Colorado Code
Article 4 - Valuation of Public Utilities
§ 39-4-101. Definitions

As used in this article 4, unless the context otherwise requires:

(2.3) "Biomass energy facility" means a new facility first placed in production on or after January 1, 2010, that uses real and personal property, including leaseholds and easements, to generate and deliver to the interconnection meter any source of electrical or mechanical energy by combusting only biomass or biosolids derived from the treatment of wastewater and that is not primarily designed to supply electricity for consumption on site.
(2.4) "Clean energy resource" has the same meaning as set forth in section 40-2-125.5 (2)(b).
(2.5) Repealed.
(2.6) "Energy storage system" means commercially available technology that is capable of retaining electricity, storing the energy for a period of time, and delivering the electricity after storage by chemical, thermal, mechanical, or other means. "Energy storage system" does not include a solar energy facility, as defined in subsection (3.5) of this section, or a wind energy facility, as defined in subsection (4) of this section.
(2.7) "Geothermal energy facility" means a new facility first placed in production on or after January 1, 2010, that uses real and personal property, including but not limited to leaseholds and easements, to generate and deliver to the interconnection meter any source of electrical or mechanical energy by harnessing the heat energy of groundwater or the ground and that is not primarily designed to supply electricity for consumption on site.















(3.5) "Solar energy facility" means a new facility first placed in production on or after January 1, 2009, that uses real and personal property, including but not limited to one or more solar energy devices, as defined in section 38-32.5-100.3 (2), leaseholds, and easements, to generate and deliver to the interconnection meter any source of electrical, thermal, or mechanical energy in excess of two megawatts by harnessing the radiant energy of the sun, including any connected device for which the primary purpose is to store energy, and that is not primarily designed to supply electricity for consumption on site.


Source: L. 64: R&RE, p. 688, § 1. C.R.S. 1963: § 137-4-1. L. 76: Entire section amended, p. 768, § 1, effective April 26; entire section amended, p. 759, § 16, effective July 1, 1977. L. 81: (2.5) added and (3) amended, p. 1854, §§ 3, 4, effective January 1, 1982; (3) amended, p. 1847, § 1, effective January 1, 1982. L. 82: (2.5) amended, p. 628, § 41, effective April 2. L. 83: (2.5) and (3) amended, p. 1496, § 3, effective April 28. L. 84: (2.5) and (3) amended, p. 989, § 2, effective February 23; (2.5) and (3) amended, p. 997, § 2, effective May 22. L. 90: (3) amended, p. 450, § 27, effective April 18. L. 2000: (3) amended, p. 1738, § 2, effective June 1. L. 2006: (3) amended and (4) added, p. 889, § 1, effective May 9. L. 2008: (4) amended, p. 1319, § 2, effective May 27. L. 2009: (3) amended and (3.5) added, (SB 09-177), ch. 186, p. 812, § 1, effective April 22. L. 2010: (3) amended and (3.3) added, (SB 10-019), ch. 382, p. 1784, § 1, effective June 8; (2.3) added and (3) amended, (SB 10-177), ch. 392, p. 1862, § 3, effective August 11; (2.4) added and (3) amended, (SB 10-174), ch. 189, p. 813, § 8, effective August 11. L. 2021: IP, (2.4), (3), (3.5), and (4) amended and (2.6) and (2.7) added, (SB 21-020), ch. 51, p. 215, § 1, effective September 7.


Cross references: For the legislative intent contained in the 2008 act amending subsection (4), see section 9 of chapter 302, Session Laws of Colorado 2008.

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