Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Share Based Compensation Tables [Abstract]

Share Based Compensation Units Granted

	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