Greens leader Richard Di Natale says there is a "real possibility" his party could see a big increase in votes, like Germany's Greens party which recently saw its vote double in just two years.

Senator Di Natale told The Sydney Morning Herald and The Age he thinks there are "a lot of parallels" between the Australian and German situations. The Greens leader said both countries have witnessed a convergence between their two major parties alongside concern about climate change.

Greens leader Richard Di Natale says the election result was a "complete shock" to him. Credit:Alex Ellinghausen

"I can see that there's real possibility of the Greens seeing that big increase - a similar increase to the increase we saw in Germany," Senator Di Natale said.

The German Greens polled 9 per cent in the country's 2017 general election. In the recent European elections, they received a record 20.5 per cent, prompting headlines about a "Green wave". Political analysts say the German Greens' result can be explained by increasing concerns about climate change as well as the party's positioning as a "real alternative" to the parties of government.