A registered trademark of an agency of the state of Nebraska, for an automotive fuel containing a blend of 10 percent ethanol and 90 percent gasoline.

The rate at which electricity is delivered to or by a system, part of a system, or piece of equipment expressed in kilowatts, kilovoltamperes, or other suitable unit, at a given instant or averaged over a specified period of time.

Features and vegetation on the outside of or surrounding a building for aesthetics and energy conservation.

A pole used to assist in raising a tower.

A configuration of an electrical circuit in which the voltage is the same across the terminals. The positive reference direction for each resistor current is down through the resistor with the same voltage across each resistor.

The amount of useful energy produced by a system less the amount of energy required to produce the fuel.

The process by which materials expel or release gasses.

A wood-burning appliance for space and/or water heating and/or cooking.

A graph representing the relationship between the power available from the wind and the wind speed. The power from the wind increases proportionally with the cube of the wind speed.

A type of water heater that has no storage tank thus eliminating storage tank standby losses. Cold water travels through a pipe into the unit, and either a gas burner or an electric element heats the water only when needed.

An electrical inverter that inverts direct current electricity to alternating current electricity, and that uses another alternating current source, such as an electric power transmission and distribution network (grid), for voltage and frequency referenc ...

One thousand kilowatts, or 1 million watts; standard measure of electric power plant generating capacity.

A wood or gas burning appliance that is primarily used to provide ambiance to a room. Conventional, masonry fireplaces without energy saving features, often take more heat from a space than they put into it.

A measure of the efficiency of converting a fuel to energy and useful work; useful work and energy output divided by higher heating value of input fuel times 100 (for percent).

A type of water heater that circulates water through a heat exchanger in a boiler. The heated water then flows into an insulated storage tank.

The ratio of the minimum amount of work or energy required to perform a task to the amount actually used.

The heat that flows from the building interior, through the building envelope to the outside environment.

Individual rooms or zones in a building where temperature is controlled separately from other rooms or zones.

A passive solar heating system in which the sun warms a heat storage element, and the heat is distributed to the interior space by convection, conduction, and radiation.

A seal used to prevent the leakage of fluids, and also maintain the pressure in an enclosure.