Any municipality may, by vote of its legislative body or, in a municipality where the legislative body is a town meeting, by vote of the board of selectmen, abate up to one hundred per cent of the property taxes due for any tax year, for not more than twenty-five tax years, with respect to personal property of any gas company, as defined in section 16-1, in order to facilitate natural gas expansion projects in such municipality. The gas company shall include the amount of such abatement when calculating the hurdle rate pursuant to section 16-19ww for gas expansion projects within such municipality.