(1) A mass transit district may enter into transactions with persons or entities for the supply or delivery of electricity or diesel fuel on an economic, dependable and cost-effective basis, including transactions involving financial products contracts and agreements for exchange of fixed and variable pricing agreements and other service contracts that reduce the risk of economic losses in transactions for the supply or delivery of electricity or diesel fuel.
(2) Notwithstanding subsection (1) of this section, a mass transit district may not enter into a transaction for the supply or delivery of electricity or diesel fuel that:
(a) Constitutes the investment of surplus funds for the purpose of receiving interest or other earnings from the investment; or
(b) Is for any purpose other than the supply or delivery of electricity or diesel fuel on a cost-effective basis.