Section 16.91 - Contracts for fuel(1) In this section, "agency" has the meaning given under s. 16.52(7).(2) No contract for the purchase of fuel for any state-owned or operated heating or heating and power plant wherein the annual requirement is in excess of 12,500 therms is binding unless purchased upon specifications furnished by the secretary. A contract for fuel may be for any term deemed to be in the best interests of the state, but the term and any provisions for renewal or extension shall be incorporated in the bid specifications and the contract document.(3) Payments for fuel delivered under contracts specified in sub. (2) and for delivery costs shall be made upon vouchers approved by the secretary. Upon being audited and paid, the department shall charge each purchase against the appropriation to the agency which has jurisdiction over the facility at which the fuel is used. The secretary shall report on a quarterly basis to each such agency the total amount of payments charged under this subsection to each of its appropriations and facilities. Approval of the payments by the agency whose appropriation is charged is not required.