We propose a "zero energy" ground snow melting tank using a steel pile. A theoretical analysis predicts that the use of a steel pile of 2000 mmφ would result in the snow melting of 174 m^3 during a winter season. Field experiments are conducted with two steel piles of different diameters, 600mmφ and 800mmφ. It spends 11 days and 18 days to melt the whole snow filled in the piles respectively. The measurements also indicate the average snow melting rate per the length of 23 W/m and 34 W/m for the steel piles of 600mmφ and 800mmφ.
