United States Fuel Administration

To conserve energy, it introduced daylight saving time, shortened work weeks for civilian goods factories, and encouraged Heatless Mondays.

Even prior to a declaration of war by the United States, shortages of coal were experienced in the winter of 1916-17.

[2] The administration had broad powers to set the price of coal at various points (mine, dock) and the cost of transportation (by rail), and in regard to end use (home, factory, or business, etc.).

[3] Daylight Saving Time was formally adopted in the United States in 1918 by the Fuel Administration.

The idea was unpopular, however, and Congress abolished DST after the war, overriding President Woodrow Wilson's veto.