FRIENDS OF THE EARTH, HONG KONG

WIND RESOURCE STUDY

LOCATION

Lamma Island, Hong Kong. Lamma Island is located off the southern coast of Hong Kong Island.

THE SYSTEM

The system is required to provide 12 hours of sustainable 24V DC power to a set of aviation obstruction lights on an NRG 30-meter wind monitoring mast. It was powered by four 120 Wp solar panels and a 12-day battery bank.

Hong Kong Electric paid for the system as part of their effort to determine if a wind farm would be feasible on the outlying islands of Hong Kong.

INSTALLATION

The project design was carried out by SPC and the installation was handled by Friends of the Earth. Ease of installation was important as the equipment was to be helicoptered and assembled on site.

RELIABILITY

High quality system components had been selected to ensure 99.9% reliability as requested by FOE and Hong Kong Electric.

MAINTENANCE

The system was designed for minimal maintenance. The only maintenance required is to ensure that the vegativity growth does not shade the panels.

 EQUIPMENT SPECIFICATIONS

• 2 x aviation twin head obstruction lights
• 4 x 120 Wp solar panels
• 12 x 2V 650Ah (C10) lead acid batteries
• 1 x 20A solar charge controller
• 1 x light sentry daylight switch
• 1 x solar frame, battery box, and control box