On February 21, 2024, Tsubame BHB Co., Ltd. closed the transaction. The company has amended the terms of the transaction. The company has received ¥1,300 million in its second and final tranche.

The company has received ¥5,300 million in the transaction. The transaction also included participation from new investors Heraeus Beteiligungsverwaltungsgesellschaft mbH, Yokogawa Electric Corporation and Energy & Environment Investment, Inc. The company has received ¥7,600 million in funding till date.