The Tasmanian Greens leader has declared it is in the best interest of the state to elect another minority government at the 2014 state election.

At the Greens annual conference, Nick McKim told party faithful there has rarely been a more crucial election than the impending state poll.

"I'm here to tell you today that we will campaign hard for balance of power, because it's in Tasmania's interests," Mr McKim.

He says majority governments are lazy, unstable and divide the state.

Despite poor opinion polls and a significant drop in the Greens vote at the federal election, Nick McKim is confident the party can hold all of its five seats in State Parliament.

"There's no doubt this will be a difficult election for us," he said.

He says they will be talking up the party's achievements after signing a power-sharing deal with Labor three-and-a- half years ago.