For the purposes of this subchapter:

(1) “Cost effective energy efficiency projects” means energy efficiency improvements including, but not limited to, wall, floor and ceiling/attic insulation, lighting and electrical upgrades, window replacements and HVAC tune-ups and replacements with a return on investment (ROI) of less than 3 years based upon materials and labor.

(2) “Customer” means any person that has constructed, purchased or leased Renewable Energy Technology and placed it in service in this State for the purpose of generating or receiving energy in this State, including the owner/operator of any building or facility, but not the occupants thereof, that supplies energy to the occupants of such building or facility.

(3) “Person” means and includes an individual, a trust, estate, partnership, limited liability company, association, company or corporation.

(4) “Renewable energy technology” or “alternative energy technology” means and includes any of the following machinery, equipment, or real property:

a. Hydroelectric generators, located at existing dams or in free-flowing waterways, and related devices for water supply and control, and converting, conditioning, and storing the electricity generated;

b. Wind equipment, required to capture and convert wind energy into electricity or mechanical power, and related devices for converting, conditioning and storing the electricity produced;

c. Solar energy equipment, and related devices necessary for collecting, storing, exchanging, conditioning or converting solar energy to other useful forms of energy;

d. Geothermal heat pumps and geothermal heat pump systems;

e. Fuel cells and fuel cell systems; and

f. Biodiesel manufacturing facilities.

(5) “Solar energy equipment” means any equipment that uses solar radiation as a substitute for traditional energy for water heating, active space heating and cooling, passive heating, daylighting, generating electricity, distillation, desalinization, detoxification or the production of industrial or commercial process heat, and includes related devices necessary for collecting, storing, exchanging, conditioning or converting solar energy to other useful forms of energy.

74 Del. Laws, c. 38, § 1; 74 Del. Laws, c. 87, § 1; 75 Del. Laws, c. 160, § 1; 77 Del. Laws, c. 452, § 1.