Since the 1990s, many regions have opened up the generation and distribution of electric power to provide a more competitive electricity market. While such markets can be abusively manipulated with consequent adverse price and reliability impact to consumers, generally competitive production of electrical energy leads to worthwhile improvements in efficiency. However, transmission and distribution are harder problems since returns on investment are not as easy to find.
The business model behind the electric utility has changed over the years playing a vital role in shaping the electricity industry into what it is today; from generation, transmission, distribution, to the final local retailing. This has occurred prominently since the reform of the electricity supply industry in England and Wales in 1990. In some countries, wholesale electricity markets operate, with generators and retailers trading electricity in a similar manner to shares and currency. As deregulation continues further, utilities are driven to sell their assets as the energy market follows in line with the gas market in use of the futures and spot markets and other financial arrangements. Even globalization with foreign purchases are taking place. One such purchase was when the UK’s National Grid, the largest private electric utility in the world, bought New England’s electric system for $3.2 billion. Between 1995 and 1997, seven of the 12 Regional Electric Companies (RECs) in England and Wales were bought by U.S. energy companies. Domestically, local electric and gas firms have merged operations as they saw the advantages of joint affiliation, especially with the reduced cost of joint-metering. Technological advances will take place in the competitive wholesale electric markets, such examples already being utilized include fuel cells used in space flight; aeroderivative gas turbines used in jet aircraft; solar engineering and photovoltaic systems; off-shore wind farms; and the communication advances spawned by the digital world, particularly with microprocessing which aids in monitoring and dispatching.
Variable Rate: With a variable rate, you stand closer to the fire. Rather than keep your costs separate from market conditions, you experience the rise and fall of price alongside your provider. You profit when supply exceeds demand, but could pay through the nose if the electricity grid becomes overtaxed. That usually means a higher bill in the summer and winter (when demand is at its highest) and a lower one in the fall and spring. A variable rate plan is best for people interested in staying on top of market changes – when prices get too exorbitant, there’s no contract and no cancellation fee if you want to try a new provider.
An additional bill was passed in 1999 that helped further establish a competitive electricity market by creating a price floor to prevent established energy providers from underselling emerging providers. In 2002, Texas finalized deregulation when the Public Utility Commission gave ERCOT the responsibility of managing and monitoring the Texas electricity market. The market opened up to around 6 million Texas power customers.
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. 
Still, we like that if you choose to re-up with FirstEnergy again at the end of your initial term, you won’t have to worry whether you’re enrolling at an expensive time of year. First, since it offers just two options, constant for years, its prices are set with the long haul in mind. Second, since the electricity grid in Pennsylvania is more taxed during winter than any other season (space heating accounts for 50 percent of household electricity consumption in PA; air conditioning just three percent), signing up in summer means prices won’t be temporarily inflated.