Scale buildup in the generator cooling systems at the two powerhouses in the Agus 6/7 Hydroelectric Plant Complex forced personnel with plant owner National Power Corporation (NPC) of the Philippines to remove one set of coolers from service for cleaning during every planned maintenance shutdown. Looking for a more cost-effective solution to the problem, NPC chose to install the Scalewatcher computerized electronic water conditioner system from Scalewatcher North America on all five units at the two plants. The Scalewatcher water conditioner has increased the generators' cooling efficiency and rated capacity, providing revenue of more than $350,000 a year as a result of the improved efficiency.