It is the intent of the Legislature in enacting this chapter to protect electric customers, both present and future, from the risks of unreasonable costs associated with ownership and operation of nuclear powerplants. To that end, the commission or board with respect to each electric utility owning or operating a nuclear powerplant, shall develop regulations and guidelines that promote realism in estimating costs, provide periodic review procedures that create maximum incentives for accurate cost estimations, and provide for decommissioning cost controls.