An elementary school in Chiayi County is going into the green energy business after an alumnus in the high-tech field donated a solar power plant to help the school generate a sustainable income stream in the future. The solar power system, which is expected to produce some 100,000 kilowatt-hours (kWh) of electricity per year and earn the school an estimated NT$500,000 annually, was unveiled in a ceremony at Yiren Elementary School in the southern county Friday. Paul Cheng, chief executive of Sun Edge Technology Co., said he initiated the NT$18 million project at his former school about six months ago to promote the concept of energy conservation and carbon emissions reduction. The solar energy generating system installed at the school consists of 337 high efficiency solar modules and 15 inverters and has a total power capacity of 74.4 KWp, according to Cheng. The system is expected to generate 300-400 kWh per day, enough to power 10-20 households, and will help reduce carbon dioxide emissions by approximately 70 metric tons per year, Cheng said. After receiving the system, the school was to hold its first night sports meet Friday to celebrate its 59th anniversary. The school also has plans to use energy efficient lighting equipment and adopt other energy conservation measures. 