Cavity wall insulation. Most homes built since 1920 have a gap between internal and external walls. Filling the cavity with insulating mineral wool and foam means cold air's kept out, and warm air stays in. It can save an average three-bedroom home up to £150/year. We've heard of certain cases where damp has formed after having cavity wall insulation installed, so make sure it's appropriate for your home.
It is often the case that the cheapest option available to you will be supplied by an energy company that you have not heard of. Do not let this put you off saving money on your gas and electricity bills. Small energy companies provide the same energy as the other, more expensive, ones but often for a much more competitive price. You don’t need to be concerned about these companies failing to be able to supply you with energy.

Yes, we're the best at comparing energy prices, but don't just take our word for it. Since 2006 uSwitch has been fully accredited by the Ofgem Confidence Code. With many energy comparison sites to choose from, uSwitch has been one of the longest standing signatories to the Ofgem code, and a primary contributor to achieving gas and electricity pricing transparency.
Should you choose a short-term, long-term, month-to-month, or prepaid plan? The short answer: it depends on your specific needs. How long do you anticipate living at your location? Are you deciding in the peak season (summer in Houston) or off season? All electricity providers in Houston offer a broad selection of plans for different contract lengths. Many also offer month-to-month and prepaid electricity plans. The bottom line is that everyone’s needs are different and all contract term lengths offer advantages and disadvantages.
Even though customers in deregulated cities routinely pay more for electricity, there is a bright spot. The gap between the average price paid for electricity between deregulated cities like Houston and regulated cities like San Antonio have dwindled to the narrowest point ever to 8.8 percent. Back in 2006, customers in deregulated cities were paying nearly 47 percent more for electricity than their counterparts in regulated cities.
The local electric company is the utility – that’s the company who owns the infrastructure, including the poles and power lines that deliver electricity to your home. They are who you call if your power goes out or there's an emergency. But in almost every city in Texas, you must choose another company to supply that energy, called a Retail Electric Provider (REP). These REPs, like Spark Energy, allow you to choose electricity plans that offer competitive prices and plans to meet your needs.
The offer information on the following pages is provided and maintained by Retail Electric Suppliers (RESs). While the ICC does not warrant that the information is a complete list of all residential offers in Illinois, RESs are required to honor prices listed here as a condition of posting their offers on this site. The ICC does not endorse or recommend any particular RES.
CenterPoint Intelligent Energy Solutions LLC, IES, which manages TrueCost, is not the same legal entity as CenterPoint Energy Resources Corp. (CERC) or CenterPoint Energy Houston Electric, LLC (CEHE), nor is IES regulated by the Railroad Commission of Texas or the Public Utility Commission of Texas. You do not have to buy products or services from IES in order to continue to receive quality regulated services from CERC or CEHE.

Just as you shop for other products and services, you may also be able to shop for an energy supplier. With choice, energy customers from large manufacturers to residential homeowners are able to shop for energy options from a diverse group of competitive suppliers certified by the Public Utilities Commission of Ohio (PUCO). As more suppliers are offering their services in your area, you have the opportunity to choose the company that supplies the generation of your electricity and supplies your natural gas.


Twenty-nine states have deregulated electricity, natural gas or both. That allows you to shop for the supply portion of your bill from alternative providers who may offer rates lower than the default supplier – usually a utility. Delivery services and billing will remain the responsibility of the local utility as they own the power lines and wires that keep the lights on.
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