Finance Minister Martin Hunt and Nauru Maritime and Port Authority (NMPA) Deputy CEO Operations Wanganeen Emiu signed the grant Tuesday.
The Government of Nauru is investing $200,000 in the project.
The funding will cover key areas of climate change resilience, sustainability, and additional costs caused by the Covid-19 pandemic.
The signing was attended by an ADB team in Nauru and ADB Director General for the Pacific Leah Gutierrez via video link from ADB Headquarters in Manila.
Photo supplied GIO