| In determining just and reasonable rates, tolls and charges, |
| the commission shall fix a reasonable value upon all the property |
| of a public utility and upon an electric plant to the extent paid |
| for by the utility on the premises of any of its customers, which |
| is used or required to be used in its service to the public |
| within the State and a fair return on that property. In fixing a |
| reasonable value, the commission shall give due consideration to |
| evidence of the cost of the property when first devoted to public |
| use and the prudent acquisition cost to the utility, less |
| depreciation on each, and any other material and relevant factors |
or evidence, but the other factors shall may not include current |
| value. In making a valuation, the commission may consult reports, |
| records or other information available to it in the office of any |
| state office or board. In the event of rate determinations for a |
| public utility's ownership interest under a joint ownership |
| agreement that are subject to the primary jurisdiction of the |
| Federal Energy Regulatory Commission, the commission shall make |
| the rate determinations in a manner that excludes from recovery |
| in retail rates any cost found to be imprudent or excluded from |
| wholesale rates by the Federal Energy Regulatory Commission. |