A loss of economic efficiency from price regulation is least likely to result from a:

If the quantity supplied at a given price is greater than the quantity demanded, then that price is greater than the equilibrium price. A price ceiling on electricity set above the equilibrium price will have no effect because the quantity supplied equals the quantity demanded at a price less than this legal maximum. A minimum wage causes a loss of efficiency (quantity of labor supplied is greater than the quantity demanded) when it is set above the equilibrium wage for unskilled workers. Increased search time is an example of an inefficiency that results from a rent ceiling below the equilibrium rent level.