XEL XCEL ENERGY INC Other Situations 8-K Filing 2023 - Electric Rate Case Filing Xcel Energy's subsidiary, Southwestern Public Service Company, has filed an electric rate case seeking a $149 million increase in base rate revenue with the Public Utility Commission of Texas, which is expected to result in a 13% increase in customer bills.Get access to all SEC 8-K filings of the XCEL ENERGY INC