PHOTOVOLTAIC SYSTEMAn active solar energy system that converts solar energy directly into electricity.
RATED NAMEPLATE CAPACITYThe maximum rated output of electric power production of the photovoltaic system in watts of direct current (DC).
SOLAR ENERGYRadiant energy received from the sun that can be collected in the form of heat or light by a solar collector.
SOLAR ENERGY SYSTEMA device or structural design feature, a substantial purpose of which is to provide daylight for interior lighting or provide for the collection, storage and distribution of solar energy for space heating or cooling, electricity generation, or water heating.
SOLAR ENERGY SYSTEM, GROUND-MOUNTEDAn active solar energy system that is structurally mounted to the ground and is not roof-mounted; may be of any size (small-, medium- or large-scale).
SOLAR ENERGY SYSTEM, LARGE-SCALEAn active solar energy system that occupies more than one acre of surface area (equivalent to a rated nameplate capacity of about 250 kW DC or greater).
SOLAR ENERGY SYSTEM, MEDIUM-SCALEAn active solar energy system that occupies more than 1,750 square feet of surface area but less than one acre of surface area (equivalent to a rated nameplate capacity of about 10 to 250 kW DC).
SOLAR ENERGY SYSTEM, OFF-GRIDA photovoltaic solar energy system in which the circuits energized by the solar energy system are not electrically connected in any way to electric circuits that are served by an electric utility.
SOLAR ENERGY SYSTEM, ROOF-MOUNTEDAn active solar energy system that is structurally mounted to the roof of a building or structure; may be of any size (small-, medium- or large-scale).
SOLAR ENERGY SYSTEM, SMALL-SCALEAn active solar energy system that occupies 1,750 square feet of surface area or less (equivalent to a rated nameplate capacity of about 10 kW DC or less).
SOLAR THERMAL SYSTEMAn active solar energy system that uses collectors to convert the sun's rays into useful forms of energy for water heating, space heating, or space cooling.