MGE Energy(MGEE) - 2019 Q1 - Quarterly Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] Quarterly Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 For the quarterly period ended: March 31, 2019 [ ] Transition Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 For the transition period from _______________ to _______________. | Commission | Name of Registrant, State of Incorporation, Address | IRS Employer | | --- | --- | --- | | File No. | of Principal E ...