TDU Delivery Charge: TDU stands for transmission and delivery utility — in other words, the utility company in your area that is actually piping the energy from the power generation companies into your home. (Remember, REPs in Texas are just the middleman.) The TDU delivery charge is set by the utility and is consistent from plan to plan and provider to provider within its service areas. For example, AEP , the TDU for Corpus Christi, charges the same delivery fee for all TXU, Direct Energy, and Reliant plans. You don't typically get a choice in utility company, and therefore, these fees are pretty much unavoidable, non-negotiable, and won't factor into choosing an electricity plan or provider.
We often get asked by our subscribers “what is the best electricity company in Texas?”. There are a lot of electricity companies in Texas, so it’s no wonder you want to know what the best electricity companies in Texas are. However, there really isn’t such a thing as one “great” energy company. Of course, there are some companies that are both reliable and well-known. These include Reliant, Direct Energy, TXU, and Gexa. However, when you shop around for an electric provider you’ll find that they all offer competitive rates. Just make sure there aren’t any hidden fees on their plans, as this is what makes them a better choice.
Power to Choose is a program run by the Public Utility Commission of Texas. Its goal is to protect residents of the state from unfair energy costs and unregulated REPs, as well as develop a strong infrastructure. The program provides an easy to use, online tool that give residents of the state the opportunity to compare rates, plans and other energy options.  Keep in mind though, you really need to read the fine print if you decide to use Power to Choose (or any other service, for that matter).
Shopping for a plan based on renewable sources is no different than shopping for any other kind of plan — you calculate your costs the same way, look for the same fees, and weigh in customer satisfaction and other perks. The one thing that’s different is also looking at what percentage of your energy comes from renewable content in the EFL. That number can swing from as low as 0 percent all the way up to 100 percent, with the majority of plans that partially offset energy with renewable content hovering around 15 percent.

Like we said, fees don’t necessarily make for a bad plan — although it’s worth it to do the math to see if you can save with another provider. For example, compare TXU Energy’s Simple Rate 12 plan with its $9.95 base charge, alongside Direct Energy’s Live Brighter 12 plan with a smaller base charge, and Reliant’s Digital Discount plan with no base charge. We’ll use a Corpus Christi ZIP code and assume 1,000 kWh/month of energy use.
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Free electricity is a phrase you’ll hear a lot about when you’re shopping for a new energy plan. Unfortunately, these plans only offer free electricity on weekends or at night, depending on what energy companies are advertising. This is because there really is no such thing as completely free electricity. In fact, you’ll pay more for your electricity during those hours that aren’t free. For this reason, these plans are best for families who aren’t home during the day and people who work traditional, 9 – 5 jobs.

For example, shoppers for Texas electricity plans in the 77494 ZIP code in Katy, TX, could find 12-month plans for 6.8 cents/kWh in February; by June, electricity rates had increased 27 percent to 9.3 cents/kWh. As of early September, 12-month plans were up again, to 9.9 cents/kWh – a 6.5 percent hike from June and a 46 percent increase just since February.
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