Sweeping changes would need to be made across the city in areas ranging from home heating to waste management to hit 2030 targets but, for the council, the focus would have to be on transport-related spending.
The difference between a high-investment track on transport for the next six years and a lower-speed track to help rein in emissions is almost $50million.
This could determine how quickly such things as a walking and cycling plan might be delivered and at what rate urban centres are upgraded.
Last month, the council delayed potential adoption of the plan, in part because of lack of information about implementation costs.
Such information, as well as a rundown about various strands of action, is now in front of councillors.
They are due to decide on Monday whether they endorse the plan.
Reducing emissions from the transport sector is considered a high priority to support achievement of targets.
The high-investment scenario for transport, where the council would take action at the highest level deemed feasible and deliverable, was calculated to be worth about $137.8m.
At the other end of the range, transport spending could be $88m.
All other council actions for the plan could cost almost $18.7m in the high-investment scenario, $15.1m in a medium scenario and about $10.5m in the low-investment scenario.
Much action is already planned or has been included in draft budget preparations for the council’s 2024-34 long-term plan.
That includes constructing a new Green Island composting facility and delivering the Dunedin tunnels cycle trail.
