Anybody with even a cursory knowledge of energy markets can guess the biggest energy bankruptcy in history: That would be Enron, the former "energy trading" firm that used accounting fraud to achieve high share prices, media accolades, and small fortunes for a few key executives.

File photo: Laid-off Enron employees outside Enron headquarters as the company collapsed in 2001

But even aside from Enron, the energy industry has had several bankruptcies that ran into the billions of dollars. A report in Oilprice.com compiles the 10 biggest energy company bankruptcies of all time, ranked by total assets.