Within 30 days after the confirming vote provided for in N.H. Rev. Stat. § 38:3, 38:4, or 38:5 the governing body shall notify in writing any utility engaged, at the time of the vote, in generating or distributing electricity, gas, or water for sale in the municipality, of the vote. The municipality notifying any utility in such manner may purchase all or such portion of the utility’s plant and property located within such municipality that the governing body determines to be necessary for the municipal utility service, and shall purchase that portion, if any, lying without the municipality which the public interest may require, pursuant to N.H. Rev. Stat. § 38:11 as determined by the commission. The notice to such utility shall include an inquiry as to whether the utility elects to sell, in the manner hereinafter provided, that portion of its plant and property located within or without the municipality which the municipality has identified as being necessary for the municipal utility service.