Minnesota Energy Past, Present, and Future:. 00:48- Centerpoint Energy. 19:14- Minnesota Energy Resources. 30:10- Xcel Energy. 52:29- OtterTail Power Company. 1:00:16 - Minnesota Power. 1:19:08 - Minnesota Rural Electric Association. 1:28:00 - Minnesota Municipal Utilities Association. 1:38:48 - Great River Energy. Runs1 hour, 50 minutes.