The government obliges distributors to buy all wind power at preferential tariffs, taking much of the risk out of China Longyuan's business.

ECONOMIST: A Chinese wind-power IPO: Puffed up | The

According to polysilicon producer Renewable Energy, the move by the Chinese government to set up preferential tariffs to boost cleaner energy sources could herald the shift in demand for solar panels from Europe to Asia and the U.S. Some optimistic estimates suggest that China may add as much as 7 GW this year, which is roughly equal the capacity added in Germany in 2011.

FORBES: Asian Demand May Be Bright Spot For Suntech

Nor did they take into account the preferential low tariffs that rich countries already offer to some of the poorest countries.

ECONOMIST: Weighed in the balance