Environment
Climate change is one of the defining challenges of our time. Its impacts—rising temperatures, extreme weather events, and natural disasters—are no longer distant warnings but present realities.
At Greenbridge, we believe in the power of policy, science, and innovation to drive meaningful change. Addressing this crisis requires bold ideas and coordinated global action to reduce carbon emissions while leveraging market-driven solutions to scale clean energy, reforestation, conservation, and electrification efforts.
Though our contributions are just one piece of the puzzle, we remain steadfast in supporting interventions that push the boundaries of what’s possible. By prioritizing science-backed and innovative solutions, we aim to catalyze change and contribute to a more sustainable and resilient future for our planet.
Above banner photo courtesy of the Sustainable Ocean Alliance
Grantees
Meet the incredible organizations that we are supporting. Each is creating a meaningful impact in its own way. We hope you will spend time learning more about the ones that speak to you.
-
Megafire Action is a non-profit organization urgently building policy solutions to eliminate catastrophic fires. The modern wildfire crisis is overwhelming our systems, and the time to act is now. The good news is, this is a problem of our making, and we have the power to fix it. Megafire Action supports mechanisms that facilitate a return to healthy forests and ecosystems, promoting innovation that will assess risk across landscapes and jurisdictions in the United States, and better inform our efforts to reduce risks nationwide. It also involves reforming how agencies operate so they can effectively carry out their duties. Megafire Action is mobilizing education to create the enabling conditions for success, and eliminate the age of megafire.
-
We chose to grant to MegaFire Action due to the urgent need to address the increasing frequency and intensity of megafires, which release devastating amounts of carbon into the atmosphere. We are particularly impressed with the founder, Matt, whose leadership and passion make him the ideal person to raise awareness and drive critical action at this pivotal moment.
-
Blue Forest brings people, finance, and science together to restore and protect our forests, watersheds, ecosystems, and communities.
They build partnerships with investors, land managers, non-profits, Native Nations, private companies, and the public sector. They catalyze the funds and partners needed to make restoration projects happen. They free up capital to start the work as quickly as possible. And they measure, quantify, and evaluate the results.
-
We’re proud to support Blue Forest, founded by Zach Knight, whose team is pioneering a finance-first approach to protecting America’s forests. By sitting at the intersection of people, science, and capital, they’re unlocking new ways to fund ecological restoration and reduce the devastating risk of wildfires. It’s a smart, systems-level solution that strengthens ecosystem resilience and responds to the growing impacts of climate change—right here at home.
-
Hinged on the values of community building, knowledge creation, and converting ideas into action through accessible funding, Homeworld Collective is the go-to source for talented scientists, technologists, entrepreneurs, and funders committed to maximizing the impact of climate biotechnology for planetary health.
-
We chose to grant to Homeworld Collective because we appreciate their community-first approach, which fosters collaboration across researchers, entrepreneurs, and stakeholders, enabling the rapid advancement of groundbreaking ideas. By focusing on developing the social, intellectual, and funding infrastructure necessary for climate biotech to thrive, Homeworld Collective is paving the way for transformative technologies that can significantly impact planetary health. We can't wait to see what they create!
-
Hourglass is a non-profit research organization that brings together interdisciplinary scientists to conduct targeted, integrated, and independent model, laboratory, and field research that rapidly de-risks the key uncertainties on how to safely and effectively scale mineral-based OAE techniques.
They publish all of their research, and in turn, provide the public with transparent and informed knowledge with which to make decisions about this class of climate solutions.
-
We are thrilled to support Hourglass Climate, inspired by the innovative and creative thinking that Grace and her team bring to this urgent problem. Their commitment to tackling climate change through creative, responsible, and ethical innovations, paired with a vision for scalable impact, makes them a standout leader in this critical global effort.
-
Materiom’s vision is a world where materials regenerate nature and support human health.
They are founded on a nature-inspired vision of the future — one where materials are made from abundant natural ingredients that are used, broken down, and used again. Just as nature uses a common set of building blocks to create high-performance materials — from spider silk to bone — they empower innovators worldwide to create regenerative materials using a common set of tools.
-
We’re inspired by Liz and Alysia, the visionary co-founders behind Materiom. Their work reimagines how we source and use materials, building toward a future where products are made from natural ingredients that can be reused, broken down, and remade—without harm. It’s an ambitious but grounded vision with real potential to transform our everyday lives. We’re especially excited to support a female-founded organization leading with humility, creativity, and ambition in the climate and materials space.
-
To provide real-time, reliable information during wildfires and other emergencies to keep communities safe.
-
We are proud to back John Mills and his team at a pivotal moment of expansion. John’s commitment to public safety is born from firsthand experience; the idea for WatchDuty took shape when a wildfire neared his own home deep in the forest, and he realized that critical, life-saving information simply wasn't accessible in real-time. What draws us to John’s leadership is his ability to turn that personal crisis into a scalable solution that serves the common good. While the platform began with a focus on wildfires, the team is already looking toward a future where WatchDuty provides a reliable lifeline for all types of emergencies. We believe his "boots on the ground" perspective and technical ambition are exactly what is needed to navigate the challenges of our changing climate.
-
Mati Carbon offers an innovative enhanced rock weathering technology to scale gigaton carbon removal, with work currently underway in India and parts of East and Southern Africa. The approach holds the potential to build climate resilience and economic empowerment for more than 100 million smallholder farmers in developing economies worldwide.
-
We’re energized by the bold, practical innovation behind Mati, co-founded by Shantanu Agarwal. Their approach to enhanced rock weathering offers a rare dual benefit: removing carbon from the atmosphere while boosting crop yields and improving the livelihoods of smallholder farmers. It’s a win-win that’s already showing results—and it’s deployable today. As recent winners of the XPRIZE for carbon removal, the Mati team is just getting started, and we’re proud to be part of their journey.
-
Rewiring America is the leading electrification non-profit, focused on electrifying our homes, businesses, and communities. They develop accessible, actionable data and tools, and build coalitions and partnerships to make going electric easier for households and communities. Rewiring America helps Americans save money, tackle nationwide emissions goals, improve health, and build the next generation of the clean energy workforce.
-
We like the bold ambitions of Rewiring America, and they have just skyrocketed since the passing of the Inflation Reduction Act, which included millions for electrification initiatives. The team is experienced in industry, policy, and non-profits and brings together a unique set of skills and relationships to make a significant dent in this important aspect of reducing carbon emissions in the future.
Environment
-Focused
Investments
Here are some of the exciting firms driving innovation to address critical challenges in the fight against climate change.
Aligned invests in the people, companies, and real assets that are decarbonizing the global economy and its infrastructure. Aligned acquires distributed solar projects in the United States through its Aligned Solar Partners strategy. Aligned Solar Partners is a tax-efficient strategy, which can directly monetize the solar Investment Tax Credit (ITC) and other tax benefits. The strategy has a particular focus on distributed solar projects that sell electricity to rural customers.
Breakthrough Energy’s aim is to inspire the world to develop and scale the critical solutions we need to reach net-zero emissions—so everyone can enjoy affordable, abundant clean energy.
Invest in and actively support founders creating high-impact digital solutions in our fight against climate change, while delivering exceptional outcomes for our stakeholders.
CLAI is a venture capital firm that invests in seed-stage startups building AI technologies to address climate mitigation and adaptation challenges.
Convective was founded to support entrepreneurs who are building solutions across all phases of wildfire,
from prevention and risk mitigation to suppression and recovery.
They believe in the magnitude of the threat and the opportunity. Their portfolio companies do too.
Earthshot Ventures invests in entrepreneurs making a dent in climate change. Collectively, their team has invested in 150+ climate start-ups over the last twelve years and celebrated more than 25 exits.
The Ecosystem Integrity Fund (EIF) is an early growth stage investor in companies contributing to environmental sustainability. Their mission is to use private capital to accelerate the transition to sustainability, resulting in a healthier planet, healthier communities, and strong economic growth. EIF seeks to demonstrate that there is no trade-off between having a positive impact and achieving outstanding financial returns.
Gigascale Capital invests in sectors decisive for climate impact. In these areas, deep tech meets the physical economy, solves real problems, and makes modern life better.
Lowercarbon Capital backs kickass companies that make real money slashing CO2 emissions, sucking carbon out of the sky, and buying us time to unf**k the planet.
One Acre Fund is an agricultural service provider that supports Africa's smallholder farmers to build resilient communities.
Powerhouse Ventures backs entrepreneurs building the digital infrastructure for rapid decarbonization.
Propeller invests in transformational leaders at the earliest stages of ocean-climate innovation in massive markets.
Voyager invests in technology companies creating the future of mobility, energy, materials, food, the built environment, analytics, industrial systems, and carbon removal.
WaterEquity is an asset manager with an exclusive focus on an exclusive focus on ending the most urgent issue of our time – the global water and sanitation crisis.
Zanskar uses advanced AI and predictive technologies to discover promising geothermal prospects, develop new power producing projects, and operate utility-scale geothermal power plants in the western U.S.
Explore Our Other Initiatives
Empowering Women & Children
Criminal Justice & Second Chance Employment
Education & Opportunity
Democracy
Mental Health
Additional Impact Partners
Underrepresented Emerging Managers