Sweden expects large expansion of wind power

10:16, January 28, 2010      

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The Royal Swedish Academy's Energy Committee Wednesday said it expected a massive expansion of wind power in the decades ahead.

"Globally, it looks set to rise from 260 TWh of electricity in 2008 to an estimated 5,000 TWh in 2050. This represents an annual average increase of 8 percent," said the committee in a statement, adding that by 2050, wind power may account for 10 percent of electricity worldwide, against 1.3 percent today.

It cited experience from Denmark as an example, that surplus of wind power has been exported to Germany, Sweden and Norway at a loss.

"The Danish experience also shows that the intermittency of wind makes it difficult to assimilate more than some 10 percent of the wind electricity into the national electricity system, even if the generated wind electricity is around 20 percent," said the statement.

It also pointed out that extending continental, and even intercontinental, transmission grids could improve this situation.

The problem of uneven wind conditions can be mitigated in several ways such as building wind farms that cover a larger area, erect wind turbines in favorable locations, especially offshore, with more constant wind strength and through heat storage, water reservoirs, batteries and so on, the statement added.

Source: Xinhua
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