MGE Energy Q1 EPS rises to 59c, up 4.6% YoY, driven by cold weather.

• MGE Energy reports Q1 2007 earnings of $12.3 million, up from $11.5 million in Q1 2006. • Cold weather drives 18.9% increase in retail gas deliveries. • Gas revenues increase by $14 million. • Retail gas rates decrease by 9.6%. • Digital data not explicitly mentioned in the article.