On April 21, Shanghai issued the "Special Fund Support Measures for the Development of Renewable Energy and New Energy in Shanghai", which stipulates a subsidy of 0.2 yuan per kilowatt-hour for Shanghai's offshore wind power projects. This subsidy policy is applicable to the projects that were put into production and power generation in Shanghai from 2013 to 2015. The project investors will be rewarded according to the actual generated electricity (wind power is based on on-grid electricity), and the reward period is 5 consecutive years. The annual award amount for a single project shall not exceed 50 million yuan.

 

On June 5, the National Development and Reform Commission released the offshore wind power price policy. The policy stipulates that this electricity price is for projects that were put into operation before 2013, that is, they must be put into operation in 2016 to enjoy this price. Offshore 0.85 yuan, intertidal zone 0.78 yuan. This document continues to encourage the acquisition of offshore wind power project development rights in the form of concessions. Of course, the winning bid price cannot be higher than the on-grid electricity price stipulated by the state. After 2017, this electricity price will be studied separately according to the situation.

 

After the electricity price policy came out, within ten days, the National Energy Administration issued a notice of No. 2014 (45). This notice requires the development and reform commissions and energy bureaus of coastal provinces and cities to submit alternative projects for the development and construction of offshore wind power in the near future. These projects are required to be put into operation by the end of 2016, and the price is 0.85 yuan. The project reported this time has three requirements. First, there should be no restrictive factors for grid access; second, it must require more than one year of contact wind measurement in the long run; third, the project has completed a pre-feasible project. That is to say, these projects have been reported to the National Energy Administration on June 24.

 

Status quo of offshore wind power development

 

The total installed capacity of offshore wind power built nationwide is 400,000 kilowatts (including prototypes). Deducting the prototype is 5 projects, the total installed capacity is 354,000 kilowatts. Among them, the first phase of Shanghai Donghai Bridge is 100,000 kilowatts, and the remaining four projects are all in Jiangsu Province.

 

In 2013, there were 17 projects approved by the National Energy Administration, mainly distributed in Jiangsu, Fujian, Hebei, Guangdong, Hainan and Shanghai, with a total installed capacity of 4.1 million kilowatts.

 

In addition, projects with a total installed capacity of 11 million kilowatts are being carried out across the country, including projects with an installed capacity of more than 7 million.

 

There are currently about 6 offshore wind power projects under construction, with a total installed capacity of 780,000 kilowatts.

 

At present, 6 projects to be built have been approved, with a total installed capacity of 1.35 million kilowatts.

 

According to the offshore wind power planning and preliminary work progress, the national plan proposes that the development and construction of offshore wind power will be 5 million kilowatts in 2015 and 30 million kilowatts in 2020. From the current situation to the realization of the planning goals in 2015, it will be difficult to achieve.

 

Offshore wind power planning and project progress

 

The domestic offshore wind power planning started in 2007. First, Jiangsu Province began to plan for a million kilowatt offshore wind power base along the coast of Jiangsu. By 2009, based on the offshore wind power plan of Jiangsu Province, a work outline for offshore wind power was formulated, and the planning of offshore wind power in coastal provinces and cities was launched. So far, offshore wind power plans in Shanghai, Jiangsu, Shandong, Hebei, Guangdong, Liaoning and Dalian have been approved by the state. Offshore wind power plans in Zhejiang, Fujian and Hainan are being approved, and offshore wind power plans in Guangxi are being prepared.

 

According to the current plan, the key distribution areas in Jiangsu are mainly Nantong and Lianyungang, the key distribution areas in Shandong are mainly Laizhou Bay, the key distribution areas in Guangdong are mainly eastern and western Guangdong, the key distribution areas in Shanghai are mainly the East China Sea Bridge, and the key distribution areas in Hebei are mainly It is Tangshan, and Zhejiang's key layout areas are mainly in Hangzhou Bay, Taizhou and Wenzhou.

 

Jiangsu Province Offshore Wind Power Planning and Project Progress

 

According to the plan, Jiangsu Province has formed three relatively concentrated offshore wind power bases of 1 million kilowatts, namely Lianyungang 2.57 million kilowatts, southern Yancheng 540 kilowatts, and Nantong base 4.58 million kilowatts.

 

Jiangsu Rudong Intertidal Zone Test Wind Farm: This wind farm includes 8 wind turbine manufacturers, including United Power, Guangdong Mingyang, Envision Energy, Sany Electric, Shanghai Electric, Chongqing Haizhuang, Goldwind Technology, and Sinovel. There are 9 models with single capacity from 1.5 MW to 3 MW. The form of foundation includes low pile cap, five pile jacket, six pile jacket, seven pile jacket, single pile foundation and so on.

 

CGNPC Rudong Offshore Wind Farm: 38 sets of 4 MW wind turbines are used, with a total installed capacity of 152 MW, and most of them have a water depth of about 15 meters. Geological conditions The surface layer is mud and clay, and the lower part is silty soil. The technical version adopts a monopile structure with a diameter of 5.8 to 6.7 meters. The local machine position is not a transition section, but the transition section adopts two methods of grouting and connection. A 110-sea booster station is used, the dynamic investment is 2.845 billion yuan, and the electricity price is 0.85 yuan. In 2013, the wind turbine bidding was completed, and Siemens' 4 MW wind turbine won the bid. The trial installation experiment was completed in 2013. It is expected that the construction will be officially started in the second half of this year. Next year, the first batch of units will generate electricity. If this project is fully put into operation in 16 years, it will become the first domestic project with an offshore booster station and long-distance submarine cable transmission.

 

Jiangsu Xiangshui Offshore Wind Power Project: Located in Xiangshui County, Jiangsu Province, the offshore distance is 4 kilometers, and the water depth is 6-12 meters. Install 67 fans with a single capacity of 3 MW, with a total installed capacity of 200,000 kilowatts. The project uses a 2.0-sea booster station and a 12-kilometer submarine cable. The project was approved in June 2013 and construction is expected to begin in the second half of 2014.

 

Longyuan Rudong 200,000 offshore wind power expansion project: the total installed capacity is 200,000 kilowatts, using 50 4MW wind turbines, and the maximum water depth reaches 16 meters. This is an intertidal and offshore project. The project has started in the first half of this year, and now the hoisting of the two units has been completed, and it is expected that all of them will be completed and put into operation by the end of next year. The project uses 25 Vision 4MW and 25 Siemens 4MW wind turbines. The foundation used is a new monopile foundation without filter section and a large jacket. Among them, there are a total of 36 monopile foundations and 14 jacket foundations.

 

Zhejiang Offshore Wind Power Planning and Project Progress

 

More than a dozen offshore wind towers have been set up in the waters of Zhejiang Province. At present, the Putuo No. 6 offshore wind power project in Zhejiang Province has been approved.

 

Putuo No. 6 Offshore Wind Power Project: Located outside Putuo Island. 62 sets of 4 MW wind turbines are used, arranged in 2 rows, and the row spacing is 2.5 kilometers. The substation is 11 kilometers offshore and the water depth is 12 to 16 meters. The foundation of the wind turbine adopts a high pile cap foundation with high rigidity. The offshore booster station adopts the foundation of 4-leg jacket erection. Supporting the construction of 220 offshore booster stations. A feasibility study was carried out for this project in 2011, road signs were obtained in 2012, and approval was obtained at the end of 2013, and construction has started in the second half of this year.

 

Zhejiang Jiaxing No. 1 Offshore Wind Power Plant: located in the waters of Pinghu, Jiaxing City, Hangzhou Bay, with an installed capacity of 30 MW. At present, the project has completed all pre-feasibility research work and passed the acceptance. Feasibility studies and related work for project approval have been carried out. The project is located in Hangzhou Bay, and the marine hydrological conditions are complex, especially the tidal currents are large. The project will install 60 5 MW wind turbines and set up 220 offshore booster stations. The total construction period is 40 months. It is planned to be approved and started in 2015, and it will be fully put into production in 2018.

 

Fujian Offshore Wind Power Planning and Project Progress

 

The entire sea area of ​​Fujian Province is 136,000 square kilometers, and the length of the coastline is more than 6,000 kilometers. Affected by the monsoon climate, Fujian has a relatively large annual average wind speed. In autumn and winter, the northeasterly wind prevails, and the wind direction is stable. It is the region with the most abundant wind energy resources in the country and even in Asia.

 

In the entire waters of Fujian Province, the section from the mouth of the Minjiang River to the south to Xiamen Bay is affected by the "narrow tube effect" of the Taiwan Strait, and is the place with the most abundant monsoon resources. The areas north of the Minjiang Estuary are relatively less resourceful than the areas in southern Fujian, but they are also richer.

 

From the perspective of time, the distribution of the entire resource shows that the annual wind speed is relatively large in autumn and winter, and the average wind speed in summer is relatively small. The main prevailing wind directions in the waters of Fujian are relatively stable, and are dominated by northeasterly winds and northerly easterly winds. His wind energy accounts for about 70-80% of the total wind energy in the whole year. The area with the best wind energy resources in the entire sea area of ​​Fujian Province is from the south of the Minjiang Estuary to the Xiamen Bay. The average annual wind speed is about 8-10 meters. The average wind speed in the south of Xiamen is between 7-8 meters, and the average wind speed in Ningde area is about 6.5-8 meters.

 

The total area of ​​deep sea wind energy resources in Fujian Province that can be developed is about 1,200 square kilometers with a water depth of 0-5 meters, 4,300 square kilometers with a water depth of 5 to 20 meters, and 1,900 square kilometers with a water depth of 20 to 50 meters. The theoretical reserves of offshore wind power in Fujian Province are nearly 120 million kilowatts.

 

One of the characteristics of Fujian's offshore wind power planning is that it is understood by the state that it does not strictly follow the "Double Ten" regulations. According to the "Double Ten" regulations, there are very few resources that can be developed in Fujian Province. Another feature is that there are many islands and reefs in the planned sea area, and during the construction conditions, the geological changes and water depth changes are relatively large. Another feature is that most of the planned sites are in the sea area that is relatively close to the shore.

 

The earliest planning report mentioned 16 sites with an installed capacity of about 11 million kilowatts. After repeated communication, 13 sites with 5.9 million kilowatts were finally submitted for review. There are also 9 reserve sites, 4.7 million kilowatts.

 

Five sites are planned in Fuzhou, namely Lianjiang Dinghai Bay, Haitan Strait, Fuqing Xinghua Bay, Pingtan Caoyu, with a total installed capacity of 1.25 million kilowatts; 3 sites are planned in Putian, one is Pinghai Bay , the planned installed capacity is 500,000 kilowatts, the second is Nanri Island with a planned capacity of 600,000 kilowatts, and the third site is the Putian Shicheng Yugang Offshore Wind Farm; Quanzhou has planned three wind farms; A wind farm in Ao has a total planned capacity of 1 million kilowatts; the last one is the Dongshan Xipu Wind Farm.

 

From the perspective of comprehensive construction conditions, the best development conditions at the current stage should be Putian Pinghai Bay, Putian Nanri Island, Fuqing Haitan Strait, and Putian's Shicheng Fishing Port. piece.

 

Project progress: At present, the projects in Putian Pinghai Bay, Nanri Island, Zhangzhou Liuao, and Haitan Strait are progressing relatively quickly. At present, the 50,000-kilowatt project in Pinghai Bay basically meets the conditions for approval. in argument. The country has given the roadmap for the 400,000-kilowatt project of Nanri Island, and the work of feasibility study is currently being promoted. In the early stage, 4 prototypes have been trial-installed. Although they have not yet been approved, they will continue to accumulate experience for the follow-up. There are a relatively large batch of other recommended pre-commissioning projects, Haitan Strait, Pinghai Bay, and several remaining wind farms are doing pre-commissioning work.

 

Guangxi Offshore Wind Power Planning

 

Guangxi has a marine function plan since 1999. In 2005, 10 types of sea-use areas were planned, with 182 sea-use areas. Among them, a total of 23 sites can be used for engineering sea.

 

The basic situation of Guangxi: On the coastline of 1595 kilometers in Guangxi, under the condition of water depth of 0 meters to 20 meters, there is an area of ​​6488 square kilometers. Among them are the important ports of Qingzhou Bay, Lianzhou Bay, Tieshan Bay, Fangshan Bay and Pearl Harbor. Such a function has been included in the Guangxi planning since 2005. An implementation plan was also carried out at that time.

 

In 2008, a local adjustment was made in response to some marine disasters and some changes in marine functions in Guangxi. In 2008, a planning scope for 150 wind farms was issued. Adjustments have been made to local ports and shipping lanes. This is a partial adjustment. The latest version is the 2011 Guangxi Ocean Planning. There are a total of 104 sites, which are divided into 4 types of areas. Among them, the third category and the rest of the fourth category can be considered to be developed into industrial seas and sewage seas.

 

There are a total of 43 sites in Category 3 and Category 4 areas, of which about 10 sites are more suitable for the development and construction of offshore wind power. There are some maritime, marine and fishery involved here. When the 43 sites were commissioned by the owners and the Development and Reform Commission to investigate, they found that there were potential factors that could not be controlled. This place may have a greater impact on the situation in the South China Sea, and the requirements of the troops are relatively harsh. We will further analyze these 10 sites in detail.

 

To sum up, from 180 sites in 2005, 23 industrial seas can be developed, and in 2011, 104 sites can develop industrial seas in 43 areas.

 

In general, compared with the wind resources in Jiangsu and Fujian, the wind resources in Guangxi are relatively poor. The basic wind speed is within the range of 7-7.5m/s, and the potential and value of his development need to be considered.

 

For the offshore wind power tariff policy introduced this year, for Guangxi, cost control should be placed in a very important position, because its wind resource situation is not particularly ideal.