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The Synergistic Development of Energy Storage and the Marine Economy: The Storage Path of Blue Energy
Created on 11.10
When the wind turbine blades in the deep sea turn with the wind, and the turbines of the tidal power station roar, a brand new energy force is rising on the blue land, and energy storage technology is becoming the key to unleashing this power.
In the Zhoushan sea area of Zhejiang, China's first megawatt-level tidal energy generator unit "Fengjin" has been operating stably for over 5,000 hours, with a grid-connected power generation exceeding 5 million kilowatt-hours.Meanwhile, in the distant North Sea of the UK, Danish energy giant Ørsted is advancing the supporting 300MW/600MWh battery storage system at its Hornsea 3 offshore wind farm, which is expected to be operational in 2026.I'm sorry, but there is no content provided for translation. Please provide the text you would like me to translate.
These projects, thousands of miles apart, collectively reveal a new trend: the deep integration of energy storage technology and the marine economy is quietly changing the way we develop and utilize marine energy.
01 Marine Energy Development: Challenges from "Resource Potential" to "Economic Driving Force"
The ocean, this blue territory that covers about 71% of the Earth's surface, holds enormous energy potential. China has a continental coastline of 18,000 kilometers and an island coastline of 14,000 kilometers.The theoretical exploitable capacity of ocean energy resources exceeds 1.5 billion kilowatts, and the exploitable capacity of nearshore ocean energy technology is close to 67 million kilowatts.I'm sorry, but there is no content provided for translation. Please provide the text you would like to have translated.
However, the development of ocean energy faces unique technical and economic challenges.
Instability and intermittency have become primary challenges. There is often a spatial distance between marine energy-rich areas and electricity load centers, such as the tidal energy power from Zhoushan needing to be transmitted to coastal cities, and the offshore wind power from Xiangshan, Zhejiang needing to cope with the "high during the day and low at night" output fluctuations.I'm sorry, but there is no content provided for translation. Please provide the text you would like me to translate.
High costs and long payback periods restrict the speed of development. Offshore renewable energy projects exhibit typical heavy asset characteristics of "high investment, high risk, and long returns."The total investment per watt for the offshore wind power project in 2024 is between 9-12 yuan, with annual operation and maintenance costs of approximately 0.5-0.9 yuan/watt, and the investment payback period can be as long as 10 years or more.I'm sorry, but it seems that there is no content provided for translation. Please provide the text you would like me to translate.
The problem of grid-connected consumption is also prominent. There are limitations to the distance of traditional AC transmission, and the capacity is relatively limited.The intermittency and instability of marine renewable energy put pressure on grid balance, leading to the phenomenon of "abandoned wind and solar" in some areas.
02 Energy Storage Technology: The "Stabilizer" of Ocean Energy Development
In the face of these challenges, energy storage technology offers a variety of solutions.
Electrochemical Energy Storage: The Responsive "Guardian of the Grid"
Electrochemical energy storage has demonstrated unique advantages in the field of marine energy. Ørsted's 300MW/600MWh battery storage system deployed in the UK is co-located with the onshore substation of the offshore wind farm, sharing grid connections.This design optimizes energy utilization and transmission efficiency, becoming an innovative solution to address grid congestion.
The project is expected to officially commence operations in 2026.It represents a new direction for the coordinated development of offshore wind power and energy storage. Bridgit Hartland-Johnson, Chief Expert in Energy Storage System Integration at Ørsted, believes that "it represents the company's future development direction, and similar projects have entered the development stage, indicating that this solution has significant advantages in the industry."。
Pumped Storage: The "Giant Battery" of Ocean Energy
The "energy island" concept proposed by the Netherlands provides a new approach for large-scale storage of offshore wind energy.This artificial island located in Beihai is actually an offshore pumped storage power station (IOPAC).
When wind energy is abundant, the excess energy is used to pump seawater from the island's "underground lake" into the surrounding sea; when wind energy is insufficient, seawater flows back into the island's "lake" through the generator to generate electricity.According to the feasibility study, a 1500 MW/20 GWh facility size is the most attractive for the Netherlands, with an expected cost savings of 1.3 to 1.6 billion euros over a forty-year usage period.I'm sorry, but it seems that the source text you provided is empty. Please provide the content you would like me to translate.
Hydrogen Storage: The "Hauler" of Deep Sea Energy
For offshore wind farms located more than 100 kilometers away, the cost of electricity transmission is rising sharply.The "offshore wind power generation + renewable energy hydrogen production + comprehensive utilization of hydrogen" model proposed by Yunda Co., Ltd. provides a new solution for this.The source text appears to be empty. Please provide the content you would like to have translated.
According to the calculation and analysis by Yunda Co., Ltd., the offshore distance of 100 kilometers is the economic boundary. Within this range, the power transmission and sales model generally dominates; beyond this distance, the yield advantage of hydrogen production and sales schemes begins to emerge.The yield of on-site hydrogen production at sea far exceeds that of land-based production during the same period, making it more economically advantageous.I'm sorry, but it seems that there is no content provided for translation. Please provide the text you would like me to translate.
03 Diverse Applications: Energy Storage Technology Drives New Patterns in the Marine Economy
Supporting Energy Self-Sufficiency for Islands
The island region is achieving energy self-sufficiency through an integrated model of "wind and solar power generation + energy storage." The integrated comprehensive energy supply project of "wind and solar power generation + energy storage" on Qingdao Daguan Island has been successfully put into operation, promoting the accelerated development of the local aquatic product breeding and processing industry.。
Qingdao Power Supply Company is piloting the application of perovskite solar cells on Dagu Island to solve the energy storage challenges of islands; it is accelerating the construction of a microgrid on Lingshan Island to create a "negative carbon island" demonstration zone.The source text is empty. Please provide the content you would like to have translated.
Promote the green transformation of ports
The green transformation of the port shipping industry also benefits from energy storage technology. Qingdao Power Supply Company actively cooperates with Qingdao Port to carry out special enhancement actions for ship shore power, assisting in the debugging and transformation of shore power equipment, helping the port achieve 100% coverage of shore power.I'm sorry, but it seems that there is no content provided for translation. Please provide the text you would like me to translate.
In the first half of 2024, the electricity supply at Qingdao Port reached 10.26 million kilowatt-hours, a year-on-year increase of 132%.This growth reflects the important role of energy storage technology in supporting emission reduction at ports.
Support the large-scale development of ocean energy
In the field of ocean energy, energy storage technology is helping to address the issue of unstable power generation. The Jiangxia Tidal Power Station in Wenling, Zhejiang is the largest tidal power station in China, with a total installed capacity of 4.2 megawatts, ranking 4th in the world in terms of installed capacity.The source text is empty. Please provide the content you would like to have translated.
China has completed feasibility studies for several tidal power stations with a capacity of one million kilowatts. The average ex-factory electricity price has been calculated to be comparable to the generation costs of tidal power stations in other countries, proving that China's tidal power stations have entered the stage of commercial operation.I'm sorry, but it seems that there is no content provided for translation. Please provide the text you would like to have translated.
04 Innovative Model: The Synergistic Development Path of Marine Energy and Energy Storage
From "Single Development" to "Multi-Energy Complementarity"
The development of marine energy is shifting from the development of a single energy variety to a multi-energy complementary model. "Marine new energy +" and other multi-ecological synergies and multi-scenario applications are becoming the model for innovative development in many regions.I'm sorry, but it seems that there is no content provided for translation. Please provide the text you would like me to translate.
Promoting the coordinated development of various industries such as offshore wind power, offshore photovoltaics, marine energy, hydrogen production, offshore oil and gas, and marine ranching can enhance the utilization rate of three-dimensional space in marine areas and improve the efficiency of marine resource use, thereby increasing the revenue of the marine industry.I'm sorry, but it seems that the source text you provided is empty. Please provide the content you would like me to translate.
From "Energy Output" to "Value Creation"
Energy storage technology is helping marine energy projects shift from simple "energy output" to diversified "value creation."
Consulting firm AFRY's senior executive John Perkins pointed out that energy storage systems can help mitigate the negative price risk of energy projects with Contracts for Difference (CfD).According to the UK Contracts for Difference regulations, if electricity prices are negative for six consecutive hours, the energy project will lose its subsidy.I'm sorry, but there is no content provided for translation. Please provide the text you would like me to translate.
Energy storage systems can also reduce market risks for developers and project owners by "smoothing" out imbalance costs.。
05 Future Outlook: Challenges and Opportunities Coexist
Technical Innovation Demand
The coordinated development of marine energy and energy storage still faces technical challenges. In the field of marine energy, China's research and development capabilities are relatively dispersed, lacking specialized research institutions and talent teams engaged in the development and utilization of marine energy, and the innovation efforts are insufficient.The source text is empty. Please provide the content you would like to have translated.
Some research has been interrupted due to various factors, and there are still key technologies that have not achieved significant breakthroughs. The overall development and utilization of marine energy remain at a low-level repetitive stage, with a relatively small scale of demonstration applications.I'm sorry, but it seems that there is no content provided for translation. Please provide the text you would like to have translated.
Policy support improvement
The development of the industry requires a more完善的政策体系支持. Currently, our country lacks encouraging policies related to the development of the marine energy industry, including subsidies for marine energy grid connection electricity prices, subsidies for power station operation and maintenance, and tax incentives for electricity sales revenue.The source text is empty. Please provide the content you would like to have translated.
This has led to a lack of motivation among relevant enterprises for the transformation of marine energy technology achievements, and the marine energy industry chain is still not完善.The source text is empty. Please provide the content you would like to have translated.
Financial Mechanism Innovation
The green finance support system needs further improvement. Although China's "Green Bond Support Project Catalog (2021 Edition)" includes wind power, photovoltaics, and marine energy within the support scope, the actual proportion of funds specifically allocated for marine new energy from 2020 to 2024 is less than 2%.。
The scale of green bonds supporting offshore wind power in the international market is relatively considerable, with the issuance scale of a single green bond typically reaching several billion euros or dollars, and most of them are medium to long-term bonds.The source text is empty. Please provide the content you would like to have translated.
In Qingdao, Shandong, the energy storage system on Dagu Island is steadily storing wind and solar energy; in the North Sea of the UK, a massive battery storage facility is about to provide peak shaving services for the Hornsea 3 offshore wind farm; in Zhoushan, Zhejiang, the "Fengjin" tidal energy generator is converting the surging ocean currents into clean electricity.
These projects collectively depict a broad prospect for the synergistic development of energy storage technology and the marine economy— they are not merely a simple combination of technologies, but rather core elements in building a blue energy economic system.
With the advancement of technology and the improvement of policies, the deep integration of energy storage technology and the marine economy will bring richer, cleaner, and more stable blue energy to humanity, helping to achieve the grand goal of sustainable development.
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