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v3.22.1

Retirement benefits (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Defined Benefit Plan |  |  |
Contributions made to defined benefit plans | $ 10,000 | $ 9,000 |
Contributions expected to be paid in current year | 41,000 |  | $ 52,000
Expected payments for remainder of fiscal year | 3,000 |  | 1,000
Retirement benefits expense | $ 12,000 | 11,000 |
Number of years for which regulatory asset/liability for each utility will be amortized, beginning with respective utility's next rate case (in years) | 5 years |  |
Defined contribution plan, expenses recognized | $ 2,000 | 1,700 |
Cash contributions by the employer to defined contribution plan | $ 1,900 | 1,800 |
Employer contribution, percent of employee annual compensation | 10.00% |  |
Pension benefits |  |  |
Defined Benefit Plan |  |  |
Service cost | $ 19,824 | 20,464 |
Interest cost | 19,811 | 18,801 |
Expected return on plan assets | (35,333) | (33,067) |
Amortization of net prior period gain | 0 | 0 |
Amortization of net actuarial (gain) losses | 6,297 | 1,556 |
Net periodic pension/benefit cost (return) | 10,599 | 7,754 |
Impact of PUC D&Os | 9,551 | 11,167 |
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) | 20,150 | 18,921 |
Other benefits |  |  |
Defined Benefit Plan |  |  |
Service cost | 656 | 705 |
Interest cost | 1,637 | 1,569 |
Expected return on plan assets | (3,397) | (3,233) |
Amortization of net prior period gain | (232) | (383) |
Amortization of net actuarial (gain) losses | (3) | 254 |
Net periodic pension/benefit cost (return) | (1,339) | (1,088) |
Impact of PUC D&Os | 1,219 | 970 |
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) | (120) | (118) |
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |
Defined Benefit Plan |  |  |
Contributions made to defined benefit plans | 10,000 | 9,000 |
Contributions expected to be paid in current year | 41,000 |  | 51,000
Expected payments for remainder of fiscal year | 1,000 |  | $ 1,000
Retirement benefits expense | 12,000 | 12,000 |
Defined contribution plan, expenses recognized | 900 | 800 |
Cash contributions by the employer to defined contribution plan | 900 | 800 |
Hawaiian Electric Company, Inc. and Subsidiaries | Pension benefits |  |  |
Defined Benefit Plan |  |  |
Service cost | 19,318 | 19,994 |
Interest cost | 18,462 | 17,531 |
Expected return on plan assets | (33,546) | (31,368) |
Amortization of net prior period gain | 0 | 0 |
Amortization of net actuarial (gain) losses | 6,125 | 2,559 |
Net periodic pension/benefit cost (return) | 10,359 | 8,716 |
Impact of PUC D&Os | 9,551 | 11,167 |
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) | 19,910 | 19,883 |
Hawaiian Electric Company, Inc. and Subsidiaries | Other benefits |  |  |
Defined Benefit Plan |  |  |
Service cost | 649 | 699 |
Interest cost | 1,573 | 1,504 |
Expected return on plan assets | (3,347) | (3,182) |
Amortization of net prior period gain | (231) | (383) |
Amortization of net actuarial (gain) losses | 0 | 250 |
Net periodic pension/benefit cost (return) | (1,356) | (1,112) |
Impact of PUC D&Os | 1,219 | 970 |
Net periodic pension/benefit cost (adjusted for impact of PUC D&Os) | $ (137) | $ (142) |

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