March 10th, 2017, 6:54 pm
This is a pretty broad question. There are several types of markets - forward, virtual, FTR, etc. as well as several different ISOs that have their own rules for trading. Each ISO has a manual that details the trading rules for their markets. This is probably a pretty good place to start. In addition, Eydeland and Wolyniek have a book that is primarily a risk management book but is a good market primer. Vince Kaminski has several excellent books on the electricity market as well.
I can't really give much more help until you are more specific.
Beachcomber