AMERICAN STATES WATER CO

A discussion on various regulatory matters is included in the section titled“Overview”in this Form 10-K’s“Management’s Discussion and Analysis of Financial Condition and Results of Operations.”The discussion below focuses on other regulatory matters and developments.

Certificates of Public Convenience and Necessity

GSWC and BVES hold Certificates of Public Convenience and Necessity (“CPCN”) granted by the CPUC in each of the ratemaking areas they serve. ASUS subsidiaries are regulated, if applicable, by the state in which it primarily conducts water and/or wastewater operations. FBWS holds a CPCN from the Public Utilities Commission of Texas. The Virginia State Corporation Commission exercises jurisdiction over ODUS as a public service company. The Maryland Public Service Commission approved the right of TUS to operate as a water and wastewater utility at Joint Base Andrews, Maryland, based on certain conditions and is expected to approve the right of PRUS to operate as a water and wastewater utility at Naval Air Station Patuxent River, Maryland when operations begin. The South Carolina Public Service Commission exercises jurisdiction over PSUS as a public service company. ONUS is regulated by the North Carolina Public Service Commission. ECUS, FRUS and BSUS are not subject to regulation by their respective states’ utility commissions.

GSWC and BVES are subject to regulation by the CPUC which has broad authority over service and facilities, rates, classification of accounts, valuation of properties, the purchase, disposition and mortgaging of properties necessary or useful in rendering public utility service, the issuance of securities, the granting of certificates of public convenience and necessity as to the extension of services and facilities and various other matters.

Rates that GSWC and BVES are authorized to charge are determined by the CPUC in general rate cases and are derived using rate base, cost of service and cost of capital, as projected for a future test year. Rates charged to customers vary according to customer class and rate jurisdiction and are generally set at levels allowing for recovery of prudently incurred costs, including a fair return on rate base. Rate base generally consists of the original cost of utility plant in service, plus certain other assets, such as working capital and inventory, less accumulated depreciation on utility plant in service, deferred income tax liabilities and certain other deductions.

GSWC is required to file a water general rate case application every three years according to a schedule established by the CPUC. General rate cases typically include an increase in the test year with inflation-rate adjustments for expenses in the second and third years of the rate case cycle. For capital projects, there are two test years. Rates are based on a forecast of expenses and capital costs for each test year. GSWC’s cost of capital is determined in a separate proceeding. Investor-owned water utilities serving California are required to file their cost of capital applications on a triennial basis. BVES’s general rate cases are typically filed every four years, which also includes a determination of BVES's cost of capital. Rates may also be increased by offsets for certain expense increases, including, but not limited to, supply-cost offset and balancing-account amortization, advice letter filings related to certain plant additions and other operating cost increases.

Neither the operations of AWR nor the operations and rates of ASUS are directly regulated by the CPUC. The CPUC does, however, regulate certain transactions between GSWC, BVES and ASUS and between GSWC and BVES and AWR.

General Rate Cases and Other Regulatory Matters

Water Segment

Recent Changes in Rates:

Rates that GSWC is authorized to charge are determined by the CPUC in general rate cases. Water revenues billed to customers for theyear ended December 31, 2022 and from January 1, 2023 through July 30, 2023 were based on 2021 adopted rates. On June 29, 2023, GSWC received a final decision on its water general rate case application that determined new rates for 2022 and 2023 and are effective and retroactive to January 1, 2022 and January 1, 2023, respectively. The impact of retroactive rates for the full year of 2022 and the second-year 2023 rate increases have been reflectedin theresults for 2023. GSWC filed for the implementation of new 2023 rate increases effective on July 31, 2023. In October 2023, GSWC also filed for the recovery of all retroactive amounts for 2022 and 2023 accumulated up to the effective date of the new 2023 rates, July 30, 2023. Surcharges were implemented in October 2023 to recover these cumulative retroactive rate differences over 36 months, which through December 31, 2023 totaled$52.8 million and were included in CPUC-authorized general rate case memorandum accounts recognized as regulatory assets.

Water General Rate Case for the years 2025–2027:

On August 14, 2023, GSWC filed a general rate case application for all its water regions and the general office. This general rate case will determine new water rates for the years 2025 – 2027. Among other things, GSWC requested capital budgets of approximately $611.4 million for the three-year capital cycle. GSWC also requested the continuation of mechanisms to accommodate fully decoupled revenues and sales and track differences between recorded and CPUC-authorized supply-related expenses. GSWC has requested the CPUC to permit it to continue using a revenue decoupling mechanism. As of the filing date of this Form 10-K, a proposed decision in the water general rate case is scheduled for the fourth quarter of 2024, with new rates to become effective January 1, 2025.

Cost of Capital Proceeding for the years 2022–2024:

On June 29, 2023, a final decision was adopted by the CPUC in the cost of capital proceeding that, among other things, (i) adopts GSWC’s requested capital structure; (ii) adopts a cost of debt of 5.1% for GSWC as compared to 6.6% previously authorized; (iii) adopts a return on equity of 8.85% for GSWC as compared to 8.9% previously authorized; (iv) allows for the continuation of the WCCM through December 31, 2024; and (v) adopts the new cost of capital for the three-year period commencing January 1, 2022 through December 31, 2024. Based on the final decision issued in June, all adjustments to rates were prospective and not retroactive. GSWC filed an advice letter that implemented the new cost of capital effective July 31, 2023.

On June 30, 2023, GSWC filed an advice letter to establish the WCCM for 2023, which increased the 8.85% adopted return on equity in the decision to 9.36% effective July 31, 2023. Additionally, on October 12, 2023, GSWC filed an advice letter to establish the WCCM for 2024, which has been approved by the CPUC, and increased GSWC’s 9.36% adopted return on equity to 10.06% effective January 1, 2024.

2024 COC Application:

Investor-owned water utilities serving California are required to file their cost of capital applications on a triennial basis. GSWC’s next cost of capital application was scheduled to be filed on May 1, 2024 effective for the years 2025 - 2027. However, GSWC, along with three other Class A investor-owned water utilities in California, filed a joint request with the CPUC to defer the filing deadline of the next cost of capital applications by one year, which was approved on February 2, 2024. The joint request asked that the utilities keep the cost of capital currently authorized for 2024 in effect through 2025, and file new cost of capital applications by May 1, 2025 to set the cost of debt, return on equity and capital structure starting January 1, 2026. GSWC’s current authorized rate of return on rate base is 7.93% effective January 1, 2024, which will continue in effect through December 31, 2025. Additionally, GSWC’s WCCM will remain active through the one year deferral period.

San Juan Oaks Mutual Acquisition:

In August 2023, GSWC entered into an agreement to purchase the water and wastewater system assets from San Juan Oaks Mutual Water Company (“SJO Mutual”) in San Benito County, California. The new master-planned community, known as San Juan Oaks, will serve up to an estimated 1,300 customers once the community is built as planned. The transaction is subject to CPUC approval. In December 2023, GSWC filed an application to establish the new service area and to set water and sewer rates for the San Juan Oaks service area in San Benito County, California.

Electric Segment

Recent Changes in Rates:

On August 30, 2022, BVES filed a new general rate case application with the CPUC to determine new rates for the years 2023–2026. Electric revenues billed to customers for 2023 were based on 2022 adopted rates and will remain in effect until finalization of the pending general rate case application. On December 15, 2022, the CPUC approved a decision for BVES to establish a general rate case memorandum account that makes the new 2023 rates effective and retroactive to January 1, 2023. Because new rates are expected to be retroactive to January 1, 2023, when a decision is issued in the electric general rate case, cumulative adjustments will be recorded at that time.

Vegetation Management, Wildfire Mitigation Plans and Legislation:

The CPUC adopted regulations intended to enhance the fire safety of overhead electric power lines. Those regulations included increased minimum clearances around electric power lines. BVES was authorized to track incremental costs incurred to implement the regulations in a fire hazard prevention memorandum account for the purpose of obtaining cost recovery in a future general rate case. The August 2019 final decision also authorized BVES to record incremental costs related to vegetation management, such as costs for increased minimum clearances around electric power lines, in the CPUC-approved memorandum account for future recovery. As of December 31, 2023, BVES had approximately $11.8 million in incremental vegetation management costs recorded as a regulatory asset. As part of its general rate case application filing with the CPUC in August 2022, BVES requested recovery of the costs accumulated in this memorandum account as of March 31, 2022.

California legislation enacted in September 2018 requires all investor-owned electric utilities to have a wildfire mitigation plan (“WMP”) approved by the OEIS and ratified by the CPUC. The WMP must include a utility’s plans on constructing, maintaining, and operating its electrical lines and equipment to minimize the risk of catastrophic wildfire. In May 2023, BVES submitted its WMP covering the three-year period 2023-2025 to OEIS for approval prior to going to the CPUC for ratification. In the fourth quarter of 2023, OEIS issued a final decision of approval and the CPUC ratified BVES’s 2023-2025 WMP. As of December 31, 2023, BVES has approximately$5.9 million related to expenses accumulated in its WMP memorandum accounts that have been recognized as regulatory assets for future recovery. All capital expenditures and other costs incurred through December 31, 2023 as a result of BVES’s WMPs are not currently in rates and have been filed for future recovery in BVES’s general rate case application in August 2022.

Additionally, the governor of California approved AB 1054 in July 2019 that, among other things, changed the burden of proof applicable in CPUC proceedings in which an electric utility with a valid safety certification seeks to recover wildfire costs. Previously, an electric utility seeking to recover costs had the burden to prove that it acted reasonably. Under AB 1054, if an electric utility has a valid safety certification, it will be presumed to have acted reasonably unless a party to the relevant proceeding creates a “serious doubt” as to the reasonableness of the utility’s conduct. In December 2023, OEIS issued a renewal of the safety certification for BVES for 12 months.

For more information regarding significant regulatory matters, see Note 3 of “Notes to Financial Statements” included in Part II, Item 8, in Financial Statements and Supplementary Data.