Why we should choose Acrel HOME EMS PV System?

1. Background and Requirement

The global trend of photovoltaic and energy storage integration is obvious, and the household energy storage market has great potential. Especially in the context of the continuous development and increased penetration of PV, household photovoltaic and energy storage integration has become the mainstream development direction. The main factors for the rise of household photovoltaic and energy storage systems include the following:

Fluctuation of electricity prices: Changes in energy prices trigger increases in electricity prices.

Increased awareness of environmental protection: Household photovoltaic storage systems provide a clean, renewable source of energy.

Policy support and subsidies: Many countries and regions provide tax breaks, subsidies and other incentives.

Construction cost reduction: The cost of photovoltaic panels and batteries has been significantly reduced, making household photovoltaic storage systems more economical and affordable.

Technological maturity: The efficiency of photovoltaic panels is improved, the life of energy storage batteries is extended, and the system is more reliable and efficient.

Household solar-storage systems are experiencing rapid development in the international market, especially in countries and regions with favorable policy environments, high electricity prices, and strong demand for renewable energy. By 2023, Europe's solar power generation capacity has exceeded 200GW, and the installation of household energy storage systems has exploded. It is predicted that by 2025, the installed capacity of household solar-storage systems in Europe will reach 12.8GWh.

Home users' demands for solar storage systems mainly include:

1) Respond to dynamic electricity prices

You can decide for yourself whether you prefer to consume electricity when electricity prices are lower, and adjust your consumption behavior to significantly reduce your electricity costs and gain better control over your household electricity bill.

2) Peak shaving and valley filling, smoothing electricity load, and obtaining profits through peak-valley price difference

In some areas, household users can use the solar storage system to charge when electricity prices are low, use the stored electricity during peak hours when electricity prices are high, or even sell electricity to the grid to achieve arbitrage.

3) As an emergency power source when the power supply is unstable

Household users hope to reduce their dependence on the power grid by installing a solar storage system. Especially in the event of a power outage or unstable power grid, the solar storage system can be used as a backup power source to ensure the basic electricity needs of the family.

4) Respond to the government's requirements for environmental protection and carbon emissions and the subsidy policy for new energy

Many household users attach importance to environmental protection and hope to reduce their carbon footprint by using clean energy. The photovoltaic storage system does not produce greenhouse gas emissions, which just meets this demand.

Household users who invest in photovoltaic storage systems can also enjoy the photovoltaic storage system installation subsidies, tax exemptions or other incentives provided by governments of various countries.

5) Effectively improve the self-use rate of photovoltaic power generation built in the early stage

Overseas household photovoltaic power generation has been maturely used ten years ago. Since the time of photovoltaic daily power generation and household load application is not completely matched, household users hope to use it in conjunction with energy storage to achieve full self-sufficiency of electricity demand.

2. Acrel Home EMS Solution

Acrel's Home EMS household photovoltaic storage system solution can perform real-time monitoring, energy metering, energy consumption analysis, diagnostic alarms, panoramic analysis, orderly management and strategic control of PV, energy storage and loads in the home, achieving efficient, reliable, safe and orderly household electricity use.

The household energy controller reads the operating data and status of household meters, solar storage inverters, smart homes and other devices through RS485, Ethernet, WiFi and other methods, and supports Modbus RTU, Modbus TCP, MQTT and other communication protocols. The controller analyzes the power generation and consumption data and the power consumption period to achieve optimal regulation and optimal economic operation of household energy, and sends system data to the cloud platform through WiFi/4G/Ethernet to achieve monitoring and management of multiple household energy. At the same time, the household energy controller can store data locally when the network fails, and continue to upload data from the interrupted location when the network is restored to ensure that the server-side data is not lost.

Home EMS provides two access methods: WEB and APP, which are used to view the real-time status of PV, energy storage, and loads, monitor system alarms, count energy consumption and revenue, and adjust operating parameters and control strategies. Data can be viewed and settings adjusted through the mobile phone APP.

3. The benefits for HOME EMS User

1) Improve photovoltaic consumption: Real-time regulation of energy storage charging and discharging. When household load is low, it can be used as a reservoir for the surplus electricity of photovoltaic power generation; when the load is high and photovoltaic power generation is insufficient, it can be discharged to reduce household electricity bills;

2) Peak-valley price difference arbitrage: Use the peak-valley price difference of the power grid to help household users gain benefits, charging at valley prices and discharging at peak prices;

3) Avoid excessive electricity bills: When household electricity consumption is at its peak, start energy storage discharge to reduce household electricity expenses. For example, when the reserve power is insufficient, advance warnings can be issued through APP push and SMS push;

4) Household reserve power in emergency situations: Since the power grid supply in most countries is not stable and power outages are prone to occur, energy storage batteries always have emergency power to achieve seamless operation of household electricity consumption;

5) Environmental protection data statistics: Governments of various countries are paying more and more attention to environmental protection. For future carbon emission subsidies, the contribution of household green electricity use to green environmental protection can be seen on the APP.