Australia touted a world-first project that could help make the country a "renewable energy superpower" by shifting huge volumes of solar electricity under the sea to Singapore.

On Tuesday, Singapore Prime Minister Lee Hsien Loong and Australian counterpart Anthony Albanese met in Canberra to sign a sustainable commerce agreement to support trade, investment and climate change objectives. 

The green trade deal will see the two countries jointly implementing 17 initiatives to promote green shipping, sustainable aviation, government purchases of goods and services from low-emissions sources, sustainable food systems and eco labelling and sustainable schemes, the Australian government said.

Albanese said the pact showed a "collective resolve" to slash greenhouse gas emissions through an ambitious energy project and added the pact would "support clean energy innovation, unlock business opportunities and create jobs, and help deliver our...