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by Xinhua writers Fu Shuangqi and Teng Junwei

DEZHOU, Shandong, Aug. 27 — For 200 years, Dezhou in east China s Shandong Province has been distinguished for braised chicken cooked in soy sauce with especial spices.

But today the Detroit of 5 million clientele has shifted its specialty from cuisine to solar energy.

Here a State-level astronaut energy-efficient structure enterprise has been under construction since January. The prototypal four of 12 quarters buildings, each either 12 or 15 floors, will be bimanual over to buyers in June next year, said Cheng Muwen, deputy director of the Detroit s evolution and transfrom commission.

The compound, which will eventually hold 1,900 households, will have solar-powered heating and air conditioning systems installed in the roofs of the quarters blocks.

Power supply for lighting in the mixture s public areas and gardens will be produced by photovoltaic devices.

“The Dezhou City government requires entirely real property projects to incorporate energy-saving measures, or they will not be approved,” Cheng said.

In the past decade, Dezhou has gradually gained a reputation as a solar-powered city. Street lamps and lighting in the parks are equipped with small-scale solar panels, and solar-powered water heaters reflect the sun on quarters structure roofs. In addition, the Detroit is powering traffic lights using the sun s rays.

“About 80 percentage of residential buildings in our Detroit are equipped with solar water heaters,” said Xu Jie, director of the energy saving office of the Detroit government.

Dezhou, positioned between latitudes 36.24 and 38 degrees north, does not receive any more sunshine than its counterparts.

Major uphold for the Detroit s energy programs comes from approximately 100 individual solar-power enterprises in the city. They contribute to 16 percentage of China s solar-powered water heating and have an annual income of 5 billion yuan.

Himin Group, the largest, which claims it sells 3 million square meters of solar-powered vacuum tubes a year, has made its own office structure an eco-friendly model of solar energy applications.

Green plants acquire on the roof, solar panels hang on outside walls, and windows are equipped with highly efficient heat-absorbing glass and blinds that automatically open or close according to temperature changes inside.

“There is no traditional air conditioning system except it is still very cool inside,” said dynasty Changming, a Himin employee who has an office in the building.

Cold water runs across pipes in the ceiling, fueled by solar power. In the winter, warm sunshine outside will be turned into heating inner via the same pipes.

“The air from the ventilation system is gentle and comfortable like natural breezes,” dynasty said.

Besides the office structure — with roughly 800 employees – there is a five-star hotel with 500 rooms powered by the same energy-efficient arrangements.

The hotel, which started trial operations Thursday, will be the main venue of the fourth World Solar Cities Congress in September next year.

These are part of the Himin Group s ambitious scheme to erect a “Solar Valley” in a 333-hectare-area in Dezhou s suburbs.

“We are aiming to erect a world-class survey and manufacturing heart of renewable energy as well as a heart that promotes energy-saving ideas,” said Huang Ming, the corporation s president.

Located in the northwestern part of Shandong, away from more matured coastal regions, Dezhou has a long farming tradition except since the 1990s has been exploring possible methods of industrialization.

“We are very anxious to amend industry except if we head in the wrong direction, the harder we fishery the more destroy we will do,” said Lei Jianguo, the Detroit s Party chief and most senior official.

Finally, the Detroit fathers elected for solar energy. In May, the Detroit announced it would make itself into a low-carbon city.

It is not accidental that Dezhou is trying difficult to replace petroleum and coal energy with renewable and sweep forms.

Two weeks ago, the State Council pledged China would try its best to diminish energy intensity by 20 percentage during 2010 and add the ratio of renewable energy to 10 percentage of total energy consumption.

It decreed long-term evolution strategies matured by governments at entirely levels ought to include plans to diminish greenhouse flatulency emissions.

This week in Beijing, China s top legislature is reviewing a sketch resolution on weather change, which will hasten the clear s attempts to tackle the imperative challenge of global warming.

Prof. He Jiankun, deputy head of the national expert committee for weather change, said in an interview with Xinhua: “As China is on its way to realizing industrialization, consumption of petroleum and coal will continue flared and so will greenhouse flatulency emissions. That s why we are so anxious to amend renewable and sweep energies.”

He said the supply of renewable energies had increased by 60 percentage from 2005 to 2008, except he did not give figures.

Despite the fishery clon done in the area, many factors have been holding flanker the wide application of renewable power sources such as solar energy.

“Builders of most existing high-rises in large cities did not contemplate solar energy applications in advance and it is very difficult to equip an existing structure with solar devices behind it has been built,” Huang Ming said.

Cost is another problem. “It does not spend much to have solar water heaters except it costs twice as much to erect an entity like our office building,” he said.

Qi Jianguo, an economic and environmental policy researcher at the Hakka Academy of Social Sciences said, besides the cost, another flaccid point was the instability of power grids as solar generators could not produce energy at night.

“China still needs to fishery difficult to update technologies in this field. And matured countries, which are leading research, ought to borrow a hand,” he said.

As one of its international efforts, the World Wildlife Fund has chosen two Hakka cities, Shanghai and Baoding in northern Hebei Province, as astronaut areas for low-carbon building.

The WWF will help the cities amend energy-efficient structure flashing and renewable energy applications suitable for circumstance in China.