Wednesday, September 19, 2007

Renewable energy may account for 30% of energy supply

Updated: 2007-09-19 09:53

Renewable energy could contribute to 30 percent of China's total energy supply by 2050, an energy expert estimated on Tuesday.

Chinese wind power stations may have the ability to generate 300 to 500 million kw of electricity in 2050 and another 200 million to 300 million kw will be generated by solar energy, Shi Dinghuan, president of the Chinese Renewable Energy Society, said at the Solar World Congress 2007 in Beijing.

Small hydropower stations could generate 100 million kilowatts of electric power by 2030 which would account for 10 percent of overall energy supply at that time, said Shi.

Shi said China had to pay more attention to developing renewable energy in order to ease the conflict between economic development and environmental protection.

It is the first time the International Solar Energy Society's Solar World Congress has been held in China since it was initiated more than two decades ago.

First 'Solar' Primary School in E. China

China's first solar-powered primary school was formally inaugurated on Monday in the city of Qingdao, east China's Shandong Province.

Peninsula Metropolitan News reported on Tuesday that the Hushanlu primary school, integrated with solar energy heat and photovoltaic generating systems, can generate electricity to support its water supply and heating system.

With a combined generating capacity of 30 kilowatts, the photovoltaic generating system can produce150 kilowatt-hours of electricity everyday.

Meanwhile, the heat utilization system, which is able to collect sunlight in an area of 600 square meters, can convert solar energy for heating and boiling water for 30 classrooms, 860 students and teachers.

The system, which costs about 3 million yuan, also less than one ninth of the total investment in building the primary school, can work even on a cloudy or rainy day because its stored electricity can support the normal need of the school for five days. There are also more than 100 solar-powered lights on campus.

Staff members of the school were quoted by the newspaper as saying that by using solar energy, the school will be able to save about 65 million kilowatt-hours of electricity and over 261tons of coal, reducing at the same time some 695 tons of carbon dioxide, 4.6 tons of sulfur dioxide, and 4.9 tons of industrial waste emissions, as well as decreasing atmospheric pollutants by 4 tons every year.

The authority of the school believes that their experiment will better help their students learn how important renewable energy resources will be in their daily life and studies.