Derek S. from Houston here. I'm trying to understand Texas deregulated market structure and I'm getting confused between Oncor's delivery tariffs and the retail electric provider generation rates. When I'm doing rate analysis for commercial customers, do I need to model both components separately? The Oncor tariff has all these demand charges and the REP has their own pricing structure on top of that.
Oncor delivery charges vs generation rates - Texas confusion
Steve M. in Corpus Christi. Yes, you absolutely need to model both components. Oncor (or whatever TDU serves the area) handles the delivery charges which include distribution demand charges, transmission charges, and various riders. The REP handles generation and adds their own markup structure. The total bill is TDU charges plus REP charges plus REP markup.
Don G. from Fort Worth. Steve's right about modeling both pieces. What makes it more complicated is that some REPs bundle everything into a single rate while others break it out separately on the bill. For analysis purposes, I always try to get the TDU tariff separately so I can understand what portion is delivery versus generation.
Derek, Randy Dawson here. Texas deregulation definitely adds complexity to rate analysis. The TDU charges like Oncor's are regulated and filed with PUCT, while REP pricing is competitive market rates. For comprehensive analysis, you need the TDU's delivery tariff (which includes demand charges, customer charges, and various pass-through riders) plus the REP's generation charges and any REP-specific fees. Many REPs will provide a detailed breakdown if you ask, showing TDU pass-through charges separately from their generation and markup charges. The PUCT website has all the TDU tariffs posted under each utility's section.
Thanks everyone. Randy, that breakdown approach makes sense. I found Oncor's tariffs on the PUCT site and they're much more detailed than I expected. The transmission charges alone have like six different components. Texas is definitely more complex than the regulated states I'm used to working with.
Ron P. from Fargo. Not familiar with Texas market but this sounds similar to some of the competitive markets up here. Do the Texas REPs have standard rate sheets or is everything custom pricing?
Ron, most REPs have standard products listed on PowerToChoose.org for residential, but commercial rates are usually custom quotes. The larger REPs like Direct Energy, TXU, Reliant have published commercial rate schedules, but pricing can vary based on credit, contract length, usage patterns, etc.
Arnold K. in Bismarck. Sounds like a nightmare compared to our regulated utility structure. How do you even compare rates when half the components are custom quotes?
Arnold, it's definitely more work. I've started creating RFP templates that ask for the same breakdown format from all REPs - TDU pass-through charges, generation rate, and any REP fees itemized separately. Makes comparison much easier when they're all formatted consistently.