Constellation is one of the largest integrated energy suppliers in the US, providing electricity and natural gas to over 2.5 residential and commercial clients, including two-thirds of Fortune 100 companies. The company promotes renewable power, and offers energy management products and services for both homes and businesses. From energy procurement to energy efficiency and distributed energy solutions — the company helps its customers strategically buy, manage and use their energy.
You can sort, filter, and shop by pricing at YOUR specific usage level, which lets you shop and compare electricity plans based on the rates you’ll actually experience on your bill, inclusive of hidden fees and taxes. This ensures you’re not misled by the cheaper rates often advertised by electric providers…those “teaser rates” associated with higher usage levels that many households never enjoy because their usage level never reaches that pricing tier.
We've pioneered our techniques and grown our expertise in the retail energy industry for more than a decade. With hundreds of thousands of customers and firm investor backing, we're a company you can count on. Spark Energy is also proud to be a publically traded company: our NASDAQ ticker is SPKE. Visit our investor relations page for more information.
Ambit Energy provides electricity and natural gas services in deregulated markets across the United States, primarily marketed through a direct sales channel of more than 250,000 Independent Consultants. Based in Dallas, Texas, our company is focused on being the finest and most-respected retail energy provider in America, offering cost-effective choices for today’s energy consumer. In 2010, Ambit was named #1 Fastest-Growing Private Company in America by Inc. magazine, and we continue to pick up steam as the fastest-growing company in the retail energy sector today.
Texas currently produces and consumes more electricity than any other state in the country. This energy consumption is due to its size, but the ample land makes it a major producer of wind power – a renewable, or green, energy source. The environmentally friendly energy created by wind power is available to many Texas residents to supply the electricity in their home or business.

Anyone on a standard rate tariff is at risk of seeing rising energy bills – so one of the best ways to protect from energy price increases is to switch to a fixed rate tariff. This means that for the duration of the deal, the cost of your energy and gas will be fixed. You may be able to switch to a cheaper fixed price tariff at any point, or you may have to pay a fee if you switch before the end of the deal – so check your paperwork.


Constellation is one of the largest integrated energy suppliers in the US, providing electricity and natural gas to over 2.5 residential and commercial clients, including two-thirds of Fortune 100 companies. The company promotes renewable power, and offers energy management products and services for both homes and businesses. From energy procurement to energy efficiency and distributed energy solutions — the company helps its customers strategically buy, manage and use their energy.
Vista Energy Marketing combines years of top-flight experience in the wholesale energy commodities market purchasing electricity and natural gas with a passion for people. With over 100,000 residential and commercial customers in nine different states, Vista Energy stands out from a crowded field of retail energy company by delivering competitive energy prices and innovative plans that will solve the energy needs of our customers.

When the energy market became deregulated in a majority of Texas in 2002, residents and business owners in these regions earned the power to choose which retail electric provider would supply their electricity. In a deregulated energy market, you could have a range of options for electricity supply rates, which means doing research to find the best one for your needs.
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