Ecotricity is a British energy company based in Stroud, Gloucestershire, specialising in selling green energy to consumers that it primarily generates from its 87.2-megawatt wind power portfolio. It is built on the principle of heavily reinvesting its profit in building more of its own green energy generation.

Mark Group Limited is a UK based energy advice and installation company, who focus upon energy efficiency. Mark Group went into administration on 7 October 2015.

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Tesla, Inc. ( TEZ-lə or TESS-lə) is an American multinational automotive and clean energy company.

Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating.

Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. A long conductor used to facilitate such movement is called a transmission line.

Vitol (pronounced Vee-Tol) is a Swiss-based Dutch multinational energy and commodity trading company that was founded in Rotterdam in 1966 by Henk Viëtor. Vitol has over 40 offices worldwide, with its largest operations in Geneva, Houston, London, and Singapore.

The economy of Papua New Guinea (PNG) is largely underdeveloped with the vast majority of the population living below the poverty line. It is dominated by the agricultural, forestry, and fishing sector and the minerals and energy extraction sector.