Know that Green Mountain’s cheapest advertised plans are all variable rate plans. “Pollution Free,” “Pollution Free Try 3,” or “SolarSPARC 10 Try 3” all advertise a great initial rate — a full cent below Pennsylvania’s 8.49 cent “price to compare” — but its variable rates means the company can raise them at any time. The two “Try 3” plans just lock in the low introductory rate for three months instead of one. The flipside of fixed rate: Should prices fall, you’ll be locked into a contract with a constant, elevated rate for two more months.

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.

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.[2] Between 1995 and 1997, seven of the 12 Regional Electric Companies (RECs) in England and Wales were bought by U.S. energy companies.[3] 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.[4]

1Security and Home Automation Services are offered by NRG Connected Home LLC d/b/a Reliant, TXB19469, 1201 Fannin Street, Houston Texas 77002. Electricity services are offered by Reliant Energy Retail Services, LLC d/b/a Reliant, PUCT Certificate #10007. Both are wholly owned by NRG Energy, Inc. Terms and conditions apply. For complete terms and conditions, visit

Although electricity had been known to be produced as a result of the chemical reactions that take place in an electrolytic cell since Alessandro Volta developed the voltaic pile in 1800, its production by this means was, and still is, expensive. In 1831, Michael Faraday devised a machine that generated electricity from rotary motion, but it took almost 50 years for the technology to reach a commercially viable stage. In 1878, in the United States, Thomas Edison developed and sold a commercially viable replacement for gas lighting and heating using locally generated and distributed direct current electricity.