Miss. Code § 77-3-205
If such plans or any modification thereof shall be approved by the commission as provided by paragraph (b) of Section 77-3-203, the commission may enter an order either in conjunction with such approval, if notice has sufficiently dealt with the subject matter, or pursuant to special application and notice thereof to the parties, that will determine whether the right and responsibility of constructing the facilities for making such connection shall devolve on the owner or the utility and whether the whole or any part of the reasonable expense of connecting such facilities with the system or systems of the utility or utilities affected should be borne initially by such utility or utilities. If the commission should relieve any utility affected from initially undertaking the whole or any part of such connection expense, the commission may nevertheless include the portion of such expense to be initially borne by the owner in the cost of facilities for which the owner may be reimbursed as hereinafter provided.
Miss. Code § 77-3-205