A company or individual that is not directly regulated as a utility. These entities produce power for their own use and/or sell it to regulated utilities.

The rate of flow of the wind undisturbed by obstacles.

The ratio of a photovoltaic cell's actual power to its power if both current and voltage were at their maxima. A key characteristic in evaluating cell performance.

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.

A wood or gas burning heating appliance that fits into the opening or protrudes on to the hearth of a conventional fireplace.

The trapping of light inside a semiconductor material by refracting and reflecting the light at critical angles; trapped light will travel further in the material, greatly increasing the probability of absorption and hence of producing charge carriers.

A measure of the efficiency of an appliance's energy efficiency.

A statement of the electric rate(s), terms, and conditions for electricity sale or supply.

The concept of capturing and converting the energy available in the motion of ocean waves to energy.

Both a noun and a verb to describe the exterior surface of building elements (walls, floors, ceilings, etc.) and furniture, and the process of applying it.

To exceed the design capacity of a device.

The ability of a building construction assembly (partition, wall, floor, etc.) to resist the passage of fire. The rating is expressed in hours.

The process of the absorption of heat from one location and its transfer to another for rejection or recuperation.

A hydropower plant that is operated at maximum allowable capacity for part of the day and is either shut down for the remainder of the time or operated at minimal capacity level.

The arithmetic wind speed over a specified time period and height above the ground (the majority of U.S. National Weather Service anemometers are at 20 feet (6.1 meters).

The transmission of electricity through power lines.

This is an independent regulatory agency within the U.S. DOE that has jurisdiction over interstate electricity sales, wholesale electric rates, natural gas pricing, oil pipeline rates, and gas pipeline certification. It also licenses and inspects private, ...

A solar energy conversion device that uses a trough covered with a highly reflective surface to focus sunlight onto a linear absorber containing a working fluid that can be used for medium temperature space or process heat or to operate a steam turbine fo ...

A refined petroleum product suitable for use as a fuel in internal combustion engines.

The maximum instantaneous wind speed (or velocity) that occurs within a specific period of time or interval.