The first Green Bank in the U.S., the Connecticut Green Bank (CGB) is a quasi-public corporation established in 2011 as part of the Connecticut Legislature’s Public Act 11-80, an act concerning the establishment of the Department of Energy and Environmental Protection and Planning for Connecticut’s clean energy future. The CGB was established to develop and implement strategies that bring down the cost of clean energy in order to make it more accessible and affordable to consumers in the residential, commercial, and industrial sectors. Its mission is to support the Connecticut Governor’s and Legislature’s energy strategy to achieve cleaner, cheaper and more reliable sources of energy while creating jobs and supporting local economic development. The state’s strategy includes an ambitious goal of achieving 20% electricity production from renewable sources by 2020. CGB is capitalized by a surcharge on electric bills, proceeds from sales of emissions allowances through the Regional Greenhouse Gas Initiative, federal competitive and non-competitive grants, and private sources. A Board of Directors, supported by administrative and professional staff, governs the CGB in conjunction with several specialized Committees.


CGB is leading the transition of low carbon, climate-resilient infrastructure finance away from only government-funded grants, rebates, and other subsidies and towards deploying increasing levels of private capital. It participates in the market by offering incentives, co-investment, credit support, warehousing, marketing and other market-based tools. Additionally, it participates in building awareness of Green Banks globally by being a leader in transparency with the public and sharing its lessons learned with other existing or potential Green Banks.

CGB offers green energy solutions to home, building and multifamily property owners, residential and commercial contractors, and even whole towns and cities. Contractors can increase their reach and value offerings by becoming a CGB-certified contractor, thus gaining access to customer financing programs and the ability to borrow working capital up to 50% of project costs for CGB program projects. CGB works with a variety of local lenders and capital providers to both spark and sustain the green energy movement across the state.

Building owners can take advantage of CGB’s Commercial Property Assessed Clean Energy (C-PACE) program, which offers low-cost capital to fund energy efficiency and renewable energy projects that lower building operating costs. C-PACE allows building managers to pay for green energy improvements over time through a voluntary benefit assessment on their property tax bill and programs are structured so that monthly energy savings more than offset the monthly loan repayment. As of July 2016, CGB has facilitated over USD 73.6 million in closed C-PACE projects ranging from small (USD 30K) to large (over USD 8 million). As the financing model continues to demonstrate its effectiveness, CGB has reduced its own capital contribution to the program from 100% in 2013 to 44% in 2016 as private capital providers have stepped in to use the program.

In additional to C-PACE, CGB offers homeowners low-interest loans with flexible terms for energy efficiency improvements as well as a solar rebate program to lower the cost of installing a system. A new program specially designed to meet the needs of low and moderate income homeowners ensures that clean energy solutions are affordable for all.


Through comprehensive annual financial reports and public meetings, including its Comprehensive Annual Financial Reports (CAFR), CGB is a leader in tracking its progress against performance metrics and reporting them to the public. Through May 2020, the bank had invested a total of USD 282 million into projects with a total value of over USD 2 billion, achieving an overall leverage ratio of 6:1. The amount of private capital CGB raises with each public dollar of investment is growing every year. CGB estimates these investments have led to the creation of over 22,500 direct, indirect, and induced job-years and have generated an estimated $93.4 million in state tax revenues. CGB has supported deployment of 416 MW of installed clean energy capacity. Investments are expected to avoid over 8.7 million tonnes of CO2 emissions. This helps families avoid sick days and hospitals visits, creating an estimated $228 – $516 million in public health value.

Last updated June 15, 2020

CT Green Bank

Additional Reference

CT Green Bank News and Events

The CGB’s website, http://www.ctgreenbank.com/, provides a great deal of information on specific programs as well as stories from citizens of Connecticut that have benefitted from them.

Studies and reports on the CGB: http://www.ctgreenbank.com/about-us/studies-and-reports/