Key Takeaways
- • KKR and HA Sustainable Infrastructure Capital (HASI) committed an additional $1 billion ($500 million each) to CarbonCount Holdings 1 (CCH1), their joint sustainable infrastructure co-investment platform, effective December 16, 2025.
- • Combined with existing leverage targets, the new capital injection increases CCH1's total investment capacity to approximately $5 billion, with the investment period extended to the earlier of end of 2027 or full capital deployment.
- • CCH1, launched in May 2024 with initial $1 billion commitments from each partner, has already closed nearly $3 billion in investment commitments across six asset classes focused on behind-the-meter renewable, grid-connected, renewable natural gas, and transport infrastructure projects.
- • The platform previously expanded its capacity in 2025 through a $592 million private offering of senior unsecured notes and extended its initial 18-month investment timeline through November 2026.
- • The escalated commitment reflects sustained institutional appetite for long-term capital deployment into U.S. sustainable infrastructure amid rising power demand and the ongoing energy transition.
Summary
KKR and HA Sustainable Infrastructure Capital announced a significant capital deepening of their strategic partnership on December 16, 2025, committing an additional $1 billion to CarbonCount Holdings 1, their co-investment platform focused on U.S. sustainable infrastructure. Each firm will contribute $500 million to the platform, building on the original $1 billion commitments from each party when CCH1 was established in May 2024.
The expanded capitalization reflects accelerating deployment demand across renewable energy, storage, and efficiency assets. According to Marc Pangburn, HASI's Chief Revenue and Strategy Officer, "CCH1 enables us to efficiently deploy capital into sustainable infrastructure projects that support the energy transition and address the country's rising power demand." The platform targets behind-the-meter systems, grid-connected renewables, renewable natural gas infrastructure, and transportation solutions—areas aligned with the broader energy transition thesis favored by institutional investors.
CCH1's investment trajectory demonstrates rapid market traction. Since inception, the platform has closed approximately $3 billion in investment commitments spanning six asset classes. The new $1 billion commitment, combined with existing leverage targets, is projected to increase total platform investment capacity to nearly $5 billion. Earlier in 2025, KKR and HASI had already expanded CCH1's financing capacity through a $592 million private offering of senior unsecured notes and extended the initial 18-month investment window through November 2026. The latest commitment extends the investment period further to the earlier of end of 2027 or full capital utilization.
The escalation signals confidence from two major alternative asset managers in the durability of sustainable infrastructure returns and the structural tailwinds supporting the sector, including grid modernization requirements and accelerating corporate renewable energy procurement. The platform's ability to deploy capital at scale while maintaining long-duration investment horizons addresses a critical gap in the market for institutional-grade sustainable infrastructure financing.
The expanded capitalization reflects accelerating deployment demand across renewable energy, storage, and efficiency assets. According to Marc Pangburn, HASI's Chief Revenue and Strategy Officer, "CCH1 enables us to efficiently deploy capital into sustainable infrastructure projects that support the energy transition and address the country's rising power demand." The platform targets behind-the-meter systems, grid-connected renewables, renewable natural gas infrastructure, and transportation solutions—areas aligned with the broader energy transition thesis favored by institutional investors.
CCH1's investment trajectory demonstrates rapid market traction. Since inception, the platform has closed approximately $3 billion in investment commitments spanning six asset classes. The new $1 billion commitment, combined with existing leverage targets, is projected to increase total platform investment capacity to nearly $5 billion. Earlier in 2025, KKR and HASI had already expanded CCH1's financing capacity through a $592 million private offering of senior unsecured notes and extended the initial 18-month investment window through November 2026. The latest commitment extends the investment period further to the earlier of end of 2027 or full capital utilization.
The escalation signals confidence from two major alternative asset managers in the durability of sustainable infrastructure returns and the structural tailwinds supporting the sector, including grid modernization requirements and accelerating corporate renewable energy procurement. The platform's ability to deploy capital at scale while maintaining long-duration investment horizons addresses a critical gap in the market for institutional-grade sustainable infrastructure financing.
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