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Connecticut

Connecticut

Incentives/Policies for Renewables & Efficiency

Printable Version
Interconnection Standards   

Last DSIRE Review: 02/21/2013
Program Overview:
State: Connecticut
Incentive Type: Interconnection
Eligible Renewable/Other Technologies: Photovoltaics, Landfill Gas, Wind, Biomass, Hydroelectric, Fuel Cells, Municipal Solid Waste, CHP/Cogeneration, Fuel Cells using Renewable Fuels, Microturbines, Other Distributed Generation Technologies
Applicable Sectors: Commercial, Industrial, Residential, Nonprofit, Schools, Local Government, State Government, Fed. Government, (All Electric Customers)
Applicable Utilities:Investor-owned utilities
System Capacity Limit:20 MW
Standard Agreement:Yes
Insurance Requirements:Vary by system size and/or type; levels established by PURA
External Disconnect Switch:Required
Net Metering Required:No
Authority 1:
Conn. Gen. Stat. ยง 16-243a
Authority 2:
Date Enacted:
Date Effective:
CT DPUC Decision, Docket No. 03-01-15RE01
12/5/2007
12/5/2007
Summary:

In December 2007, the Connecticut Department of Public Utility Control (DPUC) now called the Public Utilities Regulatory Authority (PURA) approved new interconnection guidelines for distributed energy systems up to 20 megawatts (MW) in capacity. Connecticut's interconnection guidelines apply to the state's two investor-owned utilities -- Connecticut Light and Power Company (CL&P) and United Illuminating Company (UI) -- and are modeled on the Federal Energy Regulatory Commission's (FERC) interconnection standards for small generators.*

Connecticut's interconnection guidelines, like FERC's standards, include provisions for three levels of systems:

  • Certified, inverter-based systems no larger than 10 kilowatts (kW) in capacity (application fees: $100);
  • Certified systems no larger than 2 megawatts (MW) in capacity (application fees: $500); and
  • All other systems no larger than 20 MW in capacity. Note that the guidelines include "additional process steps" for generators greater than 5 MW (application fees: $1000, study fees will also apply).

Connecticut's guidelines include a standard interconnection agreement and application fees that vary by system type. However, Connecticut's guidelines are stricter than FERC's standards, differing from the federal standards in several significant ways:

  • Customers are required to install an external disconnect switch and an interconnection transformer.
  • Customers must indemnify their utility against "all causes of action," including personal injury or property damage to third parties.
  • Customers are required to maintain liability insurance in specified amounts based on the system's capacity.
  • In addition, the utilities were required to collaboratively submit to the PURA a status report on the research and development of area network interconnection standards. This report was completed in December 2009, and the PURA has reached a final decision (03-01-15RE02) on the docket. The PURA has determined that the utilities can interconnect inverter-based generators (up to 50 kW) on area networks.

The guidelines address requirements for study fees and include technical screens for each level of interconnection. Utilities and customers must follow general procedural timelines.

* FERC's interconnection standards are applicable to generator interconnections subject to FERC jurisdiction, whereas Connecticut's interconnection guidelines apply to state-jurisdiction interconnections, which typically occur at the distribution level. FERC standards were implemented by ISO-New England (ISO) in ISO Schedule 23, which is applicable to FERC-jurisdictional interconnections.


 
Contact:
  John Buckingham
Public Utilities Regulatory Authority
Department of Energy and Environmental Protection
10 Franklin Square
New Britain, CT 06051
Phone: (860) 827-2891
E-Mail: john.buckingham@po.state.ct.us
Web Site: http://www.ct.gov/dpuc/site/default.asp
 
  General Information
Public Utilities Regulatory Authority
10 Franklin Square
New Britain, CT 06051
Phone: (860) 827-1553
E-Mail: dpuc.information@po.state.ct.us
Web Site: http://www.ct.gov/dpuc/site/default.asp
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Disclaimer: The information presented on the DSIRE web site provides an unofficial overview of financial incentives and other policies. It does not constitute professional tax advice or other professional financial guidance, and it should not be used as the only source of information when making purchasing decisions, investment decisions or tax decisions, or when executing other binding agreements. Please refer to the individual contact provided below each summary to verify that a specific financial incentive or other policy applies to your project.

While the DSIRE staff strives to provide the best information possible, the DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. make no representations or warranties, either express or implied, concerning the accuracy, completeness, reliability or suitability of the information. The DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. disclaim all liability of any kind arising out of your use or misuse of the information contained or referenced on DSIRE Web pages.

Copyright 2013 - 2014 North Carolina State University, under NREL Subcontract No. XEU-0-99515-01. Permission granted only for personal or educational use, or for use by or on behalf of the U.S. government. North Carolina State University prohibits the unauthorized display, reproduction, sale, and/or distribution of all or portions of the content of the Database of State Incentives for Renewables and Efficiency (DSIRE) without prior, written consent.