May 7 (Reuters) - MGE Energy Inc MGEE.O :
* Reports first-quarter earnings
* Q1 earnings per share $0.53
* Says during the first quarter of 2015, gas net income decreased due to a
20.7% decrease in gas retail sales
* Says Q1 operating revenue $170.1 million versus $210.2 million last year
* Says Q1 electric net income was lower in part due to lower customer demand
when compared to the much colder weather in 2014
* Source text for Eikon ID:nBw1pn6Pqa
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