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.

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.


Here’s something to watch out for: Constellation automatically re-ups your contract when your present contract expires, no matter which plan you choose. It’ll send you two notifications prior to re-enrollment, but if you miss those prompts, you have just until the first meter read of your new contract to exit it. After that, the $150 termination fee will apply. Constellation Energy and Just Energy are the only two companies in our lineup with this policy. The others allow your service to lapse back to your utility company if you don’t personally re-enroll.


You can choose month-to-month plans, longer-term contracts or even plans that allow you to pre-pay for electricity, so you know you're never using more energy than you can pay for. Reliant is here, along with our customer service team, to help you get the electricity plan you need and lower your electricity consumption (and electricity bill) wherever you can. 

*Qualifying purchases. 1 membership per 12 months. Meerkat Meals – 2 for 1 on equivalent starters, mains and desserts. Cheapest free. Sunday to Thursday. Participating restaurants. Booking required, max 6 people. Excl Kids meals, drinks and certain days. App only. Meerkat Movies – 2 for 1 on Tuesday or Wednesday. Participating cinemas. Standard tickets only. Cheapest ticket free. Please note your claim may take up to 48 hours to validate. Rewards T&Cs apply
PECO wants to increase the amount it charges residential customers 3.2 percent; Duquesne Light wants a nearly 9 percent hike. Both would take effect January 2019. What's a customer to do? Looking for ways to cut the electricity supply portion of your energy billl? That's where ChooseEnergy.com can help. Enter your ZIP above to see whether you can find a cheaper supply rate to offset the likely increases in transmission and delivery costs.
We offer AutoPay and average billing payment options to help save you time and money when you're paying your bill. And if you ever have issues with your electricity plan or your bill that you can't solve alone, you can contact our customer service team anytime you need help. We're available 24/7 through online chat or by phone to answer any questions you might have about your home electricity account. 
ElectricityPlans makes shopping for electricity plans simple and intuitive. We give you the search tools you need to narrow your electricity plan search to specific contract lengths. In addition, you can use advanced search to narrow the search for the perfect electricity plan even further by searching for 100% renewable, prepaid plans, or electricity + extra stuff, for example. We also show each plan’s popularity over the past 30 days so you know what other electricity shoppers have selected.

*Only new customer successful enrollments with Constellation. Cards are issued by Virtual Rewards Center. Valid email address required for receipt of Gift card. Gift cards will not have cash access. For any questions about your Gift card, call our customer care team at 1-877-997-9995. The listed merchants are in no way affiliated with Constellation nor are the listed merchants to be considered sponsors or co-sponsors of this program. Use of merchant names and/or logos is by the permission of each respective merchant and all trademarks are the property of their respective owners. Terms and conditions are applied to gift cards/certificates. Please see the merchant gift card/gift certificate for additional terms and conditions, which are subject to change at merchant's sole discretion. Constellation will share your name and email address with Virtual Reward Center for reward fulfillment only. Reward link expires in 3 months.
The mid to late 1880s saw the introduction of alternating current (AC) systems in Europe and the U.S. AC power had an advantage in that transformers, installed at power stations, could be used to raise the voltage from the generators, and transformers at local substations could reduce voltage to supply loads. Increasing the voltage reduced the current in the transmission and distribution lines and hence the size of conductors and distribution losses. This made it more economical to distribute power over long distances. Generators (such as hydroelectric sites) could be located far from the loads. AC and DC competed for a while, during a period called the War of Currents. The DC system was able to claim slightly greater safety, but this difference was not great enough to overwhelm the enormous technical and economic advantages of alternating current which eventually won out.[1]
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