Both Alberta and Saskatchewan are fuming with the federal environment minister over proposals to shut off methane releases from oil and gas sites by 2030.
The new targets seek to cut energy industry burn-offs by at least 75 per cent over 2012 levels by 2030.
The present rules aim for a 40 to 45 per cent reduction by 2025.
Several Canadian delegations including the federal government and provincial leaders are currently in Dubai for the COP28 global climate meeting.
Cutting methane is viewed as one way to reduce global warming by limiting its ability to trap heat.
The federal environment minister Steven Guilbeault estimates it will cost the industry about $15 billion to implement the regulations between 2027 to 2040 while keeping about 200 million tonnes of greenhouse gases out of the atmosphere over the period.
The Alberta premier is against a total ban on flaring citing costs, and its need as an industry health and safety practice. Saskatchewan officials see the move as the federal government stepping on provincial jurisdiction.