The maximum power that a generating unit, generating station or other electrical apparatus can supply, usually expressed in megawatts.
Carbon Dioxide (CO2)
A colourless, odourless, non-poisonous gas that is a normal part of the ambient air. Carbon dioxide is also a product of fossil fuel combustion. It is a greenhouse gas that traps terrestrial (i.e., infrared) radiation and contributes to the potential for global warming.
Quantity of power produced by a generating station over a period of time, measured in megawatt-hours (MWh).
Represents the finely divided particles of ash suspended in gases resulting from the combustion of fuel. Electrostatic precipitators are used to remove fly-ash from the gases prior to the release from a power plant’s stack.
Gigawatt hour (GWh)
One million kilowatt-hours.
The basic unit of electric energy equal to one kilowatt of power supplied to or taken from an electric circuit steadily for one hour.
Unit of electrical power to measure the generating capability of a generating station or the maximum demand of an electricity consumer.
One thousand kilowatt-hours.
Net Capacity Factor
The actual station generation of power to the grid in MW divided by the ideal maximum generation of power to the grid in MW possible.
Nitrogen Oxides (NOX)
Gases consisting of one atom of nitrogen and varying numbers of oxygen atoms. Nitrogen oxides are produced, for example, by the combustion of fossil fuels in vehicles and electric power plants. In the atmosphere, nitrogen oxides can contribute to formation of photochemical ozone (smog) and impair visibility.
Open Access Transmission Tariff
Establishes non-discriminatory access to the transmission system for generators and customers inside and outside the province and generates revenues for Transco to operate and maintain the transmission system, based on the cost of providing services.
An emulsion containing about 70 per cent bitumen (thick oil) and 30 per cent water. The bitumen is extracted from the Orinoco belt in Venezuela in the northern basin of the Orinoco River.
Power Purchase Agreements
Supply contracts between two parties for the supply of electricity.
Renewable Portfolio Standard
Requirement that a certain amount of electricity sold in a competitive market includes some amount produced from renewable sources.
Sulphur Dioxide (SO2)
Belongs to a family of sulphur oxide gases (SOX) and is a colourless gas. It is formed from the sulphur contained in raw materials such as coal, oil and metal-containing ores used during combustion and refining processes. Flue gas desulphurization units are used to remove SO2 from the gases prior to the release from a power plant’s stack.
Standard Service Supplier
The provider responsible for supplying adequate capacity and energy to meet customer demand for those customers not served by a competitive supplier. Disco is designated as the standard service supplier for New Brunswick.
System Average Interruption Duration Index (SAIDI)
The average total duration of interruptions during the year.
System Average Interruption Frequency Index (SAIFI)
The average number of times each customer on the distribution system is without power annually.