It's helpful to start at the beginning, with the creation of these agencies. The Department of Energy Organization Act of 1977 reorganized a hodge podge of federal energy departments to separate energy policy from energy regulation to prevent too much coziness and to create a national energy program.
The U.S. Department of Energy was established as a cabinet-level department to deal with energy policy. Within the DOE hierarchy, Congress also created an independent energy regulatory Commission known as the Federal Energy Regulatory Commission, or FERC. The DOE organizational chart looks like this.
FERC was given jurisdiction over narrow and specific energy issues. FERC is NOT a national appeals court for state energy decisions you don't like. FERC does NOT have jurisdiction over the actions of DOE, or any other agency over which it is not specifically granted jurisdiction by Congress. Sometimes the DOE can delegate specific authority to independent agencies like FERC, in order to work cooperatively with them to develop rules or policy over which DOE has jurisdiction.
Here's a simple list of what FERC does and what FERC does not. If you think you have an issue that FERC should do something about, please check the list before wasting time and resources filing frivolous complaints or petitions with FERC. If you don't understand this list, or need more information, please ask someone who does know or do some research before running to DC with your pop gun loaded with blanks. Not only do you look silly, but you waste incredible amounts of time and resources and damage your reputation. Federal energy regulation and policy is not a game of flinging poop on the wall to see which pieces stick. Get educated, get your game plan organized, and target your requests with efficiency for best results.
FERC has its own set of rules that apply to matters under FERC's jurisdiction. If your issue isn't within FERC's jurisdiction, FERC's rules don't apply.
Unless operating under the rules of a different agency that has some jurisdiction in one of its actions, the DOE operates under 5 U.S. Code Chapter 5, Subchapter II - ADMINISTRATIVE PROCEDURE.
If you want something, you have to legally support what you're asking for. Remember, only monkeys throw poop.