In the current era of frequent extreme weather, can household photovoltaic systems become "power fortresses" when the power grid is paralyzed? The answer is yes, but two core conditions must be met: energy storage configuration and system resilience.

If the photovoltaic system is not equipped with energy storage batteries, it will automatically shut down due to safety mechanisms during power outages. The "photovoltaic+energy storage" system equipped with lithium iron phosphate batteries can overcome this limitation. For example, a 5-kilowatt photovoltaic system paired with a 10 kilowatt hour battery can meet the basic electricity needs of households for 8-10 hours in extreme weather conditions (such as lighting, refrigerators, medical equipment). If a high-capacity battery (such as 30 kWh) is chosen, coupled with intelligent load management, it can even support 2-3 days of emergency power supply.
2、 Technical challenges and responses to extreme weather conditions

Strong winds and hail:

Typhoons and sandstorms may damage photovoltaic panels or brackets. Zhongling Xingneng and other enterprises ensure stable operation of the system in extreme environments through military grade wind resistant design (resistant to 14 level winds) and aviation grade wind simulation verification.

Rainstorm and flood:

Choosing an IP65 protection level inverter and energy storage device, paired with waterproof rubber plugs, sealing rods, and other accessories, can prevent equipment from being damaged by water immersion.

Blizzard and low temperature:

Snow cover will reduce power generation efficiency and requires regular cleaning; In low-temperature environments, battery capacity may decrease, and performance can be maintained through heating and insulation measures.
3、 Policy and Cost: Dual Support for Feasibility

In 2025, many regions in China will provide subsidies for distributed photovoltaic and energy storage projects, with Guangdong offering a maximum subsidy of 3 million yuan for distributed photovoltaic. Taking a villa in Zhejiang as an example, after installing the "photovoltaic+energy storage" system, not only can daily electricity self-sufficiency be achieved, but also new energy vehicle charging and household equipment operation can be guaranteed during typhoon power outages. The initial investment is about 50000 to 80000 yuan, and after adding subsidies, the investment payback period can be shortened to 8-10 years.
4、 Scene adaptation and operation suggestions

Priority equipment protection: prioritize supplying power to medical equipment, lighting, and communication equipment, and reduce the use of high-power electrical appliances.

Intelligent management system: Real time monitoring of power consumption through an APP, dynamically adjusting power consumption strategies.

Regular maintenance: Before and after extreme weather, check the cleanliness of components, the stability of brackets, and the health status of batteries.

conclusion