A type of heating fuel derived by refining crude oil that has a boiling range at atmospheric pressure from 400 degrees to 550 degrees F.

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

The temperature at which a material ignites.

The use of direct, diffuse, or reflected sunlight to provide supplemental lighting for building interiors.

A type of heat pump that transfers heat in outdoor air to water for space or water heating.

An interior court to which rooms open.

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.

An agency of the U.S. Dept. of Agriculture that makes loans to states and territories in the U.S. for rural electrification and the furnishing of electric energy to persons in rural areas who do not receive central station service. It also furnishes and i ...

Biomass converted directly to energy or converted to liquid or gaseous fuels such as ethanol, methanol, methane, and hydrogen.

The ratio of the average load on (or power output of) a generating unit or system to the capacity rating of the unit or system over a specified period of time.

A chemical change in a substance that results from the passage of an electric current through an electrolyte. The production of commercial hydrogen by separating the elements of water, hydrogen, and oxygen, by charging the water with an electrical current ...

The amount of electromotive force, measured in volts, that exists between two points.

The process of decomposing biomass with anaerobic bacteria to produce biogas.

The ratio of light reflected by a surface to the light falling on it.

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

A wall that carries ceiling rafters or roof trusses.

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

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

Microorganisms that live in oxygen deprived environments.

A measure of seasonal or annual efficiency of a central air conditioner or air conditioning heat pump. It takes into account the variations in temperature that can occur within a season and is the average number of Btu of cooling delivered for every watt- ...