A measure of the flow of current (in amperes) over one hour.

A device that converts the mechanical energy of rotation into electricity based on electromagnetic induction. An electric voltage (electromotive force) is induced in a conducting loop (or coil) when there is a change in the number of magnetic field lines ...

The process of removing a power plant, apparatus, equipment, building, or facility from operation.

Energy required to operate mechanical components of an energy system, or a source of energy or energy supply system to back-up another.

One quadrillion Btu. (1,000,000,000,000,000 Btu)

The ratings under which specified appliances convert energy sources into useful energy, as determined by procedures established by the U.S. Department of Energy.

A fan mounted on an attic wall used to exhaust warm attic air to the outside.

The cost of producing electricity up to the point of the powerplant busbar.

The positive pole or electrode of an electrolytic cell, vacuum tube, etc. (see also sacrificial anode).

An interior court to which rooms open.

A combustible gas created by anaerobic decomposition of organic material, composed primarily of methane, carbon dioxide, and hydrogen sulfide.

An interior wall made of water filled containers for absorbing and storing solar energy.

A hard, dense type of coal, that is hard to break, clean to handle, difficult to ignite, and that burns with an intense flame and with the virtual absence of smoke because it contains a high percentage of fixed carbon and a low percentage of volatile matt ...

The annual solar savings of a solar building is the energy savings attributable to a solar feature relative to the energy requirements of a non-solar building.

The space-conditioning load of a building.

A category of electric power producer established under the Public Utility Regulatory Policy Act (PURPA) of 1978, that includes small-power producers (SPP) who use renewable sources of energy such as biomass, geothermal, hydroelectricity, solar (thermal a ...

The conversion of biomass into a gas, by biogasification (see above) or thermal gasification, in which hydrogen is produced from high-temperature gasifying and low-temperature pyrolysis of biomass.

This is the voltage-ampere requirement of a device designed to convert electric energy to a non-electrical form.

The presence of contaminants in the air in concentrations that prevent the normal dispersive ability of the air, and that interfere with biological processes and human economics.

Referring to alterations in the environment due to the presence or activities of humans.