KWh

kilowatt hour, the standard unit of energy used in the electric power industry, one kilowatt hour is the amount of energy that would be generated by the one kilowatt generator for one hour

MW

megawatt, one thousand kilowatts or one million watts

MWh

megawatt hour, one thousand KWh

GW

gigawatt, one thousand megawatts or one million kilowatts

GWh

gigawatt hour, one thousand MWh or one million KWh

TW

terawatt, one million megawatts or one billion kilowatts

TWh

terawatt hour, one million MWh or one billion KWh

Standard Coal

coal with energy content of 7000 Kcal/kg

Coal Sludge

by-product of coal washing process in coal mining, which contains coal powder, mud and rock

Gangue

by-product of coal washing and screening process in coal mining, whose energy content is normally lower than 3000 Kcal/kg

Auxiliary Power

electricity consumed by a power plant in power generation process

Gross Generation

total amount of electricity produced by a power plant in a specific period, including auxiliary power

Planned Output

annually determined gross generation target for a power plant, which is the basis for determining power sales

Excess Output

amount by which total output of a power plant in a particular year exceeds its planned output for such year

Power Sale

actual amount of electricity sold by a power plant in a specific period, which equals gross generation less auxiliary power and losses incurred during transmission from power plant to power grid

Steam Sale

actual amount of steam sold by a cogeneration plant in a specific period, which equals total steam output less losses incurred during transmission from cogeneration plant to steam customers

Installed Capacity

manufacturers’ rated power output of a generating unit, usually denominated in MW

Steam Extraction Capacity

manufacturers’ rated steam output of a steam turbine, usually denominated in ton/h

Utilization Hours

amount of electricity produced in a specific period divided by average installed capacity in such period

Thermal Efficiency

ratio of heat and power generated by a power plant to overall heat value from the fuel consumed

Heat-to-Power Ratio

ratio of heat generation to power generation of a cogeneration plant