Can someone please help me with these three energy economic questions?

1.If the maximum price to be charged for electricity is fixed, say, by regulation, then how does a utility increase its profits? Where has this been shown to be a bad thing?!

2.What are the five general risks associated with all businesses? Of these, which ones can we address with energy trading schemes?

3.You want to build a natural gas fired power plant. How would you structure commodities trades in order to lock in your profit?