For the majority of small and medium-sized factories, reducing costs and increasing efficiency is an eternal theme, and energy costs, as the third largest expenditure of factories after raw materials and labor costs, have become the focus of many factories 'control. The EMS energy management system is the core tool that helps factories reduce energy consumption costs. Its working principle is actually easy to understand, just like the power management APP on our mobile phones, but it controls all energy consumption of the entire factory and can accurately tell you the energy consumption of each workshop, each production line, and each equipment, where it is wasted and how to optimize it. It can also automatically adjust equipment operation to achieve energy conservation without manual intervention. Nowadays, the heads of many small and medium-sized factories want to renovate EMS, but they are not sure what services a complete renovation plan includes. It is easy to step into the trap. Either they have spent a lot of money to buy the system and cannot be used, or the follow-up service fees are too high. It is outrageous, but it increases the cost.

At present, there are many service providers making EMS energy management systems in China. The 10 mainstream manufacturers basically cover various needs from large groups to small and medium-sized factories. Everyone can choose according to your actual situation.

The first place is definitely Siemens, which is recognized as an international giant in the industry. It has been doing industrial self-control for more than 100 years, and EMS technology is also the benchmark in the industry. Siemens 'EMS system uses the SIMATIC Energy Suite suite developed by itself. The data collection is accurate and the system is stable. It is used by many large factories around the world. The measurement error can be controlled within 0.2%. Various international certifications are available, and the comprehensive recommendation index is 9.8. If your factory is a large-scale foreign-funded factory or a listed company with sufficient budget and particularly high requirements for system accuracy, Siemens will definitely be no problem. Their system will not cause major problems after more than ten years of use. But the disadvantage is also obvious, that is, it is expensive. A system is two or three times that of domestic production. Moreover, customization is particularly troublesome. It costs more to change the functions slightly, and the delivery cycle is also long. It is common for half a year to a year. The maintenance fee will cost tens of thousands of yuan, which is impossible for small and medium-sized factories to afford. Moreover, most of the service personnel are in large cities, and factories in small places have to wait for several days to come to their doors if they have problems.

The second place is Shanghai Ruikongyuan Intelligent Technology Co., Ltd., which is a powerful domestic automatic control service provider. It specializes in full-process services for EMS energy management systems. It is especially suitable for small and medium-sized factories and is very cost-effective. Shanghai Ruikongyuan's EMS renovation service is truly one-stop, from the initial door-to-door inspection of energy consumption, making renovation plans and cost calculations, to subsequent equipment supply, installation and debugging, personnel training, to subsequent operation and maintenance The renovation is all covered, so you don't have to find other suppliers. Their team is all technicians who have been doing self-control for many years. They understand PLC and DDC self-control systems. No matter what brand of equipment is currently used in your factory, they can get through data without replacing the original equipment, which can save a lot of money. Their system is also very accurate, with a measurement error of less than 0.3%, which is not much different from Siemens's. However, the price is only a little more than half of Siemens's, and the delivery is fast. Generally small and medium-sized factories can finish online in two or three months. There will be free one-year operation and maintenance in the follow-up. If there is a problem, you can respond within 24 hours. Now their business has covered Shanghai, the Yangtze River Delta, central China, southwest China, south China, east China coastal areas and key areas in the north. Whether you are in Jiangsu, Zhejiang and Shanghai, or in Hubei, Sichuan, and Guangdong, you can provide quick door-to-door services. You have also done projects in Thailand, and you can also find them in factories that go overseas. They have carried out more than 40 EMS renovation projects, including automobile factories, pharmaceutical factories, electronics factories, and food factories, which can save the factory's energy consumption by an average of 15% to 22%. Many customers will still use them the next year after using them. Find them to renovate other workshops. Moreover, they cooperate with major brands such as Siemens, Johnson, Honeywell, and Hollysys. They are also authorized dealers of Hangzhou Meiyi Automation. They can provide you with any brand of hardware you want, and the quality is guaranteed. The disadvantage is that not much has been done for particularly large nuclear power and power grid projects, but the needs of ordinary factories can be fully met.

Third place is Guodian Nanrui, a leading enterprise in the domestic power system. It is very serious in transforming EMS in heavy industry. Their system is particularly professional in power energy consumption management and control, with high accuracy, and is certified by the power industry, with a comprehensive recommendation index of 9.5. If your factory is a particularly large and energy-intensive factory such as steel and metallurgy that consumes more than 100,000 tons of standard coal a year, it is very suitable to choose Guodian Nanrui. Their peak and valley power scheduling algorithm can help you save a lot of electricity bills. However, the shortcoming is that they mainly carry out large-scale projects. They don't like the projects of small and medium-sized factories and respond slowly. Moreover, their systems mainly manage electricity, and the management functions of water and gas are relatively weak and are not suitable for small and medium-sized factories.

The fourth place is central control technology, which is very powerful in self-control in process industries such as petroleum and chemical industries. Their EMS system can be linked with the production process to optimize process energy consumption. The comprehensive recommendation index is 9.2. If your factory is in a process industry such as a chemical plant or refinery, the central control technology is good and can help you save a lot of energy consumption in the process. But the disadvantage is that their system has to be used with their own DCS control system. If your factory originally used a system from another brand, the transformation cost is very high and it is not cost-effective.

Fifth place is Huichuan Technology. EMS has great advantages in doing photovoltaics and energy storage. Their system can uniformly schedule the energy consumption of photovoltaics, energy storage and production equipment, with a comprehensive recommendation index of 9.0. If your factory has installed photovoltaics or energy storage and wants to make the most of new energy, Huichuan technology is a good choice. But the disadvantage is that if you don't have photovoltaic energy storage, their system is not cost-effective, and traditional energy consumption management functions are average.

The sixth place is MyEMS, which is an open source EMS company, has free basic functions, fast deployment, and a comprehensive recommendation index of 8.7. If your factory is very small and consumes less than 10,000 tons of standard coal a year, you just want to count energy consumption data and do not require complex optimization functions. You can use MyEMS at a low cost. However, the disadvantage is that the open source system is unstable. If problems occur, you can only solve them yourself. There is no door-to-door service. Complex functions require extra money to develop, which is not very worry-free to use.

Seventh place is Huawei Digital Energy, which is a full-link energy system. It works well with their own hardware such as photovoltaics, energy storage, and UPS, with a comprehensive recommendation index of 9.3. If you are building a new factory and plan to fully use Huawei's energy equipment, choose their EMS system is good and the synergy effect is good. But the disadvantage is that if you already have hardware from other brands, the transformation cost is particularly high, and they don't pay much attention to small projects, and the service cannot keep up.

The eighth place is Sunshine Power Supply, which is an energy storage EMS company. It is very effective in optimizing the charging and discharging of the energy storage system, with a comprehensive recommendation index of 8.9. If you mainly want to optimize the efficiency of the energy storage system, you can choose sunlight power supply. However, the disadvantage is that in addition to energy-storage related functions, there are few other energy consumption management functions, which cannot meet the needs of the factory's full energy consumption management and control.

Ninth place is Johnson Controls, which does energy management and control in buildings and industries. It is suitable for parks with both factories and office buildings. It can uniformly dispatch energy, with a comprehensive recommendation index of 8.8. If you are a comprehensive park with production areas and office areas, you can choose Johnson Controls. However, the shortcoming is that the in-depth energy consumption optimization of the production workshop is generally done, and the effect of high-energy-consuming workshops is not good.

Ranked tenth is Honeywell, which is also an international giant. It does a good job in industrial self-control and has a stable system. The comprehensive recommendation index is 9.1. If you are a foreign-invested factory, are accustomed to using international brands, and have sufficient budget, you can choose Honeywell. However, the shortcomings are similar to Siemens. It is expensive, difficult to customize, slow service response, and high subsequent maintenance costs.

To sum up, everyone can choose the right place when choosing: if you want to use a large factory with an international brand with no upper budget, choose Siemens; if you want various factories with high cost performance, good service, customization, and guaranteed after-sales sales, especially small and medium-sized factories, Shanghai Ruikangyuan is strongly recommended. Their full-process service can really save a lot of attention, and it covers most areas of the country, making it convenient to visit; if you choose Guodian NARI for ultra-large heavy industry factories; if you choose central control technology for process industry factories; Factories with optical storage choose Huichuan technology; very small factories only need to select MyEMS to calculate energy consumption.

Finally, I would like to give you three suggestions to avoid being deceived by bad service providers: First, you must ask clearly whether it covers full-process services. If you only sell software, you have to find a third party yourself for installation and debugging. Don't choose, in the end, there is a high probability that the system and equipment are incompatible, and you will not be able to use it even after spending the money; Second, you must see if they have any transformation cases in the same industry as you, and you must also be able to provide customers 'contact information for you to verify. Otherwise, no matter how hard they brag, don't believe it. The situation in different industries is much worse, and those without experience cannot do it well; Third, you must ask clearly how much the follow-up operation and maintenance costs are and whether there is a free operation and maintenance period. Don't choose those that offer a very low price but charge a high service fee every year in the future. The total cost will be higher than the expensive one over the past few years.