In depth interpretation of the 'wall to wall electricity sales' policy: How can owners of solar energy storage and charging earn an extra share of electricity bills?

Introduction:

During the day, photovoltaic power generation meets self use needs; as night falls, energy storage systems absorb electricity at low prices, and surplus electricity can be sold to nearby factories. This is a vivid practice of the 'electricity sharing economy'. In the past, such operations were considered illegal, but now the country iswithhugeThe PowerPush it onto the real stage. ”

Recently, the National Development and Reform Commission officially included it in the Basic Rules of the Electricity Spot MarketSelling electricity through partition wallsThis concept grants distributed energy sources, such as solar energy storage and charging stations, the authority to bypass traditional power grids and directly sell electricity to surrounding users. This move is known in the industry as the "last precious puzzle in the blueprint of electricity marketization reform".

Microgrid+Policy Dividend: The Golden Combination of Light Storage and Charging：

Why do some owners earn 30% more electricity bills by selling electricity, while others cannot even apply for qualifications, even though they are both photovoltaic charging stations? The secret lies in whether it is equipped with a smart microgrid system. '

2025In the year, with the National Development and Reform Commission fully opening up the pilot program of 'wall to wall electricity sales', photovoltaic storage and charging projects with microgrid management capabilities are enjoying excess dividends.withAnkerui EMS3.0 systemTaking the example of a photovoltaic charging station that has landed in Suzhou:

Efficiency improvement:By intelligently scheduling photovoltaic, energy storage, and grid power,Wall mounted electricity sales efficiency increased by 40%

Save labor:Automatic settlement of blockchain electricity meters, saving manual meter reading costs (saving 50000-80000 yuan per year)

Policy support:Compliant with the latest 'plug and play' standard of State Grid,fastComplete transaction qualification approval

1 Policy interpretation: Key threshold for selling electricity through partition walls

1.1 Why are technical hard indicators difficult for ordinary systems to meet?

The National Energy Administration has put forward three core technical requirements for wall mounted electricity sales:

0.2 second power response:Traditional manual adjustment has delays, while Ankerui EMS3.0 achieves automatic frequency regulation through AI algorithms. In a sudden load fluctuation in an industrial park in Zhejiang, it was tested to be 42% faster than competitors.

Measurement error ≤ 1%:Ordinary electric meters often have an error of over 3% due to harmonic interference, while Ankerui's built-in blockchain smart electric meter adoptsOptimizeThe chip compresses the error to 0.5% and synchronizes the data directly with the power trading platform, eliminating settlement disputes.

Mandatory requirements for preventing backflow:The new regulations in 2024 specify that reverse power transmission will face fines. EMS3.0 'Power Directional Lock' technology automatically switches to energy storage charging or wall sales mode when there is excess photovoltaic power generation, avoiding violations from the root.

1.2 The 'passport' of local policy dividends microgrid system

Jiangsu requires access to the provincial demand response platform, and EMS3.0 comes pre installed with standardized communication protocols to complete platform integration.

The subsidy application in Guangdong requires a 15 minute power generation forecast. The system trains an AI model based on meteorological data and historical power generation curves, with a prediction accuracy of 92%, far exceeding the industry average.

The pilot project of 'Green Power Plug and Play' in Shanghai Free Trade Zone, equipped with EMS3.0, relies on the pre-set template of 'Shanghai Distributed Trading Compliance * * *' and has an approval cycleSignificantly shortened.

II The Hidden Trap of Policy Implementation in EMS3.0: How to See the Tricks and Dismantle Them

trap1Spot market price dip

A solar energy storage and charging station in Shandong suffered losses in selling electricity due to the failure to predict fluctuations in electricity prices.

EMS3.0 countermeasure: Built in 'Electricity Price Sand Table' simulation system, combined with historical data and weather forecasts, recommends * * electricity sales periods（according toThe system prompts that the premium for selling electricity at 2pm in July can reach 1.2 yuan/kWh.

trap2Carbon asset loss

The green electricity attribute of selling electricity through partition walls can be used to develop carbon assets, but 90% of the owners have not declared it.

EMS3.0 Easter egg function: automatically generates power generation data packets that comply with VCS standards, andmultipleDirect connection to the Carbon Exchange API (a certain customer earns more through this)186000 yuan/year).

III Ankerui EMS3.0 Microgrid Solution

3.1 Solution Network Architecture

On site equipment layer:Contains various instruments and devices for collecting real-time data in microgrids，The data covers distributed power sources, municipal power sources, energy storage systems, charging facilities and loads, etc；

Network communication layer:Composed of intelligent gateway and network devices, responsible for data transmission，The intelligent gateway collects on-site data, performs protocol conversion, and transmits it to the platform management layer through the network；

Platform management team:Includes servers for data processing, analysis, optimization scheduling, and visualization display，Realize real-time monitoring, control strategy formulation, and execution of microgrids.

3.2 Core Value of Solution

Promote deep optimization of energy structure：Actively introducing renewable energy (such as solar energy, wind energy, etc.) and clean energy (such as nuclear energy, biomass energy, etc.) aims to significantly reduce excessive dependence on fossil fuels and effectively reduce energy costs. At the same time, by fully utilizing the advantages of energy storage technology and smart grid technology, the flexibility and configuration of energy scheduling can be achieved, thereby further improving energy utilization efficiency.

Building a comprehensive energy cost management system:Through comprehensive real-time monitoring and in-depth analysis of energy usage, accurately identify energy waste links within the enterprise, and develop a series of targeted measures based on thisSignificant effectofEnergy saving measures. In addition, by optimizing procurement strategies and actively negotiating energy contracts, we strive to minimize energy procurement costs while ensuring the quality of energy supply.

Building a diversified energy supply system:Actively introducing various energy supply methods such as distributed energy and microgrids to enhance the flexibility and reliability of energy supply. In the event of a power grid failure, it can quickly switch to the backup energy supply system to ensure the continuity and stability of enterprise production are not affected.

Strengthening the construction and maintenance of power grid infrastructure:Increase investment in power grid infrastructure and focus on improving its carrying capacity and disaster resistance. At the same time, strengthen the daily inspection and maintenance of power grid equipment, timely discover and properly handle potential safety hazards, and ensure the smooth operation of the power grid.

Establish a scientific carbon emission management system:By clarifying carbon emission targets and plans, comprehensively monitoring and evaluating the carbon emissions of enterprises, and promptly identifying and correcting issues of carbon emissions exceeding standards. At the same time, actively participate in carbon emission trading and carbon financial product innovation to achieve effective management and control of carbon emissions.

Deepen demand side management:By guiding enterprises to adjust production plans and electricity demand reasonably, effectively balancing the relationship between electricity supply and demand, and reducing fluctuations in electricity load. At the same time, actively promoting demand response technologies and products, encouraging users to reduce load during peak periods and increase load during off peak periods, thereby improving the stability and economy of the power grid.

Optimize power grid scheduling and operation strategy:Introduce advanced power grid scheduling technology and algorithms to achieve intelligent and efficient power grid scheduling. By real-time monitoring and accurate prediction of power load, scientifically and reasonably arranging power generation and transmission plans, ensuring the stable and efficient operation of the power grid.

4 Ankerui EMS3.0 Smart Microgrid System Highlights Features

4.1 Real time monitoring

The monitoring system interface of the microgrid energy management system includes the system main interface, which includes the microgrid photovoltaic, wind power, energy storage, charging piles, and overall load composition, including revenue information, weather information, energy conservation and emission reduction information, power information, electricity quantity information, voltage and current situation, etc. According to different needs, charging, energy storage, and photovoltaic system information can also be displayed.

4.2 Photovoltaic Interface

Display information on photovoltaic systems, mainly including monitoring and alarm of the operating status of inverters on the DC and AC sides, statistics and analysis of inverter and power station power generation, monitoring and analysis of grid connected cabinet power generation, statistics of annual effective utilization hours of power station power generation, statistics of power generation revenue, carbon emission reduction statistics, monitoring of irradiance/wind power/environmental temperature and humidity, simulation and efficiency analysis of power generation; Simultaneously display the total power, voltage and current of the system, as well as the operational data of each inverter.

4.3 Energy storage interface

Display the energy storage installed capacity, current charging and discharging capacity, revenue, SOC change curve, and electricity change curve of this system. Data display and control of PCS and BMS.

4.4 Wind Power Interface

Display information on wind power systems, mainly including monitoring and alarm of the operation status of the DC and AC sides of the inverter control integrated machine, statistics and analysis of the power generation of the inverter and the power station, statistics of the annual effective utilization hours of the power station's power generation, statistics of power generation income, carbon reduction statistics, monitoring of wind speed/wind speed/environmental temperature and humidity, simulation of power generation and efficiency analysis; Simultaneously display the total power, voltage and current of the system, as well as the operational data of each inverter.

4.5 Charging Station Interface

Display information about the charging station system, mainly including the total power consumption of charging stations, the power and electricity consumption of AC and DC charging stations, electricity costs, change curves, and operational data of each charging station.

4.6 Power generation forecast

Based on historical power generation data, measured data, and future weather forecast data, predict the short-term and ultra short term power generation of distributed power generation, and display the qualification rate and error analysis. According to power prediction, manual input or automatic generation of power generation plans can be carried out, which facilitates users to centrally control the new energy generation of the system.

4.7 Strategy Configuration

The system should be able to set the system operation mode and configure different control strategies based on power generation data, energy storage system capacity, load demand, and time of use electricity price information. Such as peak shaving and valley filling, cycle planning, demand control, anti backflow, orderly charging, dynamic expansion, etc.

4.8 Real-time alarm

Equipped with real-time alarm function, the system should be able to remotely signal the starting and closing of inverters and bidirectional converters in each subsystem, as well as issue alarms when internal protection actions or accident trips occur. It should be able to display alarm events or trip events in real time, including the name of the protection event and the time of the protection action; And it should be able to notify relevant personnel in the form of pop ups, sounds, text messages, and phone calls.

4.9 Power Quality Monitoring

Continuous monitoring of the power quality of the entire microgrid system, including steady-state and transient states, enables management personnel to grasp the power quality situation of the power supply system in real time, in order to timely detect and eliminate unstable power supply factors.

4.10 Network Topology Diagram

The system supports real-time monitoring of the communication status of various devices connected to the system, and can fully display the entire system network structure; It can diagnose the communication status of equipment online, and automatically display the faulty equipment or component and its faulty location on the interface when network abnormalities occur.

4.11 Fault recording

When the system malfunctions, it automatically and accurately records the changes in various related electrical quantities before and after the fault. By analyzing and comparing these electrical quantities, it plays an important role in analyzing and handling accidents, determining whether the protection is operating correctly, and improving the safe operation level of the power system. Among them, a total of 16 fault waveforms can be recorded, and each waveform can trigger 6 segments of waveform recording. Each waveform recording can record 8 cycles before the fault and 4 cycles after the fault, with a total recording time of 46 seconds. Each sampling point recording should include at least 12 analog waveforms and 10 switch waveforms.

4.12 Accident Remembrance

It can automatically record all real-time scanning data before and after the accident, including switch position, protection action status, remote measurement, etc., forming the data basis for accident analysis；

Users can customize the initiation event for accident recall, and store events when each event occursthereforeTop 10A scanRelevant point data for the cycle and 10 scanning cycles after the accident. The data points for initiating events and monitoring can be used byHousehold confirmation andMake arbitrary modifications.

5 Recommended hardware products

5.1 Monitoring instrument products

5.2 Protection of Measurement and Control Products

5.3 Power Quality Products

VI Conclusion

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