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  2. Worcester, Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Worcester,_Massachusetts

    National Grid USA is the exclusive distributor of electric power to the city, though due to deregulation, customers now have a choice of electric generation companies. Natural gas is distributed by NSTAR Gas; only commercial and industrial customers may choose an alternate natural gas supplier.

  3. Smart grid - Wikipedia

    en.wikipedia.org/wiki/Smart_grid

    Background Historical development of the electricity grid. The first alternating current power grid system was installed in 1886 in Great Barrington, Massachusetts. At that time, the grid was a centralized unidirectional system of electric power transmission, electricity distribution, and demand-driven control.

  4. Incineration - Wikipedia

    en.wikipedia.org/wiki/Incineration

    Incinerators and other waste-to-energy plants generate at least partially biomass-based renewable energy that offsets greenhouse gas pollution from coal-, oil- and gas-fired power plants. The E.U. considers energy generated from biogenic waste (waste with biological origin) by incinerators as non-fossil renewable energy under its emissions caps.

  5. Energy policy of the United States - Wikipedia

    en.wikipedia.org/wiki/Energy_policy_of_the...

    The United States is a net importer of natural gas, most of it by pipeline from Canada, with a smaller amount of LNG from other sources. Net gas imports into the US peaked in 2007, when the country imported 16.4 percent of the natural gas it consumed, and was the world's largest net importer of natural gas.

  6. Waltham, Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Waltham,_Massachusetts

    Waltham (/ ˈ w ɔː l θ æ̃ m / WAWL-tham) is a city in Middlesex County, Massachusetts, United States, and was an early center for the labor movement as well as a major contributor to the American Industrial Revolution.

  7. Wind power - Wikipedia

    en.wikipedia.org/wiki/Wind_power

    Wind energy is the kinetic energy of air in motion, also called wind.Total wind energy flowing through an imaginary surface with area A during the time t is: = = =, where ρ is the density of air; v is the wind speed; Avt is the volume of air passing through A (which is considered perpendicular to the direction of the wind); Avtρ is therefore the mass m passing through A. ½ ρv 2 is the ...

  8. Biomass - Wikipedia

    en.wikipedia.org/wiki/Biomass

    Basically the mass part has shrunk more than the energy part, and the consequence is that the calorific value of torrefied biomass increases significantly, to the extent that it can compete with coals used for electricity generation (steam/thermal coals). The energy density of the most common steam coals today is 22–26 GJ/t.

  9. Wind power in Texas - Wikipedia

    en.wikipedia.org/wiki/Wind_power_in_Texas

    As a result, in winter the west Texas grid often had such a local surplus of power, that the price would fall below zero. According to Michael Goggin, electric industry analyst at AWEA, "Prices fell below US −$30/MWh (megawatt-hour) on 63% of days during the first half of 2008, compared to 10% for the same period in 2007 and 5% in 2006."