A unit of measure for an electrical current; the amount of current that flows in a circuit at an electromotive force of one Volt and at a resistance of one Ohm. Abbreviated as amp.
A measure of the flow of current (in amperes) over one hour.
Standards established by the U.S. Congress for energy consuming appliances in the National Appliance Energy Conservation Act (NAECA) of 1987, and as amended in the National Appliance Energy Conservation Amendments of 1988, and the Energy Policy Act of 1992 (EPAct). NAECA established minimum standards of energy efficiency for refrigerators, refrigerator-freezers, freezers, room air conditioners, fluorescent lamp ballasts, incandescent reflector lamps, clothes dryers, clothes washers, dishwashers, kitchen ranges and ovens, pool heaters, television sets (withdrawn in 1995), and water heaters. The EPAct added standards for some fluorescent and incandescent reflector lamps, plumbing products, electric motors, and commercial water heaters and Heating, Ventilation, and Air Conditioning (HVAC) systems. It also allowed for the future development of standards for many other products. The U.S. Department of Energy (DOE) is responsible establishing the standards and the procedures that manufacturers must use to test their models. These procedures are published in the Code of Federal Regulations (10 CFR, Ch. II, Part 430), January 1, 1994 (Federal Register).
Abbreviation for the American Society of Heating, Refrigeration, and Air-Conditioning Engineers.
Abbreviation for the American Society for Testing and Materials, which is responsible for the issue of many standard methods used in the energy industry.
A type of electric generator that produces alternating current that matches an existing power source.
The process of determining energy consumption, by various techniques, of a building or facility.
Automatic (or Remote) Meter Reading System
A system that records the consumption of electricity, gas, water, etc, and sends the data to a central data accumulation device.
Appliance Energy Efficiency Ratings
The ratings under which specified appliances convert energy sources into useful energy, as determined by procedures established by the U.S. Department of Energy
Describes the reliability of power plants. It refers to the number of hours that a power plant is available to produce power divided by the total hours in a set time period, usually a year.
The demand on, or the power output of, an electrical system or any of its parts over an interval of time, as determined by the total number of kilowatt-hours divided by the units of time in the interval.
The total cost of production divided by the total quantity produced.
42 U.S. gallons (306 pounds of oil, or 5.78 million Btu).
The power output of a power plant that can be continuously produced.
The minimum demand experienced by a power plant.
Baseload Power Plant
A power plant that is normally operated to generate a base load, and that usually operates at a constant load; examples include coal fired and nuclear fueled power plants.
An energy storage device composed of one or more electrolyte cells.
Battery Energy Storage
Energy storage using electrochemical batteries. The three main applications for battery energy storage systems include spinning reserve at generating stations, load leveling at substations, and peak shaving on the customer side of the meter.
Biomass converted directly to energy or converted to liquid or gaseous fuels such as ethanol, methanol, methane, and hydrogen.
British Thermal Unit (Btu)
The amount of heat required to raise the temperature of one pound of water one degree Fahrenheit; equal to 252 calories.
Building Heat-Loss Factor
A measure of the heating requirements of a building expressed in Btu per degree-day.
The relationship of a building to true south, as specified by the direction of its longest axis.
Building Overall Energy Loss Coefficient-Area Product
The factor, when multiplied by the monthly degree-days, that yields the monthly space heating load.
Building Overall Heat Loss Rate
The overall rate of heat loss from a building by means of transmission plus infiltration, expressed in Btu per hour, per degree temperature difference between the inside and outside.
The load that a power generation unit or other electrical apparatus or heating unit is rated by the manufacture to be able to meet or supply.
a measure of the impact our activities have on the environment, and in particular climate change. It relates to the amount of greenhouse gases produced in our day-to-day lives through burning fossil fuels for electricity, heating and transportation etc.
The carbon footprint is a measurement of all greenhouse gases we individually produce and has units of tonnes (or kg) of carbon dioxide equivalent.
can be used to compensate for the emissions produced by funding an equivalent carbon dioxide saving somewhere else.