The Irish business has secured the investment for its Renewable Energy Income Fund II.
The finance round follows the business’s aborted initial public offering earlier this year.
The agency has reportedly achieved more than four times its original investment following the exit.
The investment is the second tranche of funding for the South Carolina-based businesses.
Pindrop has raised $90m in series D funding from a consortium that included Allegion, Dimension Data, Singapore’s EDBI and Alphabet, the latter investing through both GV and CapitalG.
The state-backed agency has participated in a $28.5m round for Agricool, which grows strawberries in containers, and which plans to now hire 200 more staff members.