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Pay vs Performance Disclosure | 12 Months Ended | 25 Months Ended | 47 Months Ended
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Dec. 31, 2025 USD ($) $ / shares | Dec. 31, 2024 USD ($) $ / shares | Dec. 31, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Jan. 31, 2022 | Dec. 31, 2025
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure, Table |  |
Year | (1) Summary Compensation Table (SCT) Total for PEO ($) | (1,2) Compensation Actually Paid (CAP) to PEO ($) | (3) Average SCT total for non-PEO NEOs ($) | (2,3) Average Compensation Actually Paid to non-PEO NEOs ($) | Value of Initial Fixed $100 investment based on: ($) | Net Income ($) (in millions) | Company Selected Measure
Lauber | Fletcher | Lauber | Fletcher | (4) WEC TSR | (5) Peer Group TSR | (6)Adjusted Earnings Per Share (diluted) ($)
2025 | 12,188,492 | — | 20,871,095 | — | 3,638,242 | 5,628,666 | 135.40 | 149.01 | 1,557.5 | 5.27
2024 | 10,948,091 | — | 16,220,714 | — | 4,739,937 | 4,816,652 | 116.75 | 129.21 | 1,527.2 | 4.88
2023 | 9,552,179 | — | 5,707,745 | — | 5,188,505 | 2,920,498 | 100.55 | 110.92 | 1,331.7 | 4.63
2022 | 8,149,461 | 8,151,511 | 9,721,228 | 17,332,947 | 4,358,213 | 5,256,205 | 108.11 | 119.69 | 1,408.1 | 4.45
2021 | — | 18,481,871 | — | 14,249,651 | 4,911,241 | 4,273,523 | 108.64 | 117.10 | 1,300.3 | 4.11
Company Selected Measure Name |  | Adjusted Earnings Per Share (diluted) |  |  |  |  |  |  |  |  |  |
Named Executive Officers, Footnote |  | On February 1, 2022, Mr. Lauber succeeded Kevin Fletcher as CEO.The non-PEO NEOs for each of the years shown were as follows: •2025: Messrs. Hooper and Garvin, and Mmes. Liu and Kelsey •2024: Messrs. Klappa, Hooper, and Garvin, and Mmes. Liu and Kelsey •2022 and 2023: Messrs. Klappa and Garvin, and Mmes. Liu and Kelsey •2021: Messrs. Klappa and Lauber, and Mmes. Liu and Kelsey |  |  |  |  |  |  |  |  |  |
Peer Group Issuers, Footnote |  | Represents the Total Shareholder Return ("TSR") of the Custom Peer Index Group, weighted according to the respective companies' stock market capitalization at the beginning of each period for which a return is indicated. For information about the Custom Peer Index Group see "Performance Graph" in the Company's 2025 Annual Report. |  |  |  |  |  |  |  |  |  |
Adjustment To PEO Compensation, Footnote |  | Represents the CAP to each of Messrs. Lauber and Fletcher, and the average CAP to the non-PEO NEOs as a group, each as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual amount of compensation earned or paid during the applicable fiscal years. To calculate the CAP to Mr. Lauber, and the average CAP to our non-PEO NEOs for the 2025 fiscal year, the following adjustments were made to the SCT total compensation: SCT to CAP Reconciliation
Year | SCT Total ($) | Deductions from SCT Total | Additions to SCT Total | CAP ($)
Change in Pension Value ($) | (a) Equity-based awards Grant Date Fair Value ($) | (b) Pension Benefit Service Costs ($) | (c)(i) Change in Value of Covered Fiscal Year Awards Unvested at Covered Fiscal Year-End ($) | (c)(ii) Change in Value of Prior Years' Awards Unvested at Fiscal Year-End ($) | (c)(iii) Value of Awards Granted and Vested in Covered Fiscal Year ($) | (c)(iv) Change in Value of Prior Years' Awards that Vested in Fiscal Year ($)
Lauber SCT to CAP Reconciliation
2025 | 12,188,492 | 377,329 | 6,396,083 | 65,590 | 10,372,295 | 3,159,042 | — | 1,859,088 | 20,871,095
Average Non-PEO NEOs SCT to CAP Reconciliation
2025 | 3,638,242 | 37,834 | 1,383,764 | 18,373 | 2,244,015 | 755,624 | — | 394,010 | 5,628,666
(a) Represents the grant date fair value of equity awards as reflected in the "Stock Awards" and "Option Awards" columns of the SCT. (b) Represents the actuarially determined value of the pension benefit accrual for services rendered by each NEO during the applicable year. There were no costs of benefits granted pursuant to a plan amendment during any covered fiscal year that were attributed by the plan's benefit formula to services rendered in periods prior to the plan amendment. (c) Represents (i) the covered fiscal year-end value of any equity awards granted in the covered fiscal year that were outstanding and unvested as of the end of such year; (ii) the amount of the change as of the covered fiscal year-end (from the end of the prior fiscal year) in fair value of any awards granted in prior years that were outstanding and unvested as of the end of the covered fiscal year; (iii) the fair value as of the vesting date of awards granted in a covered fiscal year that vested in the same covered fiscal year; and (iv) the amount equal to the change as of the vesting date (from the end of the prior fiscal year) in fair value for awards granted in prior years that vested during the covered fiscal year. The valuation assumptions used to calculate fair values did not materially differ from those disclosed at the time of grant. |  |  |  |  |  |  |  |  |  |
Non-PEO NEO Average Total Compensation Amount | [1] | $ 3,638,242 | $ 4,739,937 |  | $ 5,188,505 |  | $ 4,358,213 |  | $ 4,911,241 |  |  |
Non-PEO NEO Average Compensation Actually Paid Amount | [1],[2] | $ 5,628,666 | 4,816,652 |  | 2,920,498 |  | 5,256,205 |  | 4,273,523 |  |  |
Adjustment to Non-PEO NEO Compensation Footnote |  | Represents the CAP to each of Messrs. Lauber and Fletcher, and the average CAP to the non-PEO NEOs as a group, each as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual amount of compensation earned or paid during the applicable fiscal years. To calculate the CAP to Mr. Lauber, and the average CAP to our non-PEO NEOs for the 2025 fiscal year, the following adjustments were made to the SCT total compensation: SCT to CAP Reconciliation
Year | SCT Total ($) | Deductions from SCT Total | Additions to SCT Total | CAP ($)
Change in Pension Value ($) | (a) Equity-based awards Grant Date Fair Value ($) | (b) Pension Benefit Service Costs ($) | (c)(i) Change in Value of Covered Fiscal Year Awards Unvested at Covered Fiscal Year-End ($) | (c)(ii) Change in Value of Prior Years' Awards Unvested at Fiscal Year-End ($) | (c)(iii) Value of Awards Granted and Vested in Covered Fiscal Year ($) | (c)(iv) Change in Value of Prior Years' Awards that Vested in Fiscal Year ($)
Lauber SCT to CAP Reconciliation
2025 | 12,188,492 | 377,329 | 6,396,083 | 65,590 | 10,372,295 | 3,159,042 | — | 1,859,088 | 20,871,095
Average Non-PEO NEOs SCT to CAP Reconciliation
2025 | 3,638,242 | 37,834 | 1,383,764 | 18,373 | 2,244,015 | 755,624 | — | 394,010 | 5,628,666
(a) Represents the grant date fair value of equity awards as reflected in the "Stock Awards" and "Option Awards" columns of the SCT. (b) Represents the actuarially determined value of the pension benefit accrual for services rendered by each NEO during the applicable year. There were no costs of benefits granted pursuant to a plan amendment during any covered fiscal year that were attributed by the plan's benefit formula to services rendered in periods prior to the plan amendment. (c) Represents (i) the covered fiscal year-end value of any equity awards granted in the covered fiscal year that were outstanding and unvested as of the end of such year; (ii) the amount of the change as of the covered fiscal year-end (from the end of the prior fiscal year) in fair value of any awards granted in prior years that were outstanding and unvested as of the end of the covered fiscal year; (iii) the fair value as of the vesting date of awards granted in a covered fiscal year that vested in the same covered fiscal year; and (iv) the amount equal to the change as of the vesting date (from the end of the prior fiscal year) in fair value for awards granted in prior years that vested during the covered fiscal year. The valuation assumptions used to calculate fair values did not materially differ from those disclosed at the time of grant. |  |  |  |  |  |  |  |  |  |
Compensation Actually Paid vs. Total Shareholder Return |  | CAP v. TSR As demonstrated in the following graph, the amount of compensation paid to the PEOs and the average compensation paid to the other NEOs was aligned with the Company’s TSR performance. A substantial portion of the compensation awarded to each of the NEOs is long-term incentive compensation. For the NEOs, performance unit awards comprise 65% of the long-term incentive compensation granted each year, with the Company’s TSR performance against its peer group as a significant component of the performance unit awards. As discussed further in “Compensation Discussion and Analysis,” the performance units granted in 2023, which vested at the end of the three-year performance period ended December 31, 2025, provided a payout above target. See the Five-Year Cumulative Return and Total Stockholder Returns graphs in “Compensation Discussion and Analysis – Executive Summary” for information on the Company’s performance over the 5-year period ended December 31, 2025, which was in line with the performance of its peer group, and 10-year period ended December 31, 2025, which was at the top of the range of the comparative benchmarks, respectively. |  |  |  |  |  |  |  |  |  |
Compensation Actually Paid vs. Net Income |  | CAP v. WEC Net Income and Adjusted Earnings Per Share (Company-Selected Measure) As demonstrated by the following graphs, during the cumulative five-year period ended December 31, 2025, the compensation paid to the PEOs and the average compensation paid to the other NEOs was aligned with the Company’s net income and EPS performance. In 2025, 2024, and 2023, WEC Energy Group's EPS performance is shown on an adjusted (non-GAAP) basis. Pursuant to the terms of the Company’s short-term performance plan, in 2025, almost 75% of the payout was based upon the Company’s adjusted EPS performance, and almost 25% was based upon the Company’s performance against cash flow goals. See "Compensation Discussion and Analysis" for information on how the EPS and cash flow targets were established for 2025. The Company’s strong performance against the EPS and cash flow goals in 2025 resulted in maximum level payouts for each measure. WEC Energy Group’s earnings per share on a GAAP basis were $4.81 for 2025, which includes a $0.46 per share charge to earnings, reflecting an agreement on the terms of a proposed settlement PGL and NSG reached with the Illinois Attorney General that, if approved by the ICC, would resolve all open proceedings related to the QIP rider and the UEA rider. Excluding this charge, WEC Energy Group’s adjusted earnings per share were $5.27. This proposed settlement and corresponding charge to earnings is not indicative of WEC Energy Group’s operating performance during 2025. As a result, the Compensation Committee determined that the Company’s performance against the earnings per share targets should be measured using adjusted earnings per share. WEC Energy Group’s earnings per share on a GAAP basis were $4.83 for 2024, which includes a $0.06 per share charge to earnings related to certain capital expenditures under the QIP rider that were disallowed by the ICC as part of PGL's 2016 QIP reconciliation proceeding. Excluding this charge, WEC Energy Group’s adjusted earnings per share were $4.88. PGL has appealed this decision. The ICC’s disallowance of these expenditures is not indicative of WEC Energy Group’s operating performance in 2024. As a result, the Compensation Committee determined that the Company’s performance against the earnings per share targets should be measured using adjusted earnings per share. With respect to the earnings per share calculation, note that WEC Energy Group’s adjusted earnings per share does not add due to rounding. WEC Energy Group’s earnings per share on a GAAP basis were $4.22 for 2023, which includes a $0.41 per share non-cash charge to earnings related to the ICC's disallowance of an aggregate of $178.9 million of previously incurred capital costs as part of its decisions in the rate cases of the Company’s Illinois utilities. Excluding this charge, WEC Energy Group’s 2023 adjusted earnings per share were $4.63. The ICC’s disallowance of previously incurred capital costs of this nature is not indicative of WEC Energy Group’s operating performance in 2023. As a result, the Compensation Committee determined that the Company’s performance against the earnings per share targets should be measured using adjusted earnings per share. See Appendix A for earnings per share presented on an adjusted basis (non-GAAP) along with a reconciliation to earnings per share, presented on a GAAP basis, for 2025, 2024, and 2023. In the graph below, net income is presented on a GAAP basis. EPS is presented on an adjusted (non-GAAP) basis for 2025, 2024, and 2023 and on a GAAP basis for years prior to 2023. |  |  |  |  |  |  |  |  |  |
Compensation Actually Paid vs. Company Selected Measure |  | CAP v. WEC Net Income and Adjusted Earnings Per Share (Company-Selected Measure) As demonstrated by the following graphs, during the cumulative five-year period ended December 31, 2025, the compensation paid to the PEOs and the average compensation paid to the other NEOs was aligned with the Company’s net income and EPS performance. In 2025, 2024, and 2023, WEC Energy Group's EPS performance is shown on an adjusted (non-GAAP) basis. Pursuant to the terms of the Company’s short-term performance plan, in 2025, almost 75% of the payout was based upon the Company’s adjusted EPS performance, and almost 25% was based upon the Company’s performance against cash flow goals. See "Compensation Discussion and Analysis" for information on how the EPS and cash flow targets were established for 2025. The Company’s strong performance against the EPS and cash flow goals in 2025 resulted in maximum level payouts for each measure. WEC Energy Group’s earnings per share on a GAAP basis were $4.81 for 2025, which includes a $0.46 per share charge to earnings, reflecting an agreement on the terms of a proposed settlement PGL and NSG reached with the Illinois Attorney General that, if approved by the ICC, would resolve all open proceedings related to the QIP rider and the UEA rider. Excluding this charge, WEC Energy Group’s adjusted earnings per share were $5.27. This proposed settlement and corresponding charge to earnings is not indicative of WEC Energy Group’s operating performance during 2025. As a result, the Compensation Committee determined that the Company’s performance against the earnings per share targets should be measured using adjusted earnings per share. WEC Energy Group’s earnings per share on a GAAP basis were $4.83 for 2024, which includes a $0.06 per share charge to earnings related to certain capital expenditures under the QIP rider that were disallowed by the ICC as part of PGL's 2016 QIP reconciliation proceeding. Excluding this charge, WEC Energy Group’s adjusted earnings per share were $4.88. PGL has appealed this decision. The ICC’s disallowance of these expenditures is not indicative of WEC Energy Group’s operating performance in 2024. As a result, the Compensation Committee determined that the Company’s performance against the earnings per share targets should be measured using adjusted earnings per share. With respect to the earnings per share calculation, note that WEC Energy Group’s adjusted earnings per share does not add due to rounding. WEC Energy Group’s earnings per share on a GAAP basis were $4.22 for 2023, which includes a $0.41 per share non-cash charge to earnings related to the ICC's disallowance of an aggregate of $178.9 million of previously incurred capital costs as part of its decisions in the rate cases of the Company’s Illinois utilities. Excluding this charge, WEC Energy Group’s 2023 adjusted earnings per share were $4.63. The ICC’s disallowance of previously incurred capital costs of this nature is not indicative of WEC Energy Group’s operating performance in 2023. As a result, the Compensation Committee determined that the Company’s performance against the earnings per share targets should be measured using adjusted earnings per share. See Appendix A for earnings per share presented on an adjusted basis (non-GAAP) along with a reconciliation to earnings per share, presented on a GAAP basis, for 2025, 2024, and 2023. In the graph below, net income is presented on a GAAP basis. EPS is presented on an adjusted (non-GAAP) basis for 2025, 2024, and 2023 and on a GAAP basis for years prior to 2023 * Earnings per share for 2021 and 2022 are presented on a GAAP basis. |  |  |  |  |  |  |  |  |  |
Tabular List, Table |  | Most Important Performance Measures The following represents the most important financial performance measures used by WEC Energy Group to link compensation actually paid to each NEO for 2025, the most recently completed fiscal year, to company performance:
Adjusted Earnings Per Share |  | Net Income |  | Cash Flow |  | Return on Equity
Achievement of the Company’s goals with respect to the financial measures highlighted above should drive strong TSR performance for the Company relative to its peers, which is an important component of our compensation program as more fully described in “Compensation Discussion and Analysis – Long-Term Incentive Compensation". |  |  |  |  |  |  |  |  |  |
Total Shareholder Return Amount | [3] | $ 135.40 | 116.75 |  | 100.55 |  | 108.11 |  | 108.64 |  |  |
Peer Group Total Shareholder Return Amount | [4] | 149.01 | 129.21 |  | 110.92 |  | 119.69 |  | 117.10 |  |  |
Net Income (Loss) Available to Common Stockholders, Basic |  | $ 1,557,500,000 | $ 1,527,200,000 |  | $ 1,331,700,000 |  | $ 1,408,100,000 |  | $ 1,300,300,000 |  |  |
Company Selected Measure Amount | $ / shares | [5] | 5.27 | 4.88 |  | 4.63 |  | 4.45 |  | 4.11 |  |  |
PEO Name |  |  |  |  |  |  |  |  |  |  | Kevin Fletcher | Mr. Lauber
Additional 402(v) Disclosure |  | Assumes an investment of $100 at the beginning of the measurement period and reinvestment of all dividends. The “measurement period” for each covered fiscal year is the period from December 31, 2020 through the end of such covered fiscal year. |  |  |  |  |  |  |  |  |  |
Non-GAAP Earnings Per Share Adjustment | $ / shares |  | $ 0.46 | $ 0.06 |  | $ 0.41 |  |  |  |  |  |  |
Measure:: 1 |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Name |  | Adjusted Earnings Per Share |  |  |  |  |  |  |  |  |  |
Non-GAAP Measure Description |  | For 2025, 2024, and 2023, the Company Selected Measure was adjusted (non-GAAP) earnings per share which excludes (i) for 2025, a $0.46 per share charge in 2025, reflecting an agreement on the terms of a proposed settlement PGL and NSG reached with the Illinois Attorney General that, if approved by the ICC, would resolve all open proceedings related to the QIP and UEA riders, and (ii) for 2024 and 2023, a $0.06 per share charge to earnings and a $0.41 per share non-cash charge to earnings, respectively, each of which related to the ICC's disallowance of certain capital costs. See Appendix A on page P-85 for a full reconciliation of GAAP to non-GAAP earnings per share. The prior years reported in this table each show the Company's earnings per share on a GAAP basis. |  |  |  |  |  |  |  |  |  |
Measure:: 2 |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Name |  | Net Income |  |  |  |  |  |  |  |  |  |
Measure:: 3 |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Name |  | Cash Flow |  |  |  |  |  |  |  |  |  |
Measure:: 4 |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Name |  | Return on Equity |  |  |  |  |  |  |  |  |  |
Lauber [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
PEO Total Compensation Amount |  | $ 12,188,492 | $ 10,948,091 | [6] | $ 9,552,179 | [6] | $ 8,149,461 | [6] | $ 0 | [6] |  |
PEO Actually Paid Compensation Amount | [2],[6] | 20,871,095 | 16,220,714 |  | 5,707,745 |  | 9,721,228 |  | 0 |  |  |
Fletcher [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
PEO Total Compensation Amount | [6] | 0 | 0 |  | 0 |  | 8,151,511 |  | 18,481,871 |  |  |
PEO Actually Paid Compensation Amount | [2],[6] | 0 | $ 0 |  | $ 0 |  | $ 17,332,947 |  | $ 14,249,651 |  |  |
PEO | Lauber [Member] | Change In Pension Value [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | (377,329) |  |  |  |  |  |  |  |  |  |
PEO | Lauber [Member] | Equity Bade Awards Grant Date Fair Value [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | (6,396,083) |  |  |  |  |  |  |  |  |  |
PEO | Lauber [Member] | Pension Benefit Service Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 65,590 |  |  |  |  |  |  |  |  |  |
PEO | Lauber [Member] | Change In Value Of Covered Fiscal Year Unvested [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 10,372,295 |  |  |  |  |  |  |  |  |  |
PEO | Lauber [Member] | Change In Value Of Prior Years Unvested [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 3,159,042 |  |  |  |  |  |  |  |  |  |
PEO | Lauber [Member] | Value Of Awards Granted And Vested In Covered Fiscal Year [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 0 |  |  |  |  |  |  |  |  |  |
PEO | Lauber [Member] | Change In Value Of Prior Years Vested [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 1,859,088 |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Change In Pension Value [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | (37,834) |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Equity Bade Awards Grant Date Fair Value [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | (1,383,764) |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Pension Benefit Service Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 18,373 |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Change In Value Of Covered Fiscal Year Unvested [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 2,244,015 |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Change In Value Of Prior Years Unvested [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 755,624 |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Value Of Awards Granted And Vested In Covered Fiscal Year [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | 0 |  |  |  |  |  |  |  |  |  |
Non-PEO NEO | Change In Value Of Prior Years Vested [Member] |  |  |  |  |  |  |  |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Adjustment to Compensation, Amount |  | $ 394,010 |  |  |  |  |  |  |  |  |  |
[1] | The non-PEO NEOs for each of the years shown were as follows: •2025: Messrs. Hooper and Garvin, and Mmes. Liu and Kelsey •2024: Messrs. Klappa, Hooper, and Garvin, and Mmes. Liu and Kelsey •2022 and 2023: Messrs. Klappa and Garvin, and Mmes. Liu and Kelsey •2021: Messrs. Klappa and Lauber, and Mmes. Liu and Kelsey
[2] | Represents the CAP to each of Messrs. Lauber and Fletcher, and the average CAP to the non-PEO NEOs as a group, each as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts do not reflect the actual amount of compensation earned or paid during the applicable fiscal years. To calculate the CAP to Mr. Lauber, and the average CAP to our non-PEO NEOs for the 2025 fiscal year, the following adjustments were made to the SCT total compensation: SCT to CAP Reconciliation
Year | SCT Total ($) | Deductions from SCT Total | Additions to SCT Total | CAP ($)
Change in Pension Value ($) | (a) Equity-based awards Grant Date Fair Value ($) | (b) Pension Benefit Service Costs ($) | (c)(i) Change in Value of Covered Fiscal Year Awards Unvested at Covered Fiscal Year-End ($) | (c)(ii) Change in Value of Prior Years' Awards Unvested at Fiscal Year-End ($) | (c)(iii) Value of Awards Granted and Vested in Covered Fiscal Year ($) | (c)(iv) Change in Value of Prior Years' Awards that Vested in Fiscal Year ($)
Lauber SCT to CAP Reconciliation
2025 | 12,188,492 | 377,329 | 6,396,083 | 65,590 | 10,372,295 | 3,159,042 | — | 1,859,088 | 20,871,095
Average Non-PEO NEOs SCT to CAP Reconciliation
2025 | 3,638,242 | 37,834 | 1,383,764 | 18,373 | 2,244,015 | 755,624 | — | 394,010 | 5,628,666
(a) Represents the grant date fair value of equity awards as reflected in the "Stock Awards" and "Option Awards" columns of the SCT. (b) Represents the actuarially determined value of the pension benefit accrual for services rendered by each NEO during the applicable year. There were no costs of benefits granted pursuant to a plan amendment during any covered fiscal year that were attributed by the plan's benefit formula to services rendered in periods prior to the plan amendment. (c) Represents (i) the covered fiscal year-end value of any equity awards granted in the covered fiscal year that were outstanding and unvested as of the end of such year; (ii) the amount of the change as of the covered fiscal year-end (from the end of the prior fiscal year) in fair value of any awards granted in prior years that were outstanding and unvested as of the end of the covered fiscal year; (iii) the fair value as of the vesting date of awards granted in a covered fiscal year that vested in the same covered fiscal year; and (iv) the amount equal to the change as of the vesting date (from the end of the prior fiscal year) in fair value for awards granted in prior years that vested during the covered fiscal year. The valuation assumptions used to calculate fair values did not materially differ from those disclosed at the time of grant.
[3] | Assumes an investment of $100 at the beginning of the measurement period and reinvestment of all dividends. The “measurement period” for each covered fiscal year is the period from December 31, 2020 through the end of such covered fiscal year.
[4] | Represents the Total Shareholder Return ("TSR") of the Custom Peer Index Group, weighted according to the respective companies' stock market capitalization at the beginning of each period for which a return is indicated. For information about the Custom Peer Index Group see "Performance Graph" in the Company's 2025 Annual Report.
[5] | For 2025, 2024, and 2023, the Company Selected Measure was adjusted (non-GAAP) earnings per share which excludes (i) for 2025, a $0.46 per share charge in 2025, reflecting an agreement on the terms of a proposed settlement PGL and NSG reached with the Illinois Attorney General that, if approved by the ICC, would resolve all open proceedings related to the QIP and UEA riders, and (ii) for 2024 and 2023, a $0.06 per share charge to earnings and a $0.41 per share non-cash charge to earnings, respectively, each of which related to the ICC's disallowance of certain capital costs. See Appendix A on page P-85 for a full reconciliation of GAAP to non-GAAP earnings per share. The prior years reported in this table each show the Company's earnings per share on a GAAP basis
[6] | On February 1, 2022, Mr. Lauber succeeded Kevin Fletcher as CEO.

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