Share-Based Compensation

12 Months Ended

Dec. 31, 2012

Share-Based Compensation Disclosure [Abstract]

Share-Based Compensation

14.       Share-Based Compensation - MGE Energy and MGE.

Under MGE Energy's Performance Unit Plan, eligible participants may receive performance units that entitle the holder to receive a cash payment equal to the value of a designated number of shares of MGE Energy's common stock, plus dividend equivalent payments thereon, at the end of the set performance period. In accordance with the plan's provisions, these awards are subject to a prescribed vesting schedule and must be settled in cash. Accordingly, no shares of common stock will be issued in connection with the plan.

On the grant date, MGE Energy and MGE measure the cost of the employee services received in exchange for a performance unit award based on the current market value of MGE Energy common stock. The fair value of the awards is re-measured quarterly, including at December 31, 2012, as required by applicable accounting standards. Changes in fair value as well as the original grant are recognized as compensation cost. Since this amount is re-measured throughout the vesting period, the compensation cost is subject to variability. These units are subject to a five year graded vesting schedule.

	MGE Energy
Grant Date	Units Granted
January 16, 2009	18,604
January 15, 2010	17,310
January 21, 2011	15,655
February 17, 2012	16,693
February 15, 2013	15,256

For nonretirement eligible employees, stock based compensation costs are accrued and recognized using the graded vesting method. Compensation cost for retirement eligible employees or employees that will become retirement eligible during the vesting schedule are recognized on an abridged horizon.

In April 2011, the MGE Energy Board approved an amendment to the outstanding awards under the Performance Unit Plan to provide for the continued vesting of those awards in the event of a bona fide retirement, provided the retired individual does not provide services to a competitor. The amendment did not change the number of performance units covered by any outstanding awardsthen held by any of the participants.

As a result of the changes made by the amendment, MGE accelerated the recognition of costs associated with the outstanding awards resulting in a compensation-related charge of $0.5 million in the second quarter of 2011.

During both the years ended December 31, 2012 and 2011, MGE recorded $1.4 million in compensation expense as a result of awards under the Performance Unit Plan. Compensation expense during theyear ended December 31, 2010 was $1.2 million. In January 2012, cash payments of $0.6 million were distributed relating to awards that were granted in 2007 and became payable under the Performance Unit Plan. No forfeitures occurred during theyears ended December 31, 2012,2011, and 2010.At December 31, 2012, $4.0 million of outstanding awards are vested, of this amount no cash settlements have occurred.