A power generation system for 50kW electrical output (a solar panel: amorphous silicon tandem solar cells) had been in operation since February in 2011 on the roof of the second rest house completed in December, 2010. The system was introduced for the purpose of promoting energy saving awareness and applying the technology to shipboard use. The real time status of power generation appears in the displays at the entrance of the second rest house and by the elevator at the entrance of the main building.