Washington metro due to leakage and water intrusion. Power stations often suffer blackouts and outages. Water corrosion of equipment and materials costs millions of dollars a year. EPT system was installed in 2003. Leakage and water intrusion disappeared, the subway station became dry, and the problem of power outages and shutdowns caused by leakage and water intrusion was completely solved. He was a finalist for the 2004 and 2005 Pankow Awards for technological innovation.