Volt – the volt is the International System of Units (SI) measure of electric potential or electromotive force. A potential of one volt appears across a resistance of one ohm when a current of one ampere flows through that resistance.
Voltage – the difference in electrical potential between any two conductors or between a conductor and ground. It is a measure of the electric energy per electron that electrons can acquire and/or give up as they move between the two conductors.
Waste energy – municipal solid waste, landfill gas, methane, digester gas, liquid acetonitrile waste, tall oil, waste alcohol, medical waste, paper pellets, sludge waste, solid byproducts, tyres, agricultural byproducts, closed-loop biomass, fish oil and straw used as fuel.
Water cycle – water constantly moves through a vast global cycle in which it evaporates from lakes and oceans, forms clouds, precipitates as rain or snow, then flows back to the ocean. The energy of this water cycle, which is driven by the sun, is tapped most efficiently with hydropower.
Water turbine – a turbine that uses water pressure to rotate its blades. Primarily used to power an electric generator.
Watt – a metric unit of power, usually used in electric measurements, which gives the rate at which work is done or energy used.
Well – a hole drilled in the Earth which, in the petroleum industry, is for the purpose of finding or producing crude oil or natural gas, or producing services related to their production.
Wellhead – the point at which the crude (and/or natural gas) exits the ground.
Wood energy – wood and wood products used as fuel, including round wood (cord wood), limb wood, wood chips, bark, sawdust, forest residues, charcoal, pulp waste and spent pulping liquor.