The exercise of the powers granted by sections 136A.25 to 136A.42, will be in all respects for the benefit of the people of this state, for the increase of their commerce, welfare and prosperity, and for the improvement of their health and living conditions, and as the operation and maintenance of a project by the authority or its agent will constitute the performance of an essential public function, neither the authority nor its agent shall be required to pay any taxes or assessments upon or in respect of a project or any property acquired or used by the authority or its agent under the provisions of sections 136A.25 to 136A.42, or upon the income therefrom.