PURPOSE: This rule prescribes information which must be filed by all electric utilities when filing for a general company-wide increase in rates. As noted in the rule, additional provisions pertaining to the filing requirements for general rate increase requests are found at 4 CSR 240-3.030.

1. (1) In addition to the requirements of 4 CSR 240-3.030, any electric utility which submits a general rate increase request shall submit the following:

   1. (A) Its depreciation study, database and property unit catalog. However, an electric utility need not submit a depreciation study, database or property unit catalog to the extent that the commission’s staff received these items from the utility during the three (3) years prior to the utility filing for a general rate increase or before five (5) years have elapsed since the last time the commission’s staff received a depreciation study, database and property unit catalog from the utility. The depreciation study, database and property unit catalog shall be compiled as follows:

      1. 1. The study shall reflect the average life and remaining

life of each primary plant account or subaccount;

1. 2. The database shall consist of dollar amounts, by plant

account or subaccount, representing—

1. A. Annual dollar additions and dollar retirements by

vintage year and year retired, beginning with the earliest year of available data;

1. B. Reserve for depreciation;
2. C. Surviving plant balance as of the study date; and
3. D. Estimated date of final retirement and surviving dol-

lar investment for each warehouse, electric generating facility, combustion turbine, general office building or other large structure; and

1. 3. The property unit catalog shall contain a description of

each retirement unit used by the utility.

AUTHORITY: section 386.250, RSMo 2000.* This rule originally filed as 4 CSR 240-3.160. Original rule filed Aug. 16, 2002, effective April 30, 2003. Moved to 20 CSR 4240-3.160, effective Aug. 28, 2019. *Original authority: 386.250, RSMo 1939, amended 1963, 1967, 1977, 1980, 1987, 1988, 1991, 1993, 1995, 1996.