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v3.22.1

Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2022
Retirement Benefits [Abstract] |
Employee Benefit Plans | Employee Benefit Plans The components of net periodic benefit costs for Registrant’s pension plan, postretirement medical benefit plan and SERP for the three months ended March 31, 2022 and 2021 were as follows:
|  | For The Three Months Ended March 31,
|  | Pension Benefits |  | Other Postretirement Benefits |  | SERP
(dollars in thousands) |  | 2022 |  | 2021 |  | 2022 |  | 2021 |  | 2022 |  | 2021
Components of Net Periodic Benefits Cost: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 1,480 |  |  | $ | 1,625 |  |  | $ | 33 |  |  | $ | 40 |  |  | $ | 298 |  |  | $ | 348 |
Interest cost |  | 1,844 |  |  | 1,712 |  |  | 16 |  |  | 31 |  |  | 256 |  |  | 229 |
Expected return on plan assets |  | (3,292) |  |  | (3,134) |  |  | (147) |  |  | (134) |  |  | — |  |  | — |
Amortization of prior service cost |  | 109 |  |  | 109 |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of actuarial (gain) loss |  | — |  |  | 993 |  |  | (412) |  |  | (287) |  |  | 145 |  |  | 419 |
Net periodic benefits costs under accounting standards |  | 141 |  |  | 1,305 |  |  | (510) |  |  | (350) |  |  | 699 |  |  | 996 |
Regulatory adjustment - deferred |  | — |  |  | (351) |  |  | — |  |  | — |  |  | — |  |  | — |
Total expense (benefit) recognized, before surcharges and allocation to overhead pool |  | $ | 141 |  |  | $ | 954 |  |  | $ | (510) |  |  | $ | (350) |  |  | $ | 699 |  |  | $ | 996 |
For the pension plan obligation, Registrant used a discount rate of 2.89% as of December 31, 2021 to determine the projected benefit obligation (“PBO”) of $259.8 million. Discount rates as of March 31, 2022 are approximately 89-basis points higher than those used as of December 31, 2021 based on recent changes in market interest-rate conditions. An 89-basis point increase in the assumed discount rate would have decreased the PBO as of December 31, 2021 by approximately 12% or $30.4 million. In 2022, Registrant expects to contribute approximately $3.1 million to its pension plan. As authorized by the CPUC in the water and electric general rate case decisions, GSWC and BVESI each utilize two-way balancing accounts to track differences between the forecasted annual pension expense in rates, or expected to be in rates, and the actual annual expense recorded in accordance with the accounting guidance for pension costs. During the three months ended March 31, 2022, GSWC's actual pension expense was lower than the amounts included in water customer rates. During the three months ended March 31, 2021, GSWC's actual pension expense was higher than the amounts included in water customer rates by $351,000. BVESI's actual expense was lower than the amounts included in electric customer rates for all periods presented. As of March 31, 2022, GSWC and BVESI had over-collections in their two-way pension balancing accounts of $134,000 and $372,000, respectively, included as part of regulatory assets and liabilities (Note 3).

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