S2G Closes $1 Billion Fund To Scale Food, Energy And Oceans Growth Companies

S2G Investments closed a $1 billion growth-stage fund targeting companies across food and agriculture, energy, and oceans.
The fund is designed to address the “Missing Middle,” where proven companies often struggle to access capital between early venture funding and infrastructure-scale finance.
S2G has already deployed $300 million across ten investments, including companies in utility software, hybrid power systems, agricultural inputs, and maritime batteries.

Chicago-based S2G Investments has closed a $1 billion growth-stage fund aimed at scaling companies across three systems that sit at the center of the global economy: food and agriculture, energy, and oceans.

The final close of Solutions Fund I brings strategic capital from pension funds, funds of funds, family offices, and other institutional investors across North America, Europe, Asia, and Australia. The mandate is clear. S2G wants to back commercial businesses that can improve efficiency, strengthen resilience, and build long-term value in sectors facing rising cost, policy, and climate pressure.

The fund will invest mainly in North America and Europe. Its focus spans energy infrastructure, maritime transport, agricultural inputs, industrial electrification, and related operating systems. These are areas where climate goals meet hard economic realities, including supply security, industrial productivity, and infrastructure reliability.

The “Missing Middle” Becomes The Target

S2G said the fund is designed to address the “Missing Middle,” a financing gap that affects companies too mature for early-stage venture capital but not yet ready for infrastructure-scale capital.

That gap has become more important as investors look beyond pilot projects and into commercial deployment. Many companies with validated technology still need capital to expand distribution, execute acquisitions, enter new markets, or scale manufacturing.

S2G was founded in 2014 and registered as an investment adviser in 2024. The firm now has $2.8 billion in assets under management and has invested in more than 120 companies since inception.

Its platform includes more than 60 specialists across investing, policy, operations, ecosystem partnerships, and AI-driven capabilities. Managing partners Aaron Rudberg, Chuck Templeton, and Sanjeev Krishnan lead the team.

“This Fund expands our ability to provide the growth capital required to commercialize transformative technologies at a pivotal moment in the global economy,” said Rudberg. “By investing at the seams where food, energy, and ocean systems intersect, we see opportunities to accelerate solutions that are both economically superior and more resilient than legacy models. We are grateful to our investors for their support, which allows us to back operators scaling the companies that this moment demands.”

Food, Energy, And Oceans Drive The Strategy

S2G frames food and agriculture, energy, and oceans as interconnected systems with outsized economic and climate relevance. Together, the firm said they represent more than $7 trillion in annual global trade and about 90% of global emissions reduction potential.

That scale gives the fund a broad investment lens. It also reflects a shift in ESG and climate finance. Investors are increasingly looking for companies that can deliver measurable operating benefits, not just environmental narratives.

For executives, the fund points to a practical market theme. Efficiency, resilience, and decarbonization are becoming linked business cases. Lower fuel use, improved resource performance, safer field operations, and electrified transport can all support climate targets while reducing cost exposure.

Early Investments Show Commercial Pathways

S2G has already deployed $300 million across ten investments. The fund uses several financing pathways and often backs companies that fall outside traditional capital markets. In some cases, it serves as the first institutional partner.

Portfolio examples include Urbint, an AI-enabled software company that helps energy utilities manage field risk. Itron recently acquired the company, giving the fund its first exit.

Another investment is ANA, Inc., developer of the EBOSS hybrid generator system. The system integrates battery storage to optimize load delivery, extend equipment life, and cut operational expenses by 50% to 80%.

In agriculture, S2G has backed Exacto, which develops inputs that improve herbicide performance by up to 90%. The company also reduces customer water bills by 30% across 130 million U.S. acres annually.

The fund also invested in Echandia, a maritime battery supplier with more than 100 vessels delivered or on order. Echandia is supporting San Francisco Bay Ferry’s REEF program, the first high-speed zero-emission ferry network in the United States.

What Investors Should Watch

For institutional investors, Solutions Fund I reflects a larger move toward growth capital in climate-linked industrial markets. The strategy does not rely on policy alone. It targets companies with existing demand, operational use cases, and room to scale.

Governance will still matter. These companies operate in sectors shaped by public infrastructure, energy security, maritime regulation, agricultural productivity, and industrial policy. Capital providers will need to assess execution risk alongside policy direction.

The broader takeaway is that climate finance is moving deeper into the economy’s operating backbone. S2G’s fund places growth capital behind companies trying to make food, energy, and ocean systems more efficient before they reach full infrastructure scale. For global markets, that middle layer may become one of the most important tests for whether climate-aligned technologies can move from promising solutions to durable industrial assets.