Freshly cut, unseasoned, wood.

Materials with high thermal energy storage capacity contained in or part of a building's walls, floors, or freestanding elements.

see Solar Spectrum above.

A source of power (electricity) that can displace power from another source so that source's power can be transmitted to more distant loads.

A popular term for energy produced from renewable energy resources.

A coating applied to the surface of the glazing of a window to reduce heat transfer through the window.

The interior area of a building, calculated in square feet or meters.

The value or purchasing power of a dollar in a specified year carried forward or backward.

The space between a hanging ceiling and the floor above or roof; usually contains HVAC ducts, electrical wiring, fire suppression system piping, etc.

The potentially useful byproducts of ethanol fermentation process.

Salt mixtures with potential applications as solar thermal energy storage materials.

A solid that contains pores; normally, it refers to interconnected pores that can transmit the flow of fluids. (The term refers to the aquifer geology when discussing sites for CAES.)

Water in vapor form; used as the working fluid in steam turbines and heating systems.

The process of controlling indoor moisture levels and condensation.

A solar photovoltaic device with a specified area.

A measure of the unavailable or unusable energy in a system; energy that cannot be converted to another form.

Those gases, such as water vapor, carbon dioxide, tropospheric ozone, methane, and low level ozone that are transparent to solar radiation, but opaque to long wave radiation, and which contribute to the greenhouse effect.

The air that is supplied to the combustion chamber of a furnace.

The quantity of heat that a cooling appliance is capable of removing from a room in one hour.

Thermal energy that is used in agricultural and industrial operations.