1. Peak-valley arbitrage - Since the maximum price difference between daytime and nighttime electricity prices is about 0.9 yuan/kwh, the energy storage cabinet is charged during the night valley period and discharged during the day peak period, and the price difference is used to make profits; taking a cabinet with a capacity of 200 kWh as an example, it is estimated that the annual profit in Shanghai is 75,201 yuan.

2. Policy subsidies - Local governments have issued policies to encourage energy storage and clean energy, and provide subsidies of about 0.3 yuan/kwh for investment in new energy storage industries (subsidies fluctuate with the policies of each region).

3. Demand-side response - by responding to the call of the power grid, adjusting electricity consumption behavior to obtain economic compensation, such as reducing electricity consumption during peak hours to obtain subsidies, starting from 2.4 yuan/kwh;

4. Tax and fee concessions - according to the policies of local tax bureaus, contract energy management projects are exempted from value-added tax and corporate income tax is levied at half the rate of 25% (specific details are subject to local tax policies);

5. Capacity management - dynamically expand the capacity of enterprises with tight energy capacity, and can also be used as a backup power supply when electricity is tight.

Digital twin refers to the use of digital technologies (such as artificial intelligence, big data, and the Internet of Things) to conduct VR modeling, simulation, and optimization of hospitals, grain depots, sewage treatment plants, or enterprises, so as to achieve real-time, refined, and intelligent management of their integrated energy management systems.

Project case: A future grain warehouse holographic smart management project in Zhejiang Province completed the docking of business data with the "Zhejiang Granary" in-and-out system, the docking of the positioning and measurement system, and the Internet of Things system, and dynamically presented the information control of food security in the digital twin of the grain warehouse.