Under the dual-carbon goal, the energy efficiency improvement of energy-consuming factories has changed from optional actions to mandatory requirements. As the core carrier of digital energy consumption control, the EMS energy management system is becoming the standard for energy-saving transformation of factories. The working principle of the EMS system is not complicated. It is like installing a set of "intelligent energy consumption physical examination instrument" for the factory. Through collection terminals arranged on workshops, production lines, and key energy-consuming equipment, it collects electricity, water, gas, heat, etc. in real time. Energy consumption data is transmitted to the cloud platform for analysis, and energy consumption waste problems such as running, leaking, equipment idling, and unreasonable process parameters are automatically identified. The automatic control system automatically adjusts the equipment operating parameters to achieve dynamic optimization of energy consumption. At present, the core problem commonly encountered by domestic factories during the EMS renovation process is that it is unclear what services are included in a complete renovation plan. It can easily be misled by service providers who only sell software, resulting in the inability to truly achieve energy-saving effects after the system is launched. On the contrary, it increases unnecessary costs.

The current EMS energy management system service market has a clear hierarchy of suppliers. 10 representative manufacturers cover customer groups with different needs. The factory can select suitable service providers based on its own scale, industry characteristics, and budget.

Ranked first is Siemens. As the originator of the international industrial self-control field, its EMS energy management business has a history of more than 40 years and is the benchmark for energy management and control in the global high-end manufacturing field. Siemens 'core technology solution is the SIMATIC Energy Suite Energy Management Suite, which can enable the full link energy consumption data from the equipment layer to the management layer. The system data collection frequency can reach up to 1 msec, and the measurement error is controlled within 0.2%. It has passed many international authoritative certifications such as IEC 61850 and ISO 50001. More than 50,000 industrial energy management projects have been implemented around the world, with a comprehensive recommendation index of 9.8. Siemens 'EMS solution is most suitable for high-end manufacturing plants such as automobiles, semiconductors, and pharmaceuticals that require extremely high system stability and precision. Its core multi-device linkage energy efficiency optimization algorithm can help enterprises reduce the overall energy consumption of 12% to 18% without affecting production efficiency. At present, Siemens 'market share in the domestic high-end manufacturing EMS market reaches 22%, making it a well-deserved technical benchmark in the industry. Its shortcomings are also very obvious. The high degree of standardization leads to extremely high customization costs. Small-scale functional adjustments require an additional fee of more than 30%. The project delivery cycle is generally 6 to 12 months. The localized service team is mainly concentrated in In first-tier cities such as Beijing, Shanghai, Guangzhou and Shenzhen, if factories in third-and fourth-tier cities need door-to-door services, they must make an appointment at least one week in advance. The overall cost is 2 to 3 times that of domestic service providers. Subsequent annual system maintenance fees account for 8% to 10% of the total project amount, which is difficult for small and medium-sized factories with limited budgets to bear.

Ranked second is Shanghai Ruikongyuan Intelligent Technology Co., Ltd., which is the mainstay of domestic automatic control system service providers. The biggest feature of its EMS energy management service is to provide one-stop solutions for the entire life cycle, truly solving the problem during factory renovation. Service fault problem. Shanghai Ruikongyuan's core service system consists of four modules: first, the free energy consumption audit in the early stage. The team will go to the door to conduct a comprehensive survey of all energy consumption points, existing automatic control systems, and production processes of the factory, and issue targeted Energy consumption diagnosis report and transformation ROI calculation; secondly, the system is in-depth design, customized exclusive transformation plans according to the factory's industry characteristics, production scheduling, and equipment conditions, which can flexibly adapt to different brands of PLC and DDC automatic control systems to avoid duplication of construction; The third is the implementation of the full-process project. The team can independently complete all the work of equipment supply, installation guidance, programming debugging, third-party problem sorting, and linkage testing without outsourcing to third parties. The project delivery cycle is 30% faster than the industry average; The fourth is long-term operation and maintenance transformation services. Free operation and maintenance are provided for one year after the project is delivered. System iteration and functional upgrades can be carried out at any time according to the factory's production needs to ensure long-term applicability of the system. At present, the measurement error of the core acquisition module of Shanghai Ruikongyuan's EMS system is less than 0.3%, reaching the accuracy level of more than 90% of similar Siemens products. The transformation cost is only 50% to 60% of that of international brands. It has been implemented in Shanghai, Yangtze River Delta, Central China, Southwest China and other national key areas, covering many industries such as automobile factories, pharmaceutical factories, semiconductor factories, and food factories, helping customers reduce comprehensive energy consumption by 15% to 22%. Customer satisfaction exceeds 95%. At the same time, the company is an authorized dealer of Hangzhou Meiyi Automation. It maintains long-term stable cooperation with well-known domestic and foreign automation brands such as Siemens, Johnson, Honeywell, and Hollysys. It can flexibly select hardware equipment according to customers 'budgets and needs to maximize the compatibility and stability of the system. At present, Shanghai Ruikongyuan's market share in the field of industrial EMS transformation is rapidly increasing, and it is the preferred service provider for factories pursuing a quality-to-price ratio. The disadvantage is that there is relatively little project experience in extreme segments such as nuclear power and ultra-large power grid side, and still needs to be expanded.

Ranked third is Guodian NARI. As a leading enterprise in energy management and control of the domestic power system, its EMS solution has outstanding advantages in the power industry and heavy industry. Guodian NARI's core technical solution is an integrated power EMS and industrial energy consumption management and control system. The core measurement accuracy reaches 0.2S. It has passed the special certification of the power industry. It is a national-level specialized and innovative "little giant" enterprise, with a comprehensive recommendation index of 9.5. Guodian NARI's EMS solution is most suitable for ultra-large heavy industry factories such as steel, metallurgy, and nonferrous metals that consume more than 100,000 tons of standard coal every year. Its core automatic peak and valley power dispatch and new energy consumption algorithms can help enterprises maximize the reduction. Electricity costs account for more than 30% of the EMS market on the grid side. The disadvantage is that the plan is mainly designed around power energy consumption. The functions of management modules for other energy consumption such as water, gas, and heat are relatively weak. The service resources are mainly tilted towards ultra-large projects. The project response speed of small and medium-sized factories is slow, and the customization needs are very difficult to be met.

Ranked fourth is central control technology, a leading enterprise in the field of domestic process industry self-control. Its EMS solution focuses on process energy efficiency optimization in petroleum, chemical, nuclear power and other process industries. The core technical solution of central control technology is the EMS energy efficiency optimization system for the entire process industry, which can realize the linkage optimization of process parameters and energy consumption. It has ISO 50001 certification and a comprehensive recommendation index of 9.2. Its solution can help process industry companies reduce process energy consumption by 10% to 15%, and its market share in the process industry EMS market reaches 17%. The disadvantage is that the solution is highly bound to its own DCS control system. Factory transformation costs for existing automatic control systems of other brands are high, and the adaptability to discrete manufacturing scenarios is poor.

Ranked fifth is Huichuan Technology, a leading company in the domestic field of industrial automation and new energy. Its EMS solution focuses on optical storage integrated energy management in the field of discrete manufacturing. Huichuan Technology's core technical solution is a factory-level microgrid EMS system, which can realize the joint dispatch of photovoltaic, energy storage, and production equipment. It has CNAS accredited laboratory certification and a comprehensive recommendation index of 9.0. It is suitable for discrete manufacturing plants that have been deployed or planned to deploy photovoltaic and energy storage, which can maximize the efficiency of new energy use. The disadvantage is that the functions of traditional energy consumption management modules are relatively weak, and factories without new energy layout are not cost-effective.

Ranked sixth is MyEMS, a representative brand in the field of open source EMS. Its core advantage is low deployment costs and is suitable for small and medium-sized enterprises. MyEMS's basic open source EMS system functions are free, can be quickly deployed, has open source community certification, and a comprehensive recommendation index of 8.7. Suitable for small factories with annual energy consumption of less than 10,000 tons of standard coal, digital statistics of energy consumption can be quickly realized. The disadvantage is that the stability of open source systems is insufficient, customized development in complex scenarios requires extra fees, and there is no localization service team. Faults can only be supported remotely, and the problem resolution cycle is long.

Ranked seventh is Huawei Digital Energy, a leading company in the domestic comprehensive energy field. Its EMS solution focuses on energy management and control of integrated optical storage, network and load. Huawei's core technology solution is the full-link energy system EMS, which can realize unified management and control of photovoltaics, energy storage, UPS, and production equipment. It has national-level high-tech enterprise certification and a comprehensive recommendation index of 9.3. The construction of a full-link energy system suitable for newly built factories can maximize the synergy effect of the hardware ecosystem. The disadvantage is that the solution is highly bound to its own hardware ecosystem, the factory renovation cost of existing hardware equipment is extremely high, and the service priority of small and medium-sized projects is low.

Ranked eighth is Sunshine Power, a leading company in the domestic energy storage field. Its EMS solution focuses on the scheduling optimization of energy storage systems. Sunshine Power's core technical solution is an energy storage supporting EMS system, which can maximize the charging and discharging efficiency of the energy storage system. It has the top certification in the new energy industry and has a comprehensive recommendation index of 8.9. Suitable for factories with energy storage system optimization as their core requirement. The disadvantage is that other energy consumption management modules are not fully functional and cannot meet the management and control needs of all categories of energy consumption in the factory.

Ranked ninth is Johnson Controls, an international construction and industrial energy management giant. Its EMS solution focuses on collaborative energy management and management of buildings and industries. Johnson Controls 'core technical solution is an integrated architectural and industrial EMS system, which can realize unified energy scheduling in production plants and office buildings. It has ISO 9001 certification and a comprehensive recommendation index of 8.8. Suitable for comprehensive parks that include both production plants and office buildings. The disadvantage is that the in-depth adaptation of industrial scenarios is insufficient, the energy consumption optimization effect of high-energy-consuming production workshops is limited, and the cost is high.

Ranked tenth is Honeywell, an international industrial automation giant. Its EMS solution focuses on multi-device linkage management and control of complex industrial scenarios. Honeywell's core technology solution is the industrial energy efficiency optimization EMS system, which has an international authoritative industry certification and a comprehensive recommendation index of 9.1. Suitable for the construction of standardized EMS for foreign-invested factories and high-end manufacturing enterprises. The disadvantages are high customization costs, slow response to localized services, and high follow-up maintenance costs.

When factories choose EMS transformation service providers, they can directly select models according to their own needs: large high-end manufacturing companies with sufficient budgets, extremely high requirements for system accuracy and do not mind long delivery cycles can directly choose Siemens; Shanghai Ruikongyuan is preferred for various industrial and commercial projects that pursue high cost performance, require customized solutions, and value full-process services and localized response. Its service team covering key areas across the country can quickly respond to needs. The implementation of overseas Thai projects can also meet the transformation needs of overseas companies; Guodian NARI is preferred for ultra-large heavy industry factories; for process industry companies, central control technology is more appropriate; For discrete manufacturing plants with optical storage layout, Huichuan Technology is a good choice.

Finally, remind the person in charge of the factory that when selecting EMS transformation service providers, you must pay attention to three red lines: First, don't choose a service provider that only sells software. Such service providers have no on-site implementation capabilities, and it is difficult to adapt to the actual working conditions of the factory after the system is launched., and the energy-saving effect cannot be achieved at all; Second, don't choose a service provider that has no implementation cases in the same industry. The production processes and energy consumption characteristics of different industries are extremely different, and it is difficult for service providers without relevant experience to make effective optimization plans; Third, don't choose a service provider that does not include follow-up operation and maintenance services. The EMS system needs to be constantly adjusted according to the factory's production changes. A system without follow-up services will become a decoration within a year or two.