On January 17, 2014, PSO filed a base rate case with the Oklahoma Corporation Commission. The filing requests a total increase of $45 million. The increase is comprised of $38 million from a traditional cost of service test year determination, and $7 million from the first year of a proposed advanced metering infrastructure tracker.
Rates proposed in this filing are based on a July 31, 2013 test year with pro-forma adjustments 6 months thereafter. The requested ROE is 10.50%. PSO can put rates into effect, subject to refund, after 180 days of the case filing, however PSO proposed a delay in implementing new rates in 2014 until after summer season, which is after October.