In September 2023, the Zero Emission Maritime Buyers Alliance (ZEMBA) released its inaugural tender, seeking bids for the environmental attributes associated with zero-emission shipping services beginning in 2025. The successful conclusion of ZEMBA's first tender was announced in April 2024.

This report was developed to document the key details, reflections, and insights from ZEMBA’s inaugural tender. The report was included as an annex to an informational paper submitted to the International Maritime Organization for its consideration by the U.S. and Singapore delegations (MEPC 82/INF.13).