*Save Over £390 - Over 10% of the estimated quotations raised by users of the Simply Switch Website to switch their gas and electricity suppliers between 01/02/2015 - 01/06/2015 produced a predicted annual saving of £390 or more. Current combined spend for gas and electricity of between £84 and £6869. Savings may have included Direct Debit and online discounts. Energy prices vary by usage and postcode.
To be clear, no matter fuel portfolio of the plan you choose, your electricity’s make-up will be identical to your neighbors’. Depending on where you live, that could a mix of renewable and fossil fuels. Certificates offset your electricity use by putting an equal amount of clean energy into the electricity grid. If a plan is 100% renewable, that means it’s 100% offset with certificates.
Ironically, technology can make the utilities’ problem worse, not better—at least in the short term. In the past, grids were developed because it was cheaper to generate large quantities of power and distribute it over wide distances, rather then generate smaller quantities closer to the place of use. It is for this reason that electricity is seen as a business that benefits from “economies of scale”.
FirstEnergy’s online shopping experience is woefully outdated, which makes it harder than usual to get to the fine print. You’ll need to take the first step of signing up — follow the Enroll Now! Link — to get “Terms and Conditions” to appear. The website also pays the typical lip service to the green movement, but FirstEnergy plants generate over 95 percent of the company’s total electricity from conventional fuels.
Green Mountain has been behind massive green power projects like supplying the Empire State Building with renewably-offset power, and its nonprofit organization Sun Club provides grants for environmental projects, like Urban REAP (Urban Renewable Energy and Agriculture Project), an innovative community greenhouse that uses solar power, aquaponics, and composting.
In some states, utilities can also generate and sell electricity, but customers aren’t forced to buy the electricity from the utility company. They may choose from either the utility or available electricity providers. Before signing up for electricity service, we recommend checking the local utility’s electricity supply rate by checking their rates online or contacting them directly.
Also, your plan's term length could be determined by how long you plan to reside in McAllen. If you're a renter or plan to move frequently, a month-to-month, six-month or one-year supply plan might work best, whereas homeowners might consider longer-term plans that last for two to three years. Once you find a plan you're comfortable with, look into potential customer perks such as a referral program, online energy tracking or energy conservation ideas.
Retailers Include: AEP Energy , APG&E Energy Solutions , Calpine Energy Solutions , Constellations NewEnergy, INC , Crius Energy , Direct Energy Services LLC , Dynegy , ENGIE Resources , Entrust Energy , IGS Energy , Just Energy , Liberty Power , Next Era Energy Services , Nordic Energy Services, LLC , NRG Energy INC , Source Energy , Spark Energy , Starion Energy , Stream Energy , Talen Energy , TransCanada Power Marketing LTD. 
Electric companies in Maryland post their rates for residential customers on their web sites. See list of electric company web sites in the column at left. To find out about the rates offered by electricity suppliers in your area you will need to contact those suppliers directly. The Maryland Public Service Commission maintains a list of licensed electricity suppliers at: http://webapp.psc.state.md.us/intranet/supplierinfo/electricsupplier_new.cfm.