Jeffrey Williams

About

As an investment firm+, CGC collaborates across the public and private sector to transform markets, mobilize capital, and build an economy that benefits all Americans.

Our Team

We’re a mission-driven team of financial and technical experts

Board of Directors

Our board provides the strategic guidance and expertise needed to advance CGC’s mission

Advisory Boards

Our advisory boards ensure transparent, community-centered guidance shapes CGC’s strategy

Our History

A proven model for bringing economic and environmental impact to scale

Recent Highlights

CGC Asks U.S. Cabinet Officials To ‘Work Together to Solve the Energy Crisis in Alaska and Beyond

In a full-page ad in the Anchorage Daily News today, CGC, a national green bank that received $5 billion in funding from the federal government last year, warned that “the nation needs more energy” and asked three Cabinet members visiting Alaska to “work together to solve the energy crisis in Alaska and beyond.”

Banyan Infrastructure and CGC Announce Partnership at Alaska Energy Conference

Banyan Infrastructure (Banyan), a leading project finance software provider, is excited to announce a partnership with CGC.

InvestmentS

Transformative Investments

CGC invests where opportunity and impact intersect, accelerating the deployment of American-made clean energy and resilient infrastructure.

Our Approach

Delivering lasting returns for people, markets, and the environment

Our Investments

Investing where opportunity and impact intersect

Market Development

Building markets that make life more affordable and the environment more clean

Submit a Proposal

Apply for financing for qualifying projects or portfolios

Recent Highlights

CGC Invests $200 Million in GreenieRE to Remove Financing Obstacles and Accelerate Access to Cheaper Power

Today, the CGC, announced an investment of $200 million in GreenieRE, an impact-focused reinsurance company designed to remove financing obstacles in the insurance market to reduce costs and accelerate the deployment of clean energy technologies at-scale.

RFP 1 Overview: CGC Seeking Proposals for Investments in Qualified Projects

Impact

Our Impact

For over a decade, we’ve shown what works—and made it work for everyone, everywhere.

Impact

Delivering impact, so everyone can breathe clean air, drink safe water, and thrive today and tomorrow

Understanding the Model

Mission-driven financing institutions for a strong economy and clean environment

Resources

Explore tools, guides and insights

Recent Highlights

Six Green Banks Receive $1.3 Million in Awards and Technical Assistance to Finance Equitable Clean Water Infrastructure

Today, CGC, PRE Collective, and Quantified Ventures (QV) jointly announce their selection of six green banks from across the United States to receive $1.3 million in grants plus technical assistance to build a pipeline of equitable clean water infrastructure projects that directly benefit disadvantaged communities.

Green Bank network’s total investment could reach $10B for 2023

Preliminary reports from the CGC say investment in clean energy projects and technologies increased 52% over 2022.

News & Insights

Latest news and updates on how we’re working to ensure clean air, safe water, and a thriving future for all.

FAQs

Check out our FAQ page for quick answers and helpful resources.

News

CGC Submitted Second Semi-Annual Report to the EPA

CGC submitted its second semi-annual report to the EPA on Friday, August 29 2025, detailing its activities through January 1, 2025. The report demonstrated that CGC has made substantial progress in building the infrastructure needed to attract private capital at the scale required to meet America’s urgent energy needs and advance clean air, clean water, and affordable energy for all Americans.

CGC and ICLEI USA Announce 12.5 Million in Municipal Investment Fund Awards to 50 U.S. Communities

Today, CGC and ICLEI USA are announcing $12.5 million in awards to 50 selected U.S. communities to develop community-based plans that will ensure the US can keep up with the rising demand for electricity while keeping costs down.

Recent Highlights

2025 CGC Semi-Annual Report

The report demonstrated that CGC has made substantial progress in building the infrastructure needed to attract private capital at the scale required to meet America’s urgent energy needs and advance clean air, clean water, and affordable energy for all Americans. Learn more here.

The Evolving Landscape of US Green Banks

Green banks are an essential tool for the green energy transition. Though well-established in countries such as Germany, India, Australia, and the UK, green banks have gone mostly missing in action in the United States until recently.

Contact Us

Whether you’re looking to invest, partner, or support our work, we’re always looking for opportunities to connect and collaborate.

Submit a proposal

Accepting applications for financing of qualifying projects or portfolios

Get in touch

Join CGC’s newsletter to stay up to date on our work.

By subscribing you agree to our Privacy Policy and provide consent to receive updates from our company.

Back

Jeffrey Williams

Chairman, Alliance for Market Solutions and Senior Advisor, Linden Trust for Conservation

Mr. Williams devoted 34 years to his career as an investment banker, first withMorgan Stanley & Co., then as a Partner at Greenhill & Co. and, finally as the founder and Chairman of Jeffrey Williams & Co LLC. The better part of his professional career was spent in providing strategic financial advice to the telecommunications, media and technology industries.