30kWh Solar-Wind Hybrid System for Shanghai Villa

Ⅰ. Customer case

Customer Background: Mr. Li, the owner of a single-family villa in Shanghai, is equipped with a constant-temperature wine cellar, an intelligent fish tank and a central air conditioning system. His annual electricity bill exceeds 50,000 yuan. In 2024, due to frequent typhoons causing multiple power outages, the fish tank creatures suffered heavy losses. Therefore, a 24-hour power cut-off solution was sought.

Customized solution

Capacity selection: 30kWh lithium battery energy storage system (capable of meeting the basic load for more than 8 hours at night);
Energy mix:  Highjoule deploys 8kW telescopic photovoltaic panels and 5kW vertical-axis wind turbines on the roof for customers (complementing wind and solar power to make up for the gap on rainy days).

Intelligent management: Connect to the intelligent EMS platform to achieve automatic dispatching of the four sources of photovoltaic, wind power, power grid and energy storage, with charging during off-peak hours and discharging during peak hours.

Customer feedback effectiveness

After installation, it generated 19,000 kilowatt-hours of electricity throughout the year, saving 16,000 yuan in electricity bills. The fish tank was no longer damaged due to power outages. Before the heavy rain, the photovoltaic panels automatically retracted, and there was no need for people to climb the roof anymore!

Ⅱ. capacity positioning: The term “household” cannot overshadow commercial potential

Although the product is labeled “for household use”, the capacity design of 10 to 30kWh far exceeds the average daily electricity demand of 10 to 20 KWH for an ordinary household, making it more suitable for the following scenarios:

Technical explanation: A 30kWh energy storage capacity is equivalent to supporting three 3-horsepower air conditioners to run continuously for 8 hours, far exceeding the basic needs of a household. It is actually a pseudo-home design for small commercial scenarios.

III. Technological Victory: Four Innovative Points to Address Industry Pain Points

1. Wind-solar hybrid: 24-hour stable power supply guarantee

Photovoltaic power generation is the main method (with an average of 4 hours of efficient power generation per day), and wind power is used for energy replenishment at night (it can be started when the wind speed is 3m/s). A customer case of a homestay in Yunnan Province was tested and found that on rainy days, wind power contributed over 40% of the electricity, and the power outage rate in guest rooms was zero.

2. Telescopic photovoltaic panels, flexible space and safe application.

The hybrid power generation system of photovoltaic and wind power, equipped with retractable photovoltaic panels, automatically retracts when encountering strong winds or hail, reducing the damage rate by 90% compared with traditional fixed equipment. Shanghai villa case: The roof area is limited. The telescopic design enables the photovoltaic panel to expand with an efficiency of 17.1%, and when retracted, it only occupies 0.5 square meters.

3. Intelligent Temperature Control: The “Guardian” of Lithium Battery Life

In the hybrid power generation system of photovoltaic and wind power, the capacity of lithium iron phosphate batteries decays by 50% below -10℃. This system adopts: liquid cooling cycle (adaptive to the environment from -30℃ to 50℃). Zoned heating technology (cell temperature difference <2℃) Compared with similar products, the battery cycle life has been increased to 6,000 times (the industry average is 4,500 times).

4. Power and environmental monitoring: Comprehensive protection from fire protection to anti-theft

The hybrid power generation system is equipped with four levels of safety protection, including arc detection (0.5-second power-off), smoke sensing, water leakage alarm and access control linkage. The actual case technology shows that the product can achieve zero safety incidents for three years.

Ⅳ. Market Value: A Dual Breakthrough in economy and Environmental Protection

In the villa scenario, the initial investment for a 30kWh system is approximately 180,000 yuan. It saves 16,000 yuan in electricity costs annually plus a government subsidy of 30,000 yuan. The payback period is less than 7 years. After 7 years, it is equivalent to uninterrupted free electricity usage. The hybrid power generation system of photovoltaic and wind power is applied in the construction site. The monthly fuel consumption cost of the diesel generator is 24,000 yuan. After the photovoltaic storage system replaces it, the cost drops by 60%

From an environmental perspective, a single 30kWh system can reduce carbon emissions by 19 tons per year, which is equivalent to planting 1,000 trees. Participating in the peak-valley dispatching of the Virtual Power Plant (VPP) brings an additional annual income of over 1,200 yuan. While achieving economic benefits, it also responds to the hobbies and demands of environmentalists.

V. The Future is Here: The Extension of the Energy Ecosystem from Households to Communities

This product is promoting the popularization of the “producer and consumer” model, from household energy centers to community microgrids: for instance, in the Xiongan New Area project, DC electrical appliances are directly connected to energy storage cabinets, eliminating AC/DC conversion losses and increasing energy efficiency by 15%.

Carbon asset appreciation: The electricity generated can be exchanged for carbon credits and enjoy the national installation and subsidy policies. By 2025, China’s household savings market is expected to exceed 100 billion yuan, and such highly integrated products will become the “standard equipment” for villa and homestay owners.

Conclusion: It is not only for household use but also the starting point of the energy revolution in small businesses
When the retractable photovoltaic panels automatically retract before heavy rain, when lithium batteries are precisely protected by the temperature control system in the cold night, and when wind power quietly takes over the power supply on rainy days, this wind-solar energy storage system has tranved its original positioning as a “backup power source” and become the cornerstone of a quality life and commercial energy conservation. It proves through technological innovation that green energy is not only about environmental protection, but also points to a future of free, stable and highly controllable energy use.

Homestay/villa owners can prioritize the assessment of “power outage losses from important loads” (such as fish tanks and wine cellars), while small merchants need to calculate the price difference between peak and off-peak hours. These pain points in scenarios are precisely the breakthrough points for wind and solar energy storage cabinets.