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REGULATORY MATTERS (Tables) | 12 Months Ended
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Dec. 31, 2022
Regulated Operations [Abstract] |
Schedule of Distribution Rate Orders | The following table summarizes the key terms of base distribution rate orders in effect for the Utilities as of December 31, 2022:
Company |  | Rates Effective For Customers |  | Allowed Debt/Equity |  | Allowed ROE
CEI |  | May 2009 |  | 51% /49% |  | 10.5%
ME(1) |  | January 2017 |  | 48.8% / 51.2% |  | Settled(2)
MP |  | February 2015 |  | 54% / 46% |  | Settled(2)
JCP&L |  | November 2021(3) |  | 48.6% / 51.4% |  | 9.6%
OE |  | January 2009 |  | 51% /49% |  | 10.5%
PE (West Virginia) |  | February 2015 |  | 54% / 46% |  | Settled(2)
PE (Maryland) |  | March 2019 |  | 47% / 53% |  | 9.65%
PN(1) |  | January 2017 |  | 47.4% /52.6% |  | Settled(2)
Penn(1) |  | January 2017 |  | 49.9% / 50.1% |  | Settled(2)
TE |  | January 2009 |  | 51% / 49% |  | 10.5%
WP(1) |  | January 2017 |  | 49.7% / 50.3% |  | Settled(2)
(1) Reflects filed debt/equity as final settlement/orders do not specifically include capital structure. (2) Commission-approved settlement agreements did not disclose ROE rates. (3) Rates were effective for customers on November 1, 2021, but beginning January 1, 2021, JCP&L offset the impact to customers' bills by amortizing an $86 million regulatory liability. The following table summarizes the key terms of rate orders in effect for transmission customer billings for FirstEnergy's transmission owner entities as of December 31, 2022:
Company |  | Rates Effective |  | Capital Structure |  | Allowed ROE
ATSI |  | January 1, 2015 |  | Actual (13-month average) |  | 10.38%
JCP&L |  | January 1, 2020 |  | Actual (13-month average) |  | 10.20%
MP |  | January 1, 2021(1) |  | Actual (13-month average)(1) |  | 11.35%(1)
PE |  | January 1, 2021(1) |  | Actual (13-month average)(1) |  | 11.35%(1)
WP |  | January 1, 2021(1) |  | Actual (13-month average)(1) |  | 11.35%(1)
MAIT |  | July 1, 2017 |  | Lower of Actual (13-month average) or 60% |  | 10.3%
TrAIL |  | July 1, 2008 |  | Actual (year-end) |  | 12.7%(TrAIL the Line & Black Oak SVC) 11.7% (All other projects)
(1) Effective on January 1, 2021, MP, PE, and WP have implemented a forward-looking formula rate, which has been accepted by FERC, subject to refund, pending further hearing and settlement procedures. On January 18, 2023, MP, PE, and WP submitted an uncontested settlement to FERC, which is subject to FERC approval, which includes an allowed ROE of 10.45% and a capital structure of the lower of actual (13-month average) or 56%.

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- Definition Tabular disclosure of regulation for public utility entities, including, but not limited to, rate requests, decommissioning costs and the amount of allowance for earnings on equity capitalized for rate making purposes. + References No definition available. + Details
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