Alternative asset and private equity investor KKR and climate solutions and sustainable infrastructure investment firm HA Sustainable Infrastructure Capital (HASI) announced an agreement by their clean energy-focused co-investment vehicle CarbonCount Holdings 1 LLC (CCH1) to issue $592 million in a private offering of senior unsecured notes.

Launched in 2024 as a strategic partnership by KKR and HASI with $1 billion commitments from each investor, CarbonCount invests in clean energy projects in the U.S., with investments consistent with HASI’s existing investment strategy, which includes a focus on behind-the-meter, grid-connected, renewable natural gas and transport projects.

KKR Managing Director Cecilio Velasco said:

“We created CCH1 to accelerate the build-out of sustainable infrastructure that is necessary to support energy availability, affordability and reliability in the U.S. By expanding CCH1’s investment capacity, we are taking a meaningful step forward in meeting this objective and look forward to further strengthening our strategic partnership with HASI.”

Following the new transaction, CarbonCount’s investment capacity has been increased to $2.6 billion. The firm’s also said that the platform’s investment period will be extended from an initial 18 months to continue through November 2026.

HASI Chief Revenue and Strategy Officer Marc Pangburn said:

“We are excited to expand the investment capacity of CCH1, enabling both increased investment activity and capital efficiency. This transaction further demonstrates our ability to access low-cost capital driven by the low-risk nature of our underlying assets.”