The U.S. may accept Australia's offer to supply biofuel for its Asia-Pacific fleet, advancing the U.S. Navy's goal of getting half its power from renewables by 2020.

The premier of Australia's northeastern state of Queensland, Annastacia Palaszczuk, signed a cooperation agreement to explore the research, development, supply and sale of advanced drop-in alternative fuels for the navy's "Great Green Fleet" this week, according to a statement Wednesday. The initiative is part of a yearlong exercise supplying warships with alternative fuels, according to the navy's website.

The accord "puts Queensland in the box seat to supply the Pacific fleet," Palaszczuk said.