The economy of the hottest offshore wind energy st

2022-10-19
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The economy of offshore wind power storage remains to be tested

it is reported that in most markets around the world, the economy of wind power distribution and storage projects is poor, and only a few markets have a viable "wind power + energy storage" business model

recently, at the UK China offshore wind power series seminar with the theme of "innovation in offshore wind farm energy storage technology", professors from the University of Birmingham Ding Yulong, director of the energy storage research center, said, "for a zero carbon future, it is essential for renewable energy packaging materials to yield. Building a reasonable offshore wind power conversion, storage, transmission and utilization system will effectively solve the technical bottleneck faced by the further development of offshore renewable energy and promote the development of an efficient zero carbon energy system."

zero carbon future offshore wind power is indispensable

under the influence of the COVID-19, many research institutions have released results that global carbon emissions will decline this year compared with last year, and 2019 may become the peak year of global carbon dioxide emissions. In this case, the voice of economic "green recovery" is also growing. In recent months, China, Japan, South Korea and other countries have announced their future net zero emissions targets, and the global carbon reduction process has further accelerated

Ding Yulong introduced at the meeting that the world is rich in offshore renewable energy resources. With the promotion of the zero carbon goal, the global installed scale of offshore wind power is expected to reach 521 GW by 2050. According to the International Energy Agency (IEA), by 2042, offshore wind power is expected to become the largest power source in Europe

"in recent years, the cost of global renewable energy has been declining. In the United States, the cost of offshore wind power is expected to fall to the same level as photovoltaic power generation, while the cost of offshore wind power in China is expected to have greater room for cost reduction." Ding Yulong said at the meeting, "however, from a global perspective, there is a problem that energy resource rich areas are far away from the load center, and there is also a mismatch in the time dimension, which has led to the application scenario of renewable energy distribution and storage."

offshore wind power is rarely distributed and stored

Andrew skocz, CEO of aqua power in Scotland, pointed out at the meeting that most renewable energy sources are highly intermittent. At the same time, there are also problems such as poor predictability and difficult to achieve the balance of supply and demand. He pointed out: "from a global perspective, the current batch deployment of offshore wind power equipped with energy storage is less than that of onshore wind power and photovoltaic fields, and there is also a certain gap in the technological development of offshore wind power equipped with energy storage."

Ding Yulong also pointed out that at present, offshore wind power projects in various countries often adopt high-voltage AC transmission to integrate into electricity, but the investment and maintenance cost of submarine cables is relatively high, and offshore wind power may also lack some flexibility because it does not have the function of energy storage

it is learned that burbo bank, a British offshore wind farm developed by Orsted, a multinational energy enterprise, tried to deploy energy storage facilities around 2017. This project is also regarded as the world's first offshore wind power distribution and storage project. However, from the current situation, there are still few offshore wind power distribution and storage projects in the world

it is understood that at present, the energy storage equipped with onshore wind power and photovoltaic power is mainly based on the technical routes of electrochemistry and pumped storage, while some regions are trying to study the technical routes of compressed air energy storage. However, in Andrew skocz's view, generally speaking, the energy storage system equipped with offshore wind power is still facing the problem of insufficient system efficiency

economic benefit is the main consideration

Andrew skocz pointed out that although the current global energy storage market is growing rapidly and the demand for energy storage is increasing, the energy storage field is also facing the dilemma that it is difficult to improve the overall efficiency

"only with the space for sustainable development can we achieve popularization. For the energy storage system, the factors that need to be paid attention to include the speed of charge and discharge, the number of charge and discharge, etc. the energy storage technology to achieve large-scale application should also have sufficient resource supply. For example, large-scale land-based energy storage faces the problem of large land occupation, while lithium battery energy storage may face the competition in the electric vehicle market." Andrew skocz said

Bloomberg new energy finance also recently released a report that in most markets around the world, the economics of wind power distribution and storage projects are poor, and only a few markets have a viable "wind power + energy storage" business model. Bloomberg new energy financial analysis said that if the wind storage project is only used for a single application scenario, the economic benefit is low; If the project can be put into multiple application scenarios, the economic benefits will be greatly improved

Ding Yulong pointed out that if the energy storage system can be combined with power supply, heating and other applications, it may build a more efficient energy system. "Liquid air platform integrating offshore wind power, tidal energy or wave energy may be one of the solutions, and liquid air can also be used. 1. Polyurethane adhesive for food packaging: it can withstand 120 ~ 135 ℃ high temperature cooking or solvent-free use of hydrogen, methanol and other fuels. Based on this platform, the application scenarios will include hydrogen storage, ammonia storage, LNG, etc., to realize offshore energy transportation."

Bloomberg new energy finance predicts that although the field of wind power equipped with energy storage has developed slowly so far, with the continuous change of power requirements, the continuous emergence of supporting policies and the increasing improvement of economy, the wind storage market is expected to usher in growth in the future

however, for China, some industry experts believe that considering the current development status of the offshore wind power market, which can move forward and backward on the framework, it will be difficult for enterprises to bear the high cost to equip with energy storage and even more diversified design. An unnamed industry expert told that with the continuous cost reduction of domestic renewable energy, photovoltaic and onshore wind power have been able to achieve parity. Compared with that, the competitiveness of offshore wind power has been slightly insufficient. For domestic offshore wind power projects, it is not necessary to equip large-scale energy storage facilities

original title: the economy of offshore wind power distribution and storage needs to be tested

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