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September 28, 2009

China's Wind Farms Come With a Catch: Coal Plants

SHANGHAI—China's ambition to create "green cities" powered by huge wind farms comes with a dirty little secret: Dozens of new coal-fired power plants need to be installed as well.

Part of the reason is that wind power depends on, well, the wind. To safeguard against blackouts when conditions are too calm, officials have turned to coal-fired power as a backup.

China wants renewable energy like wind to meet 15% of its energy needs by 2020, double its share in 2005, as it seeks to rein in emissions that have made its cities among the smoggiest on Earth. But experts say the country's transmission network currently can't absorb the rate of growth in renewable-energy output. Last year, as much as 30% of wind-power capacity wasn't connected to the grid. As a result, more coal is being burned in existing plants, and new thermal capacity is being built to cover this shortfall in renewable energy.

In addition, officials want enough new coal-fired capacity in reserve so that they can meet demand whenever the wind doesn't blow. This is important because wind is less reliable as an energy source than coal, which fuels two-thirds of China's electricity output. Wind energy ultimately depends on wind strength and direction, unlike coal, which can be stockpiled at generators in advance. Read more

At the same China expands its renewable energy production, it also pushes further into dirty energy, like coal, the Wall Street Journal says.

The reasons are simple enough. When the sun doesn't shine, or the wind doesn't blow, people still need electricity. There is no source of energy that's as cheap as coal that provides same kind of capacity for generating electricity. Read more

"If the U.S. doesn't get serious, China's going to own this industry," said Applied Materials spokesman David Miller. He points to the Manhattan Project-like push for alternative energy adopted by Chinese officials, which includes up to $60 billion annually in government investment. And here? "Here, we're way behind," said Miller. "We're still messing around with energy bills. We need to get serious, to get capital spending flowing, to get the government truly behind it, to get focused."

Miller and his company are not simply blowing smoke. In as little as two years, analysts predict, China will be the world's biggest consumer of solar energy. By 2013, its clean tech market could amount to $1 trillion annually, according to a report earlier this month from the China Greentech Initiative, a consortium of U.S. and Chinese companies that includes Cisco Systems and the Silicon Valley VC firm VantagePoint Venture Partners, which specializes in clean tech investments. Read more