HA Sustainable Infrastructure Capital and KKR have agreed to commit an additional $1 billion in capital to their joint investment vehicle, CarbonCount Holdings 1, expanding its capacity to finance sustainable infrastructure projects across the United States.
Under the agreement, each firm will invest a further $500 million into CarbonCount Holdings 1 (CCH1), a co-investment platform established by HASI and KKR to provide long-term capital for clean energy and other sustainable infrastructure assets. The expanded commitments, together with existing leverage targets, are expected to increase the vehicle’s total investment capacity to nearly $5 billion.
The investment period for CCH1 has also been extended to the earlier of the end of 2027 or the point at which all capital commitments are deployed.
“CCH1 enables us to efficiently deploy capital into sustainable infrastructure projects that support the energy transition and address the country’s rising power demand,” said Marc Pangburn, chief revenue and strategy officer at HASI. “Alongside KKR, we are pleased to further scale CCH1 to deliver long-term value for our clients and stakeholders.”
Cecilio Velasco, managing director at KKR, said the increased commitment reflected strong momentum in the partnership. “Together with HASI, we look forward to delivering long-term, flexible capital to high-quality sustainable infrastructure projects across the U.S.,” he said.
CCH1 was established in May 2024, with HASI and KKR each initially committing $1 billion to co-invest in clean energy assets over an 18-month period. In June 2025, the vehicle expanded its capacity through the issuance of $592 million in 20-year fixed-rate senior unsecured notes and extended its initial investment period to November 2026.
As of November 2025, and including the reinvestment of returned capital, the HASI-KKR partnership had closed nearly $3 billion in investment commitments across six asset classes.
