4. Any other person,
if the right to full possession and to all of the use, services, output, and capacity of any such electric project during the original estimated useful life thereof is vested, subject to creditors' rights, in any one or more of such legal entities, electric utilities, or foreign public utilities, or in any combination thereof. Any such public agency or legal entity, or both, may act as agent or designate one or more persons, whether or not participating in an electric project, to act as its agent in connection with the planning, design, engineering, licensing, acquisition, construction, completion, management, control, operation, maintenance, repair, renewal, addition, replacement, improvement, modification, insuring, decommissioning, cleanup, retirement, or disposal, or all of the foregoing, of such electric project or electric projects.