Requires no electricity. Operates approximately 28 hours on a 100 Lb. tank, or larger. Auto safety shut-off in the event of fuel interruption. Collapsible 2 piece design provides easy storage. Large sturdy base prevents tipping. 10 ft hose and LP regulatorincluded. Built in windshield protects burner flame. 360° heating radius provides a blanket of warmth. Heats up to 4,700 square feet. Ideal for construction sites, road work, manufacturing, loading docks, agricultural areas, large industrial sites,and dry walling. TANK NOT INCLUDED. CSA Approved for outdoor use.