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Actively Exploring Multi-Energy Complementary Models, Sunwoda Builds a Near-Zero Carbon Lithium Power Base

Apr 19,2023

With the transformation of the physical form of energy systems, the form of energy services also presents new characteristics. As a new form of energy services in China, Sunwoda’s integrated energy services break the traditional monolithic energy service model and meet the diversified and personalized energy needs of customers, attracting high attention from all sides.

Integrated Energy Project in Sunwoda Nanjing Park Phase II Plant is located in Sunwoda New Energy Industrial Base, Lishui District, Nanjing, Jiangsu Province. It responds to major development concepts of innovation, coordination, green, openness, and sharing, and expands four functional areas of power services, responsible for providing power supply services, energy-saving services, charging services, and cooling services to the park. It has achieved practical results such as improving the park's energy utilization efficiency, reducing the park's comprehensive energy costs, reducing carbon emissions and power supply reliability.

Multi-Energy Complementary Combined Energy Supply System

The project has a multi-energy complementary combined energy supply system, covering a number of new business scenarios: distributed photovoltaic system, photovoltaic storage and charging micro-grid system (super fast charging + photovoltaic + energy storage), chilled water storage and natural cold source system and steam condensate recovery system.

The distributed photovoltaic system generates electricity in pieces and is connected to the grid at 10kV. It adopts the "self-generation and grid access" model. It is expected that the total power generation capacity will reach 127 million kWh in 25 years, reducing carbon emissions by 125,000 tonnes, sharing the benefits of power generation with the park, creating increased income from assets, and achieving energy saving and emission reduction.

The photovoltaic storage and charging micro-grid system (super fast charging + photovoltaic + energy storage) effectively solves the problem of insufficient power distribution capacity by shifting peaks through photovoltaic + energy storage, while the super charging technology, combined with Sunwoda's super-charging batteries, achieves 10-minute fast power replenishment, helping to improve charging speed, reducing mileage anxiety, meeting users' charging needs and helping users in the park to travel with zero carbon.

The chilled water storage system stores cold during the valley hours and releases cold during the peak hours of the electricity tariff. The average daily storage capacity is 46,100 cold tons, and the average annual storage capacity is 16,831,400 cold tons. After the chilled water storage system is put into use, the average annual electricity cost saving is about RMB 5,382,200. The natural cold source system operates in winter with an annual average cooling capacity of 2,592,000 cold tonnes, saving an annual electricity bill of approximately RMB 352,900.

The steam condensate recovery system recycles the waste heat of steam condensate to produce chilled water. After the waste heat recovery, the steam condensate can be used as make-up water for the cooling water tower on the roof of the power station, realizing the gradual use of thermal energy and solving the problem of high-temperature waste water discharge.

The project is oriented towards cleanliness and economy, with a comprehensive assessment of the conversion efficiency and complementary substitution characteristics of multiple energy sources, and the use of digital simulation technology to realize the optimal integrated energy planning solution for the park. By deploying a digital energy platform, the project will realize multi-energy synergy and optimize the operation of the system. A number of building-level, campus-level, and district-level multi-energy complementary integrated energy supply systems have been built to help the industrial parks achieve zero carbon development.

Diversified Exploration of Integrated Energy Service Model

The 14th Five-Year Plan for Modern Energy System issued by the National Development and Reform Commission and the National Energy Administration proposes to adhere to ecological priorities and green development, grow the clean energy industry, implement renewable energy alternatives, and promote a gradual increase in the proportion of new energy sources. Integrated energy services are an inevitable choice to meet the trend of energy consumption.

Sunwoda Smart Energy has diversified solutions and rich project experience in the field of integrated energy services and can provide customers with core equipment, system integration, overall solutions, planning and design, engineering construction, operation and maintenance, and other comprehensive services. A number of building-level, park-level, and district-level multi-energy complementary integrated energy supply systems have been built to help industrial parks achieve zero carbon development.

In the future, Sunwoda Energy Technology will continue to explore and tackle new technical problems to create more vivid cases for integrated intelligent energy solutions,  contributing innovative solutions to the new power system under the goal of "double carbon".

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