Section 476.8 476.8 Utility charges and service.
Every public utility is required to furnish reasonably adequate service and facilities.
The charge made by any public utility for any heat, light, gas, energy efficiency and renewable energy programs, water or power produced, transmitted, delivered or furnished, or communications services, or for any service rendered or to be rendered in connection therewith shall be reasonable and just, and every unjust or unreasonable charge for such service is prohibited and declared unlawful. In determining reasonable and just rates, the board shall consider all factors relating to value and shall not be bound by rate base decisions or rulings made prior to the adoption of this chapter. The board, in determining the value of materials or services to be included in valuations or costs of operations for rate-making purposes, may disallow any unreasonable profit made in the sale of materials to or services supplied for any public utility by any firm or corporation owned or controlled directly or indirectly by such utility or any affiliate, subsidiary, parent company, associate or any corporation whose controlling stockholders are also controlling stockholders of such utility. The burden of proof shall be on the public utility to prove that no unreasonable profit is made.