XML 51 R22.htm IDEA: XBRL DOCUMENT
v3.20.4

Asset Retirement Obligations (AROs) | 12 Months Ended
--- | ---
Dec. 31, 2020
Asset Retirement Obligation [Line Items] |
Asset Retirement Obligations (AROs) | Asset Retirement Obligations (AROs) PSEG, PSE&G and PSEG Power recognize liabilities for the expected cost of retiring long-lived assets for which a legal obligation exists to remove or dispose of an asset or some component of an asset at retirement. These AROs are recorded at fair value in the period in which they are incurred and are capitalized as part of the carrying amount of the related long-lived assets. PSEG Power accretes the ARO liability to reflect the passage of time with the corresponding expense recorded in O&M. PSE&G, as a rate-regulated entity, recognizes Regulatory Assets or Liabilities as a result of timing differences between the recording of costs and costs recovered through the rate-making process. PSE&G has conditional AROs primarily for legal obligations related to the removal of treated wood poles and the requirement to seal natural gas pipelines at all sources of gas when the pipelines are no longer in service. PSE&G does not record an ARO for its protected steel and poly-based natural gas lines, as management believes that these categories of gas lines have an indeterminable life. PSEG Power’s ARO liability primarily relates to the decommissioning of its nuclear power plants in accordance with NRC requirements. PSEG Power has an independent external trust that is intended to fund decommissioning of its nuclear facilities upon termination of operation. For additional information, see Note 11. Trust Investments. PSEG Power also identified conditional AROs primarily related to PSEG Power’s fossil generation units and solar facilities, including liabilities for removal of asbestos, ash ponds, stored hazardous liquid material and underground storage tanks from industrial power sites, and demolition of certain plants, and the restoration of the sites at which they reside, when the plants are no longer in service. To estimate the fair value of its AROs, PSEG Power uses a probability weighted, discounted cash flow model which, on a unit by unit basis, considers multiple outcome scenarios that include significant estimates and assumptions, and are based on third-party decommissioning cost estimates, cost escalation rates, inflation rates and discount rates. Updated cost studies are obtained triennially unless new information necessitates more frequent updates. The most recent cost study was done in 2018. When assumptions are revised to calculate fair values of existing AROs, generally, the ARO balance and corresponding long-lived asset are adjusted which impact the amount of accretion and depreciation expense recognized in future periods. For PSE&G, Regulatory Assets and Regulatory Liabilities result when accretion and amortization are adjusted to match rates established by regulators resulting in the regulatory deferral of any gain or loss. The changes to the ARO liabilities for PSEG, PSE&G and PSEG Power during 2019 and 2020 are presented in the following table:
|  |  | PSEG |  | PSE&G |  | PSEG Power |  | Other |
|  |  | Millions |
| ARO Liability as of January 1, 2019 |  | $ | 1,063 |  |  | $ | 302 |  |  | $ | 758 |  |  | $ | 3 |  |
| Liabilities Settled |  | (19) |  |  | (18) |  |  | (1) |  |  | — |  |
| Liabilities Incurred |  | 3 |  |  | 1 |  |  | 2 |  |  | — |  |
| Accretion Expense |  | 40 |  |  | — |  |  | 40 |  |  | — |  |
| Accretion Expense Deferred and Recovered in Rate Base (A) |  | 16 |  |  | 16 |  |  | — |  |  | — |  |
| Revision to Present Values of Estimated Cash Flows |  | (16) |  |  | 2 |  |  | (18) |  |  | — |  |
| ARO Liability as of December 31, 2019 |  | $ | 1,087 |  |  | $ | 303 |  |  | $ | 781 |  |  | $ | 3 |  |
| Liabilities Settled |  | (9) |  |  | (7) |  |  | (2) |  |  | — |  |
| Accretion Expense |  | 42 |  |  | — |  |  | 42 |  |  | — |  |
| Accretion Expense Deferred and Recovered in Rate Base (A) |  | 17 |  |  | 17 |  |  | — |  |  | — |  |
| Revision to Present Values of Estimated Cash Flows |  | 75 |  |  | 1 |  |  | 74 |  |  | — |  |
| ARO Liability as of December 31, 2020 |  | $ | 1,212 |  |  | $ | 314 |  |  | $ | 895 |  |  | $ | 3 |  |
(A)Not reflected as expense in Consolidated Statements of Operations In early 2020, the NRC approved Peach Bottom’s second license extension for both units. Concurrent with the license extensions, PSEG Power has extended the useful life of the asset to match the 80-year life expectation and reassessed the related Asset Retirement Cost (ARC) and ARO assumptions. This resulted in an increase to the ARC asset and ARO liability of $74 million, primarily due to lower discount rates offset by a longer discounting period as a result of the Peach Bottom units’ longer expected useful life. In addition, PSEG Power reviewed its probabilities of early retirement on its nuclear units and concluded that no adjustments were necessary as of December 31, 2020. In 2019, PSEG Power’s decrease of $18 million was primarily due to the sale of its interests in the Keystone and Conemaugh units. These changes had an immaterial impact in PSEG Power’s Consolidated Statement of Operations. See Note 4. Early Plant Retirements/Asset Dispositions for additional information.
PSEG Power LLC |
Asset Retirement Obligation [Line Items] |
Asset Retirement Obligations (AROs) | Asset Retirement Obligations (AROs) PSEG, PSE&G and PSEG Power recognize liabilities for the expected cost of retiring long-lived assets for which a legal obligation exists to remove or dispose of an asset or some component of an asset at retirement. These AROs are recorded at fair value in the period in which they are incurred and are capitalized as part of the carrying amount of the related long-lived assets. PSEG Power accretes the ARO liability to reflect the passage of time with the corresponding expense recorded in O&M. PSE&G, as a rate-regulated entity, recognizes Regulatory Assets or Liabilities as a result of timing differences between the recording of costs and costs recovered through the rate-making process. PSE&G has conditional AROs primarily for legal obligations related to the removal of treated wood poles and the requirement to seal natural gas pipelines at all sources of gas when the pipelines are no longer in service. PSE&G does not record an ARO for its protected steel and poly-based natural gas lines, as management believes that these categories of gas lines have an indeterminable life. PSEG Power’s ARO liability primarily relates to the decommissioning of its nuclear power plants in accordance with NRC requirements. PSEG Power has an independent external trust that is intended to fund decommissioning of its nuclear facilities upon termination of operation. For additional information, see Note 11. Trust Investments. PSEG Power also identified conditional AROs primarily related to PSEG Power’s fossil generation units and solar facilities, including liabilities for removal of asbestos, ash ponds, stored hazardous liquid material and underground storage tanks from industrial power sites, and demolition of certain plants, and the restoration of the sites at which they reside, when the plants are no longer in service. To estimate the fair value of its AROs, PSEG Power uses a probability weighted, discounted cash flow model which, on a unit by unit basis, considers multiple outcome scenarios that include significant estimates and assumptions, and are based on third-party decommissioning cost estimates, cost escalation rates, inflation rates and discount rates. Updated cost studies are obtained triennially unless new information necessitates more frequent updates. The most recent cost study was done in 2018. When assumptions are revised to calculate fair values of existing AROs, generally, the ARO balance and corresponding long-lived asset are adjusted which impact the amount of accretion and depreciation expense recognized in future periods. For PSE&G, Regulatory Assets and Regulatory Liabilities result when accretion and amortization are adjusted to match rates established by regulators resulting in the regulatory deferral of any gain or loss. The changes to the ARO liabilities for PSEG, PSE&G and PSEG Power during 2019 and 2020 are presented in the following table:
|  |  | PSEG |  | PSE&G |  | PSEG Power |  | Other |
|  |  | Millions |
| ARO Liability as of January 1, 2019 |  | $ | 1,063 |  |  | $ | 302 |  |  | $ | 758 |  |  | $ | 3 |  |
| Liabilities Settled |  | (19) |  |  | (18) |  |  | (1) |  |  | — |  |
| Liabilities Incurred |  | 3 |  |  | 1 |  |  | 2 |  |  | — |  |
| Accretion Expense |  | 40 |  |  | — |  |  | 40 |  |  | — |  |
| Accretion Expense Deferred and Recovered in Rate Base (A) |  | 16 |  |  | 16 |  |  | — |  |  | — |  |
| Revision to Present Values of Estimated Cash Flows |  | (16) |  |  | 2 |  |  | (18) |  |  | — |  |
| ARO Liability as of December 31, 2019 |  | $ | 1,087 |  |  | $ | 303 |  |  | $ | 781 |  |  | $ | 3 |  |
| Liabilities Settled |  | (9) |  |  | (7) |  |  | (2) |  |  | — |  |
| Accretion Expense |  | 42 |  |  | — |  |  | 42 |  |  | — |  |
| Accretion Expense Deferred and Recovered in Rate Base (A) |  | 17 |  |  | 17 |  |  | — |  |  | — |  |
| Revision to Present Values of Estimated Cash Flows |  | 75 |  |  | 1 |  |  | 74 |  |  | — |  |
| ARO Liability as of December 31, 2020 |  | $ | 1,212 |  |  | $ | 314 |  |  | $ | 895 |  |  | $ | 3 |  |
(A)Not reflected as expense in Consolidated Statements of Operations In early 2020, the NRC approved Peach Bottom’s second license extension for both units. Concurrent with the license extensions, PSEG Power has extended the useful life of the asset to match the 80-year life expectation and reassessed the related Asset Retirement Cost (ARC) and ARO assumptions. This resulted in an increase to the ARC asset and ARO liability of $74 million, primarily due to lower discount rates offset by a longer discounting period as a result of the Peach Bottom units’ longer expected useful life. In addition, PSEG Power reviewed its probabilities of early retirement on its nuclear units and concluded that no adjustments were necessary as of December 31, 2020. In 2019, PSEG Power’s decrease of $18 million was primarily due to the sale of its interests in the Keystone and Conemaugh units. These changes had an immaterial impact in PSEG Power’s Consolidated Statement of Operations. See Note 4. Early Plant Retirements/Asset Dispositions for additional information.
Public Service Electric and Gas Company |
Asset Retirement Obligation [Line Items] |
Asset Retirement Obligations (AROs) | Asset Retirement Obligations (AROs) PSEG, PSE&G and PSEG Power recognize liabilities for the expected cost of retiring long-lived assets for which a legal obligation exists to remove or dispose of an asset or some component of an asset at retirement. These AROs are recorded at fair value in the period in which they are incurred and are capitalized as part of the carrying amount of the related long-lived assets. PSEG Power accretes the ARO liability to reflect the passage of time with the corresponding expense recorded in O&M. PSE&G, as a rate-regulated entity, recognizes Regulatory Assets or Liabilities as a result of timing differences between the recording of costs and costs recovered through the rate-making process. PSE&G has conditional AROs primarily for legal obligations related to the removal of treated wood poles and the requirement to seal natural gas pipelines at all sources of gas when the pipelines are no longer in service. PSE&G does not record an ARO for its protected steel and poly-based natural gas lines, as management believes that these categories of gas lines have an indeterminable life. PSEG Power’s ARO liability primarily relates to the decommissioning of its nuclear power plants in accordance with NRC requirements. PSEG Power has an independent external trust that is intended to fund decommissioning of its nuclear facilities upon termination of operation. For additional information, see Note 11. Trust Investments. PSEG Power also identified conditional AROs primarily related to PSEG Power’s fossil generation units and solar facilities, including liabilities for removal of asbestos, ash ponds, stored hazardous liquid material and underground storage tanks from industrial power sites, and demolition of certain plants, and the restoration of the sites at which they reside, when the plants are no longer in service. To estimate the fair value of its AROs, PSEG Power uses a probability weighted, discounted cash flow model which, on a unit by unit basis, considers multiple outcome scenarios that include significant estimates and assumptions, and are based on third-party decommissioning cost estimates, cost escalation rates, inflation rates and discount rates. Updated cost studies are obtained triennially unless new information necessitates more frequent updates. The most recent cost study was done in 2018. When assumptions are revised to calculate fair values of existing AROs, generally, the ARO balance and corresponding long-lived asset are adjusted which impact the amount of accretion and depreciation expense recognized in future periods. For PSE&G, Regulatory Assets and Regulatory Liabilities result when accretion and amortization are adjusted to match rates established by regulators resulting in the regulatory deferral of any gain or loss. The changes to the ARO liabilities for PSEG, PSE&G and PSEG Power during 2019 and 2020 are presented in the following table:
|  |  | PSEG |  | PSE&G |  | PSEG Power |  | Other |
|  |  | Millions |
| ARO Liability as of January 1, 2019 |  | $ | 1,063 |  |  | $ | 302 |  |  | $ | 758 |  |  | $ | 3 |  |
| Liabilities Settled |  | (19) |  |  | (18) |  |  | (1) |  |  | — |  |
| Liabilities Incurred |  | 3 |  |  | 1 |  |  | 2 |  |  | — |  |
| Accretion Expense |  | 40 |  |  | — |  |  | 40 |  |  | — |  |
| Accretion Expense Deferred and Recovered in Rate Base (A) |  | 16 |  |  | 16 |  |  | — |  |  | — |  |
| Revision to Present Values of Estimated Cash Flows |  | (16) |  |  | 2 |  |  | (18) |  |  | — |  |
| ARO Liability as of December 31, 2019 |  | $ | 1,087 |  |  | $ | 303 |  |  | $ | 781 |  |  | $ | 3 |  |
| Liabilities Settled |  | (9) |  |  | (7) |  |  | (2) |  |  | — |  |
| Accretion Expense |  | 42 |  |  | — |  |  | 42 |  |  | — |  |
| Accretion Expense Deferred and Recovered in Rate Base (A) |  | 17 |  |  | 17 |  |  | — |  |  | — |  |
| Revision to Present Values of Estimated Cash Flows |  | 75 |  |  | 1 |  |  | 74 |  |  | — |  |
| ARO Liability as of December 31, 2020 |  | $ | 1,212 |  |  | $ | 314 |  |  | $ | 895 |  |  | $ | 3 |  |
(A)Not reflected as expense in Consolidated Statements of Operations In early 2020, the NRC approved Peach Bottom’s second license extension for both units. Concurrent with the license extensions, PSEG Power has extended the useful life of the asset to match the 80-year life expectation and reassessed the related Asset Retirement Cost (ARC) and ARO assumptions. This resulted in an increase to the ARC asset and ARO liability of $74 million, primarily due to lower discount rates offset by a longer discounting period as a result of the Peach Bottom units’ longer expected useful life. In addition, PSEG Power reviewed its probabilities of early retirement on its nuclear units and concluded that no adjustments were necessary as of December 31, 2020. In 2019, PSEG Power’s decrease of $18 million was primarily due to the sale of its interests in the Keystone and Conemaugh units. These changes had an immaterial impact in PSEG Power’s Consolidated Statement of Operations. See Note 4. Early Plant Retirements/Asset Dispositions for additional information.

X
- Definition [Line Items] for Asset Retirement Obligation [Table] + References No definition available. + Details
Name: | pseg_AssetRetirementObligationLineItems
Namespace Prefix: | pseg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2175671 + Details
Name: | us-gaap_AssetRetirementObligationDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=pseg_PSEGPowerLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pseg_PublicServiceElectricandGasCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |