The Alberta group that recently organized rallies against the provincial carbon tax is hoping to get at least 500,000 signatures on its petition demanding a plebiscite on the carbon tax issue.

The Alberta Wide Rally movement, which calls itself a grassroots organization, held about a dozen rallies throughout the province earlier this month.

Todd Beasley, Alberta Wide Rally's managing director, calls the carbon tax "an economy killer."

The NDP say the tax is a way to fight climate change and reduce the province's carbon footprint.

Beasley told the Calgary Eyeopener on Monday the government does not have a mandate to implement the tax.

"Most certainly in Alberta, Rachel Notley did not go to the people and say, 'This is what we are going to do', moreover 'This is the economic cost of it,'" said Beasley.

The Alberta Wide Rally hopes to submit the petition to the legislature within the next couple of months.

"Our goal is to secure 500,000 signatures of support in a petition, asking the Alberta Provincial Legislative Assembly to urge the provincial government to hold a plebiscite/referendum/vote, in support or opposition to the Alberta Provincial Governments Bill 20, the 'Climate Leadership Plan,'" the group says on its website.

For more information, the group has set up a web page about the petition, or visit the Government of Alberta's website for details about the carbon levy.