China’s rapid development of onshore wind power has made the world’s startling, today officially launched the tender offshore wind power, it immediately triggered a major wind farm developers, “Happy Valley Circle Sea” enthusiasm. Coastal provinces and cities have introduced wind power development plan, generous start planning construction of offshore wind power project. But the industry view, the offshore wind power generators is like a “premature infant”, in the absence of well-developed case available on the rush, many are hidden risks of haste, less speed.
First, wind energy resources. Bureau of Meteorology in China early this year to complete the first detailed investigation and evaluation of wind energy resources, and publish the initial results, our measured 25 meters water depth of 5 meters to the line within the coastal area, 50 meters high above sea level may be about 200 million kilowatts installed capacity . In this survey before, the industry has been that offshore small wind turbines  resources in China up to 750 million kilowatts.
Of course, the detailed planning offshore wind power have not had time to develop. A report on wind power studies pointed out that there are too optimistic to expect that the region’s offshore wind energy resources. In fact many coastal areas of China’s wind energy resource development value has yet to be demonstrated, and some places will be developed by 2020, offshore wind power development target for the amount of wind resources in technology development of all.
In addition, with similar land-based wind power development, technical constraints from the start one of the factors of wind power development. The NDRC energy in renewable energy development Ren Dongming, Deputy Director of the Centre’s view, although China has made to achieve a MW of fans, and has its own technology, but if large-scale development of offshore wind power, China 3 MW or greater capacity fan technology and there is still a gap between foreign countries, and now Europe has achieved the production of 5 megawatts or more fans. A U.S. wind power experts said the United States, the development of offshore wind generators technology is still in research stage, in the land of wind power is not fully developed before any large-scale development of offshore wind power.
And technology is closely related to the price, it relates to offshore wind power generation cost. Offshore wind farm into the intertidal zone and in deep waters. Relatively land-based wind farms, offshore wind farms are the main problems facing the high cost, complex environment, requires high reliability, sea power (600,627, stock it) forces supporting measures. It is understood that domestic land-based wind power project cost an average of 8,000 yuan / kW, of which wind power equipment cost about 5,000 yuan / kW, while the cost of offshore wind power at 20,000 yuan / kW or so, is more than twice the land-based wind power.
High cost means higher electricity prices need to be able to ensure the developer benefits. After years of land-based wind power development has been greatly reduced price, last year, authorities developed a land-based wind power feed-in tariff. Offshore wind power priced? Now, land-based wind power will continue after the way the tender price. While taking into account the wind turbine generators purchase cost, offshore wind power requires government subsidies to give more. Land-based wind power per unit subsidy of about 0.25-0.3 yuan subsidy per kWh of wind power at sea and up to 0.6-0.7 yuan. These subsidies will eventually need all the people “pay the bill.”
Of course, the special layout of our industry, developed coastal provinces, industry, power consumption, while China’s onshore wind energy resources are mainly in the west, far from the centers, long-distance power transmission grid construction progress by the constraints of offshore wind power is close to the load centers to develop offshore wind power wind power development in China inevitable trend, and even our country needs offshore wind far better than other countries.
However, haste makes waste. Chinese Academy of Engineering Ni also believes that the foundation of offshore wind power in addition to high cost of land-based turbine generators is twice that, technically there are many issues – such as monitoring difficult, expensive and large parts of offshore operations, corrosive and other difficult to handle. In his view, the offshore wind power can do some demonstrations, but not to a time when large-scale promotion. “Unless the image of engineering.” Ni said.

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