Connecticut General Statutes
Chapter 283 - Telephone, Gas, Power and Water Companies
Section 16-245a. - Renewable portfolio standards.

(a) Subject to any modifications required by the Public Utilities Regulatory Authority for retiring renewable energy certificates on behalf of all electric ratepayers pursuant to subsection (h) of this section and sections 16a-3f, 16a-3g, 16a-3h, 16a-3i, 16a-3j, 16a-3m and 16a-3n, an electric supplier and an electric distribution company providing standard service or supplier of last resort service, pursuant to section 16-244c, shall demonstrate:

(1) On and after January 1, 2006, that not less than two per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(2) On and after January 1, 2007, not less than three and one-half per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(3) On and after January 1, 2008, not less than five per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(4) On and after January 1, 2009, not less than six per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(5) On and after January 1, 2010, not less than seven per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(6) On and after January 1, 2011, not less than eight per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(7) On and after January 1, 2012, not less than nine per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(8) On and after January 1, 2013, not less than ten per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(9) On and after January 1, 2014, not less than eleven per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(10) On and after January 1, 2015, not less than twelve and one-half per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(11) On and after January 1, 2016, not less than fourteen per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(12) On and after January 1, 2017, not less than fifteen and one-half per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional three per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(13) On and after January 1, 2018, not less than seventeen per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(14) On and after January 1, 2019, not less than nineteen and one-half per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(15) On and after January 1, 2020, not less than twenty-one per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class I or Class II renewable energy sources, except that for any electric supplier that has entered into or renewed a retail electric supply contract on or before May 24, 2018, on and after January 1, 2020, not less than twenty per cent of the total output or services of any such electric supplier shall be generated from Class I renewable energy sources;
(16) On and after January 1, 2021, not less than twenty-two and one-half per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(17) On and after January 1, 2022, not less than twenty-four per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class I or Class II renewable energy sources;
(18) On and after January 1, 2023, not less than twenty-six per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(19) On and after January 1, 2024, not less than twenty-eight per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(20) On and after January 1, 2025, not less than thirty per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(21) On and after January 1, 2026, not less than thirty-two per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(22) On and after January 1, 2027, not less than thirty-four per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(23) On and after January 1, 2028, not less than thirty-six per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(24) On and after January 1, 2029, not less than thirty-eight per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources;
(25) On and after January 1, 2030, not less than forty per cent of the total output or services of any such supplier or distribution company shall be generated from Class I renewable energy sources and an additional four per cent of the total output or services shall be from Class II renewable energy sources.
(b) (1) An electric supplier or electric distribution company may satisfy the requirements of this section (A) by purchasing certificates issued by the New England Power Pool Generation Information System, provided the certificates are for (i) energy produced by a generating unit using Class I or Class II renewable energy sources and the generating unit is located in the jurisdiction of the regional independent system operator, or (ii) energy imported into the control area of the regional independent system operator pursuant to New England Power Pool Generation Information System Rule 2.7(c), as in effect on January 1, 2006; (B) for those renewable energy certificates under contract to serve end use customers in the state on or before October 1, 2006, by participating in a renewable energy trading program within said jurisdictions as approved by the Public Utilities Regulatory Authority; or (C) by purchasing eligible renewable electricity and associated attributes from residential customers who are net producers. (2) Not more than one per cent of the total output or services of an electric supplier or electric distribution company shall be generated from Class I renewable energy sources eligible as described in subparagraph (A)(x)(II) of subdivision (20) of subsection (a) of section 16-1.
(c) Any supplier who provides electric generation services solely from a Class II renewable energy source shall not be required to comply with the provisions of this section.
(d) An electric supplier or an electric distribution company shall base its demonstration of generation sources, as required under subsection (a) of this section on historical data, which may consist of data filed with the regional independent system operator.
(e) The authority shall adopt regulations, in accordance with the provisions of chapter 54, to implement the provisions of this section.
(f) Notwithstanding the provisions of this section and section 16-244c, for periods beginning on and after January 1, 2008, each electric distribution company may procure renewable energy certificates from Class I, Class II and Class III renewable energy sources through long-term contracting mechanisms. The electric distribution companies may enter into long-term contracts for not more than fifteen years to procure such renewable energy certificates. The electric distribution companies shall use any renewable energy certificates obtained pursuant to this section to meet their standard service and supplier of last resort renewable portfolio standard requirements.
(g) On or before January 1, 2014, the Commissioner of Energy and Environmental Protection shall, in developing or modifying an Integrated Resources Plan in accordance with sections 16a-3a and 16a-3e, establish a schedule to commence on January 1, 2015, for assigning a gradually reduced renewable energy credit value to all biomass or landfill methane gas facilities that qualify as a Class I renewable energy source pursuant to section 16-1, provided this subsection shall not apply to anaerobic digestion or other biogas facilities, and further provided any reduced renewable energy credit value established pursuant to this section shall not apply to any biomass or landfill methane gas facility that has entered into a power purchase agreement (1) with an electric supplier or electric distribution company in the state of Connecticut on or before June 5, 2013, or (2) executed in accordance with section 16a-3f or 16a-3h. The Commissioner of Energy and Environmental Protection may review the schedule established pursuant to this subsection in preparation of each subsequent Integrated Resources Plan developed pursuant to section 16a-3a and make any necessary changes thereto to ensure that the rate of reductions in renewable energy credit value for biomass or landfill methane gas facilities is appropriate given the availability of other Class I renewable energy sources.
(h) The authority shall establish procedures for the disposition of renewable energy certificates purchased pursuant to section 16-244z, which may include procedures for selling renewable energy certificates consistent with section 16-244z or, if renewable energy certificates procured pursuant to section 16-244z are retired and never used for compliance in any other jurisdiction, reductions to the percentage of the total output or services of an electric supplier or an electric distribution company generated from Class I renewable energy sources required pursuant to subsection (a) of this section. Any such reduction shall be based on the energy production that the authority forecasts will be procured pursuant to subsections (a) and (b) of section 16-244z. The authority shall determine any such reduction of an annual renewable portfolio standard not later than one year prior to the effective date of such annual renewable portfolio standard. An electric distribution company shall not be responsible for any administrative or other costs or expenses associated with any difference between the number of renewable energy certificates planned to be retired pursuant to the authority's reduction and the actual number of renewable energy certificates retired.
(P.A. 98-28, S. 25, 117; P.A. 03-135, S. 7; June Sp. Sess. P.A. 05-1, S. 34; P.A. 06-74, S. 3; P.A. 07-242, S. 40, 71; P.A. 11-80, S. 1; P.A. 13-303, S. 5; P.A. 14-134, S. 13; P.A. 17-144, S. 3; 17-186, S. 1; P.A. 18-50, S. 1, 2, 28; P.A. 19-71, S. 4; P.A. 22-118, S. 163.)
History: P.A. 98-28 effective July 1, 1998; P.A. 03-135 amended Subsec. (a) to delete provisions applicable before July 1, 2003, designate remaining provisions as Subdiv. (1), add provisions re applicability of section to electric suppliers and electric distribution companies providing transitional standard offer, standard service, and supplier of last resort service, adjust the percentage of Class I and Class II renewable energy source requirements and the dates for meeting such requirements, delete provision re participation in a renewable energy trading program approved by the state, reposition provision re generation solely from Class II renewable energy source as new Subdiv. (3) and add new Subdiv. (2) re qualifying jurisdictions, amended Subsec. (b) to add a reference to an electric supplier and an electric distribution company and to make conforming changes, added new Subsec. (c) re make up of any deficiency and credit for the current year where credit was received in a preceding year, redesignated former Subsec. (c) as Subsec. (d) and amended said Subsec. to change “may” to “shall” and to make technical changes, effective January 1, 2004; June Sp. Sess. P.A. 05-1 amended Subsec. (a)(2) to add “on and after January 1, 2010”, effective July 1, 2006; P.A. 06-74 amended Subsec. (a) to make technical changes, redesignated existing Subsec. (a)(2) as new Subsec. (b), amended Subsec. (b) to replace language re certain qualifying jurisdictions with language in Subdiv. (1) re certificates issued by the New England Power Pool Generation Information System and in Subdiv. (2) re renewable energy certificates under contract on or before October 1, 2006, and to make technical changes, redesignated existing Subsec. (a)(3) as new Subsec. (c), and redesignated existing Subsecs. (b) to (d), inclusive, as new Subsecs. (d) to (f), inclusive; P.A. 07-242 amended Subsec. (a) to add Subdiv. designators (1) to (5) for existing renewable energy portfolio standard requirements through on and after January 1, 2010, and add Subdivs. (6) to (15) re standards through on and after January 1, 2020, and added Subsec. (b)(3) re purchasing renewable energy from residential net producers, and, effective June 4, 2007, added Subsec. (g) re long-term contracts; pursuant to P.A. 11-80, “Department of Public Utility Control” and “department” were changed editorially by the Revisors to “Public Utilities Regulatory Authority” and “authority”, respectively, effective July 1, 2011; P.A. 13-303 added Subsec. (h) re schedule for assigning gradually reduced renewable energy credit value to certain biomass and landfill methane gas facilities, effective June 5, 2013; P.A. 14-134 amended Subsec. (g) by deleting Subdiv. (1) designator and deleting former Subdiv. (2) re initiation of contested case proceeding to examine use of long-term contracts to procure certificates, effective June 6, 2014; P.A. 17-144 amended Subsec. (a) by replacing “four” with “three” re per cent of total output or services in Subdivs. (13), (14) and (15), effective June 27, 2017; P.A. 17-186 deleted former Subsec. (e) re supplier or electric distribution company making up deficiency within renewable energy portfolio, and redesignating existing Subsecs. (f) to (h) as Subsecs. (e) to (g), effective July 1, 2017; P.A. 18-50 amended Subsec. (a) by adding provision re demonstration subject to modifications required by authority for retiring renewable energy certificates, replacing “twenty per cent” with “twenty-one per cent” and adding exception in Subdiv. (15) re electric suppliers that entered into or renewed retail electric supply contracts on or before May 24, 2018, and adding Subdivs. (16) to (25) re standards each year on and after January 1, 2021 to on and after January 1, 2030, respectively, effective May 24, 2018, amended Subsec. (b) by designating existing provision re electric supplier or electric distribution company satisfying requirements of section as new Subdiv. (1), and amending same by redesignating existing Subdivs. (1) and (2) as new Subparas. (A) and (B), redesignating existing Subparas. (A) and (B) as clauses (i) and (ii), redesignating existing Subdiv. (3) as Subpara. (C), and adding new Subdiv. (2) re not more than 1 per cent of total output or services to be generated from Class I renewable energy sources, effective October 1, 2018, and added Subsec. (h) re establishment of procedures for disposition of renewable energy certificates, effective May 24, 2018; P.A. 19-71 amended Subsec. (a) by adding reference to Sec. 16a-3n and making conforming changes, effective June 7, 2019; P.A. 22-118 amended Subsec. (a) by deleting “Class I or” in provisions re additional 4 per cent output or services from renewable energy sources in Subdivs. (18) to (25).

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