Conn. Agencies Regs. § 16a-14-101
For the purposes of these regulations, the following terms shall have the meanings assigned in this section, unless the context clearly indicates to the contrary:
"Secretary" means the Secretary of the Office of Policy and Management.
"Renewable Energy System" means a system of related equipment, including structural components of a building specifically designed to retain heat derived from solar energy, which system is designed for the collection, transfer, storage, conversion and use of solar energy, including:
for the purpose of space heating or cooling, water heating or generation of electricity or any other application which, in the absence of such system would require the use of a conventional energy source, but shall not include woodburning stoves.
"Small Power Production Facility" means a renewable energy system which is designed to generate electricity and has been determined by the secretary to meet the size and fuel use standards set out in 18 CFR 292.204(a) and (b).
"Cogeneration System" means a cogeneration facility, as defined in 18 CFR 292.202(c), the primary purpose of which is reducing the use of conventional energy sources, and which has been determined by the secretary to meet the operating and efficiency standards set out in 18 CFR 292.205(a) or (b).
"Parts or components of Cogeneration Systems" and "Parts or components of Small Power Production Facilities" means only those parts or components which are integral and essential to the operation of such systems and includes those parts referred to in Section 16a-14-102.
"Active Solar System" means a system which converts the sun's energy into thermal energy and may transport this energy, when applicable, to a storage device through a heat transport medium such as air or a liquid. Heat is withdrawn either from the transport medium or from the storage device and used to provide space conditioning for the building or structure or service hot water. An active solar system shall also include a system using solar energy as defined in these regulations for the production of electricity or mechanical energy.
"Building" means any residential, commercial, industrial or other structure as defined in the state building code.
"Eligible" means that a system or piece of equipment qualifies to be included in the determination of the amount of the exemption pursuant to section 12-412(39) of the Connecticut general statutes and complies with the standards specified in these regulations.
"Commercial Solar Equipment" means equipment manufactured for sale and which, when connected together, constitutes a solar energy system.
"Site Built System" means a solar system, utilizing collectors, constructed from basic materials where the collectors are assembled on the premises of final use by a contractor.
"Self Built" means a solar energy collector or system using a collector built from basic materials and installed by the owner or renter of the building.
"Passive Solar Heating and/or Cooling System" means
"Direct Gain" means solar radiation passes through the living space before being stored in the thermal mass for long term heating.
"Indirect Gain" means a thermal mass collects and stores heat directly from the sun and then transfers heat to the living space.
"Isolated Gain" means solar collection and storage are thermally isolated from the living spaces of the building.
"Solar Energy" means energy which has recently originated in the sun in the form of direct and diffuse solar radiation.
"Thermal Mass Wall," including but not limited to Trombe walls, water walls and drum walls, means a wall either directly or indirectly capable of exposure to solar radiation. Such wall may function as a combination heat sink and wall, and shall include external glazing or some other method which creates a heat trap for penetrating solar radiation.
"Thermal Contact Ceiling" means a combined roofing and heating system composed of containers filled with water or other heat storage medium placed above the roof beams of a building and utilized as a heat sink for solar radiation during the daylight hours and as a thermal storage device and insulator during the nocturnal hours. Some provision shall be made to reduce heat loss at night and during cold weather when little sunlight is available, as a means of retaining absorbed heat. During the cooling season, this operation may be reversed to provide a cooling effect.
"Heat Transportation System" means that portion of a solar heating and/or cooling system used to transfer heat from the collectors to a point of use or storage through pipes in liquid systems or ducts in warm air systems.
"Collector" means that component of a solar energy system that receives direct or diffuse solar radiation to convert it to thermal energy to be ultimately used for space conditioning or service water heating. The device contains an absorber and flow passages to carry the transfer medium either liquid or gaseous, to be heated. This assembly is surrounded by a casing and one or more layers of glazing material.
"Biomass" means non-fossil plant material which is used for fuel in direct combustion.
Conn. Agencies Regs. § 16a-14-101