We invest in early stage companies working on equity-light solutions to fight climate change.

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Our founders are enabling the rapid digitization & decarbonization of energy, mobility, agriculture, and the built environment.

OUR theory of change

Do we need more hardware? Of course—trillions of dollars more. We need to decarbonize our entire civilization. It’s an epochal challenge, and we don’t have a second to lose. That’s why we also need equity-light solutions—to accelerate the development and adoption of that hardware. Equity-light solutions make fixed assets more profitable by lowering costs, increasing revenues, speeding up deployment, increasing utilization, and optimizing performance.

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our portfolio

We invest in bold founders working on critical climate tech solutions. In addition to providing capital, we strive to have an outsized impact on their growth and development.

Founder Testimonials

“Russell has been an invaluable investor and advisor to Treehouse. His advice is thoughtful and considered. He is one of a select group of investors who really take the time to understand the finer points of what we're building. He has an incredibly diverse network and has matched us with both investors and high leverage partners and he's my go-to for advice on clean tech.”

Eric Owski
CEO & Co-Founder, Treehouse

Founder Testimonials

“Russell has been an assertive and hands-on investor since day one. Most investors ask how they can help, but Russell proactively identifies opportunities to activate him based on how his network and experience uniquely can accelerate our progress. He referred one of our top Founding Engineer candidates, provided data to help us manage our headcount model, and introduced multiple prospective channel partners.”

Jimmy Douglas
CEO & Founder, Plug

Founder Testimonials

"Russell is the investor who lives out his promise to help his companies. He will roll up his sleeves to help on a problem, leverage his network, or push you with a question you need. You won't get useless 'update’ meetings in working with Russell, but you will get help from someone who truly cares about your team, your mission, and you if he invests.”

Ben Gordon
CEO & Co-Founder, Fractal

Founder Testimonials

"Russell is the exact type of investor you want in your corner as an early-stage founder….Russell has become an invaluable sounding board and connector for Amber, helping us evaluate the pros and cons of critical decisions and brokering introductions to relevant partners, candidates, and investors."

Joe Pak
CEO & Co-Founder, Amber

Founder Testimonials

"Russell is the investor you can always count on. He approaches every challenge as a true partner and gives you the confidence to take on the toughest problems.... he’ll introduce you to your first customers and future investors, but most importantly, his belief and support in you, your team, and your mission will be unwavering."

Michael Baker
CEO & Co-Founder, TYBA


Our team has deep operating and investing experience that we leverage to offer tailored, hands-on support to our founders. Our portfolio benefits from coaching, curated introductions, and opportunities for cross portfolio collaborations.



Russell is the Founder and Managing Partner of Virta Ventures. He has over 15 years of operating and investing experience across climate tech sectors and business models. Over the past six years, he has invested in over 60 early stage companies.