDSP services your area. As of May 2018, Oncor has the lowest per-bill charge at $5.25, while AEP-North has the highest, at $10.53 per bill. TNMP has the lowest average usage charges, at around 3.3¢/kWh, and CenterPoint is the highest, around 4.1¢/kWh.
Electric companies generally have the same energy charge applied, no-matter which TDSP the plan is in. The difference in the TDSP fees are the reason the same plan can cost around a penny higher in CenterPoint vs TNMP.
Some of the TDSP fees you may be charged are: