The coastal US city of Bellingham (pictured) in Washington State is discussing a ban on all natural gas for residential heating. The progressive city council is due to debate legislation in the coming weeks and it is unclear if the measures have sufficient support.  “This is about going where we didn’t go before,” Councillor Michael Lilliquist told the New York Times. “We’ve grabbed the less controversial and low-hanging fruit. This fruit is higher on the tree.” Owners of all homes and commercial buildings would be compelled to convert heating appliances from gas to electric heat-pump technology or another alternative by 2040 or possibly 2035.  Bellingham is a destination for outdoor sports enthusiasts, offering the northern Cascade Mountains and kayaking among the San Juan Islands. The proposed measures have prompted the energy industry to spend US$1 million promoting the reliability of gas and warning of the costs of switching heating sources.  Cascade Natural Gas, the provider in Bellingham, and other firms claim a full conversion to electricity would cost homeowners as much as US$82,750. Lilliquist dismissed the figure as propaganda but conceded that the barriers to impleme...