As used in this chapter unless the context otherwise requires:

1. 1. “Addition” means new construction equal to or greater than twenty thousand square feet of usable floor space that is heated or cooled by a mechanical or electrical system and is joined to an existing facility.
2. 2. “Authority” means the economic development authority created in section 15.105.
3. 3. “Commissioner” means the state building code commissioner.
4. 4. “Director” means the director of the economic development authority.
5. 5. “Economic life” means the projected or anticipated useful life of a facility as expressed by a term of years.

6. 6. “Energy system” includes but is not limited to the following equipment or measures:

   1. a. Equipment used to heat or cool the facility.
   2. b. Equipment used to heat water in the facility.
   3. c. On-site equipment used to generate electricity for the major facility.
   4. d. On-site equipment that uses the sun, wind, oil, natural gas, coal, or electricity as a power source.
   5. e. Energy conservation measures in the facility design and construction that decrease the energy requirements of the facility.
7. 7. “Facility” means a building having twenty thousand square feet or more of usable floor space that is heated or cooled by a mechanical or electrical system.
8. 8. “Initial cost” means the moneys required for the capital construction or renovation of a facility or the construction of an addition.

9. 9. “Life cycle cost analysis” means an analytical technique that considers certain costs of owning, using, and operating a facility over its economic life including but not limited to the following:

   1. a. Initial costs.
   2. b. System repair and replacement costs.
   3. c. Maintenance costs.
   4. d. Operating costs, including energy costs.
   5. e. Salvage value.
10. 10. “Public agency” means a state agency, political subdivision of the state, school district, area education agency, or community college.
11. 11. “Renovation” means a project where alterations, that are not additions, to an existing facility exceed fifty percent of the value of a facility and will affect an energy system.

[C81, §470.1] 91 Acts, ch 253, §17, 18; 2009 Acts, ch 108, §23, 41; 2011 Acts, ch 118, §42 – 44, 89; 2016 Acts, ch 1109, §1, 2, 9