NT Solar is thrilled to announce the addition of Mortaza Afghan to the team as Transaction Manager. In this role, Mortaza will be supporting the due diligence, structuring, and execution of renewable energy tax credit investments, working closely with investors, developers, and internal stakeholders.
Our marketing team recently sat down with Mortaza for a short interview to learn more about his background and interests.

Q: Can you talk a little bit about your educational and professional background?

A: I got my bachelor’s degree from Middlebury College in Vermont where I did a joint major in International Politics and Economics. After college, I went directly to grad school to do my master’s at The Fletcher School at Tufts University, focusing on Business for Social Impact & Political Economy, and that’s where I became interested in impact investing.  

After I graduated, I worked in renewable energy finance as a tax equity investment professional. Most recently, I was a Senior Associate at a clean energy investment firm, working on a team that managed community-based solar transactions from underwriting through closing. My role included investor sourcing, coordinating due diligence, and supporting transaction execution across partnerships with high-net-worth individuals, banks, and institutional investors.

Q: What made you interested in the world of renewable energy?

A: When I was interviewing for roles after graduate school, I was looking at both impact investing firms that provide consulting services, and firms that focus more on the research side. Part of the reason I ended up going with my previous employer was the focus of the firm. They were focused on democratizing the benefits of solar and bringing solar to LMI communities. That was a direct connection between what I was looking for; a role where I could have an impact, but also be able to utilize my background in finance where I could learn more about how to structure investments that have both financial returns and also community benefit.  

I think specifically with the renewable energy and solar projects that I have been a part of, I appreciate that you have a role in directing capital towards projects that help communities create green jobs, help with climate change and reducing carbon emissions, and ultimately, provide renewable energy access to communities that are usually left behind. 

Q: What are some of your professional strengths and interests? 

A: I would say some of my greatest strengths include transaction management, attention to detail, and the ability to coordinate across multiple stakeholders. I have helped manage transactions from early-stage diligence through closing, balancing financial analysis, third party diligence, legal coordination, and investor communication, often all at once. I’m also really comfortable working in fast-paced environments where ownership and execution are critical. I’m particularly interested in improving transaction efficiency and standardization in the tax equity and transferability markets, helping make the process more streamlined and scalable for all parties involved.

Q: Who or what inspires you the most? 

A: I’m definitely motivated and inspired by organizations that are able to blend impact with financial returns, especially in the renewable energy space. When you think about impact, you may potentially see it as a competing with financial return, but in reality, they can reinforce each other. The tax equity space is a good example of how the two can work together. You can have impactful projects that help communities and also have strong financial returns that help investors. You don’t have to sacrifice returns for impact. I think that NT Solar and NTCIC both prove that model works.

Q: What are you most excited about as you step into this role? 

A: My focus in my previous role was mainly on smaller scale solar projects, so I’m excited to work on and learn more about how larger scale projects work. I’m excited to work with different developers and investors as well.

I’m also looking forward to learning more about historic tax credits from my NTCIC colleagues in hopes that we’ll have opportunities to work on projects where you blend different types of tax credits. Overall, I’m thrilled to be in a role where we’re able to work on impactful projects and help our investors achieve their goals.

We’re thrilled to have Mortaza as part of the NT Solar team!

Learn more and connect with him here.

NT Solar, an affiliate and wholly owned subsidiary of NTCIC, is a leading national investment service provider, directing capital to solar and storage projects that power local communities. The team provides end-to-end support, from sourcing and diligence through closing and ongoing reporting, leveraging Renewable Energy credits to advance environmental progress and economic opportunity. More about NT Solar →

Invest With Us

Since our inception in 2012, NT Solar has helped investors navigate Solar Investment Tax Credits and reach their Environmental Social and Governance (ESG) goals. We work to pair investors with the right solar project that will bring cost-effective energy options and growth to low-income communities, improve tax efficiency, and drive ESG initiatives. 

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Washington, D.C. – December 22,2025 – NT Solar, a subsidiary of the National Trust Community Investment Corporation (NTCIC), announces that Karin Berry, Managing Director, will retire at the end of the year. Paul Holshouser, currently Director of Solar Transactions, will step into the leadership role starting on January 1st, continuing NT Solar’s mission to deliver impactful renewable energy investments.

In 2024 alone, the U.S. added more than 30 gigawatts of solar capacity, according to the Solar Energy Industries Association (SEIA). That’s enough to power over 5 million homes—and the momentum isn’t slowing down

Celebrating Karin Berry’s Legacy

Karin Berry has been a major player in the renewable energy space for over 30 years, with experience spanning international energy policy, government service, and private sector investment. Before joining NT Solar, Karin advanced clean energy initiatives in the public sector, including her work at the U.S. Trade Representative’s office, where she focused on international energy policy and government service. She later held leadership roles at PNC Energy Capital and Guggenheim Capital Markets, helping drive the adoption of renewable technologies and innovative investment strategies across diverse markets.

During her tenure as the inaugural Managing Director of NT Solar, Karin Berry led origination, structuring, and closing of renewable energy tax credit investments, building deep relationships with investors and developers nationwide. Her leadership helped expand NT Solar’s reach and reputation, and she leaves a legacy of integrity, innovation, and community impact. Since joining NT Solar in 2015, she has overseen solar tax credit investments and managed a rapidly growing portfolio of renewable projects, responsible for over $1 billion in tax credit investments.

I will miss the NTCIC team and our all-in commitment to delivering community benefit.  Of course, I’ll still be doing what I can to support this community in my retired life!

Karin Berry Reflecting on her transition
Paul Holshouser Named Director of NT Solar

Paul Holshouser brings more than 15 years of experience in wind and solar energy, with a background in project finance, business development, and energy policy. Since joining NT Solar in 2024 as Director of Solar Transactions, he has managed closings and fundings for renewable energy tax credit investments, working closely with investor and developer partners. Prior to joining NT Solar, Paul led finance at Distributed Sun and served as a tax policy specialist at the American Wind Energy Association.

“I am honored and excited to carry forward NT Solar’s legacy—serving investors by delivering strong returns and lasting community benefits,” said Paul. “Karin built a platform at NT Solar that is poised for continued success and industry leadership.  It is our dedication to superior customer service that will continue to satisfy investors and developers alike.

“Karin’s vision and dedication have shaped NT Solar into a trusted partner for investors and developers. We are grateful for her leadership and excited to welcome Paul as NT Solar’s new Director. His expertise and energy will guide NT Solar into its next chapter.”

David Clower President & CEO of NTCIC.

NT Solar, an affiliate and wholly owned subsidiary of NTCIC, is a leading national investment service provider, directing capital to solar and storage projects that power local communities. The team provides end-to-end support, from sourcing and diligence through closing and ongoing reporting, leveraging Renewable Energy credits to advance environmental progress and economic opportunity. More about NT Solar →

Invest With Us

Since our inception in 2012, NT Solar has helped investors navigate Solar Investment Tax Credits and reach their Environmental Social and Governance (ESG) goals. We work to pair investors with the right solar project that will bring cost-effective energy options and growth to low-income communities, improve tax efficiency, and drive ESG initiatives. 

Ready to Inspire a Sustainable Future?


By submitting this form, you are consenting to receive marketing emails from: . You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact