The recently elected government of Alberta said Thursday it will double a carbon tax on industrial emissions of greenhouse gases by 2017, calling it a first step in toughening this oil-rich province’s environmental policies. In a move closely watched by Canadian oil and gas producers, the left-leaning New Democratic Party, or NDP, government said the policy is part of a broader review of environmental policies that will result in additional measures to reduce greenhouse-gas emissions in time for a year-end United Nations climate-change conference in Paris. Alberta implemented its current carbon tax—the first in North America—in 2007, but that was set to expire at the end of this month. The new policy will increase levies on large-scale emitters of carbon dioxide to 30 Canadian dollars ($24.19) a metric ton by 2017, up from C$15. Alberta’s energy industry has been shaken by the NDP’s win, and has warned about […]