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Dan Rosen

Dan Rosen

Climate tech entrepreneur, investor, and activist driving clean energy innovation

San Francisco, California, United States
Joined August 2025
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Summary

Dan Rosen is a serial entrepreneur deeply committed to climate change action, founding and leading multiple ventures in clean energy and climate finance. His career spans over 15 years, during which he has focused on creating innovative financial solutions to accelerate the adoption of renewable energy and address energy justice issues. unreasonablegroup+2
Rosen played a pivotal role in democratizing residential solar financing as a co-founder of Mosaic. Under his leadership as CEO, President, and Chairman, Mosaic became a leading provider in the US, facilitating billions in solar loans and enabling widespread access to clean energy. unreasonablegroup+4
His work extends to addressing energy poverty and promoting economic development in underserved communities, particularly through his co-founding of Navajo Power. This initiative focuses on developing utility-scale solar projects on tribal lands, aiming to maximize economic benefits for indigenous communities and transition away from fossil fuel dependence. theorg+4
Rosen is actively engaged in climate fintech innovation through Ezra, where he serves as CEO and Founder. Ezra utilizes AI tools to drive financing in private markets for climate solutions. He also co-founded Solara, a fintech company focused on bringing climate solutions to emerging markets, starting in Mexico. unreasonablegroup+4
A lifelong climate activist, Rosen's commitment to environmental causes began in his youth, including successfully advocating for solar installation at his high school. He is a Brower Youth Award winner and has been recognized twice by Forbes as "30 Under 30" in Energy, highlighting his significant early impact in the sector. climateone+2

Work