The United Illuminating Company - Small ZREC Tariff

March 04, 2023


Note: The United Illuminating Company will open the Year 7 Small ZREC Tariff Program on Monday, April 1, 2019 at 1 p.m. Eastern. Therefore, the two-week window (as described in the posted Rules & Process for Submitting Applications for the Small ZREC Tariff below) will close at 1 p.m. Eastern on Monday, April 15, 2019.

In July 2011, Connecticut enacted legislation amending the state's Renewables Portfolio Standard and creating two new classes of renewable energy credits (RECs): Zero Emission Renewable Energy Credits (ZRECs) and Low Emission Renewable Energy Credits (LRECs). A Zero Emission Renewable Energy Facility is one that produces no emissions, such as solar, wind, or hydro. Owners of these facilities have an opportunity to sell their ZRECs to the utility at a fixed price for a period of 15 years. 

In coordination with the state's other investor-owned utility, the United Illuminating (UI) Company offers owners of small ZREC projects (less than or equal to 100 kW) the opportunity to enroll in the Small ZREC Tariff Program. The Small ZREC price is set at additional 10% of the Medium ZREC Weighted Average Bid Price. For 2019 (Year 7) of procurement, Small ZREC Tariff rate was set at $98.18. 

The program is available on a first-come, first-served basis. The utilities are required to conduct solicitations up to 6 years. Sellers must register with NEPOOL Generation Information System and must apply to the Public Utilities Regulatory Authority (PURA) and be qualified as an RPS Class 1 generator. Equipment must be located behind the meter and have a dedicated ZREC meter. Customers may not have received funding or grants for the system from the state's Clean Energy Finance and Investment Authority (although customers that have received low cost financing are eligible).

Program Overview

Implementing Sector: Utility
Category: Financial Incentive
State: Connecticut
Incentive Type: Solar Renewable Energy Credit Program
Web Site:!ut/p/z1/?1dmy&mapping=%2Fuinet%2Fhome%2Fsearch&urile=wcm%3apath%3a%2FUINETAGR_SuppliersPartners%2FSuppliers_and_Partners%2FPower_Procurement%2FSmall_ZREC_Program%2FSmall_ZREC_Program
Start Date:
Eligible Renewable/Other Technologies:
  • Solar Photovoltaics
  • Wind (Small)
  • Hydroelectric (Small)
Incentive Amount: $98.18 per ZREC (for Year 6 round of solicitation)
Maximum Incentive: Standard offer for Small ZRECs
Eligible System Size: 100 kW (AC) or smaller
Duration: 15-year standard contract
Equipment Requirements: Must be located behind the meter and have a dedicated ZREC meter
Installation Requirements: Project must be connected to the distribution system of UI,


This program has 1 incentives
Technologies: Solar Photovoltaics, Wind (Small), Hydroelectric (Small)
Sectors: Commercial, Industrial, Investor-Owned Utility, Nonprofit, Residential, Federal Government, Agricultural, Multifamily Residential, Low Income Residential, Integrators
Parameters: The incentive is 98.18 $/Unit


Name: CT Gen Stat § 16-244s (2012)
Effective Date: 07/01/2011
Name: PURA Decision DOCKET NO. 11-12-06
Effective Date: 04/04/2012


Name: LREC/ZREC Solicitation Information
Organization: Connecticut Light & Power
Address: 66 Curtis Street
New Britain CT 06052
Phone: (877) 947-3873

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.