Energy Price Discipline Act of 2005

Energy Price Discipline Act of 2005 - Declares it is unlawful for any entity engaged in the petroleum or gasoline business to sell crude oil, gasoline, diesel fuel, natural gas, or petroleum distillates at an unjust or unreasonable price.

Directs the Federal Trade Commission (FTC) to promulgate rules to enforce this Act, and to establish what constitutes an unjust or unreasonable price, taking the following factors into consideration: (1) the relation of the price to the prevailing price of that commodity in the market in the same geographic region during the previous 12-month period; (2) shipping, manufacturing, or other costs to the entity; (3) whether there has been a national or regional disruption in the supply of the commodity; and (4) whether there is any indication of the entity taking unfair advantage of any circumstances.

Prescribes FTC enforcement guidelines, including civil and criminal penalties.