In addition to the powers otherwise conferred on districts of this state, such a district owning and operating an electric light and power system may plan, finance, construct, acquire, operate, own and maintain an undivided interest in common facilities within or without the state jointly with one or more other districts, with one or more cities, with one or more electric cooperatives, or with one or more other persons or with any combination of such districts, cities, electric cooperatives or persons, and may make such plans and enter into contracts and agreements as are necessary or appropriate for such joint planning, financing, construction, acquisition, operation, ownership or maintenance.
ORS 261.245