Photovoltaic: 3 kW

Energy Storage: S2400 (7.2 kWh, 3 battery modules)

With electricity bills climbing to new highs, Mr. Zhang and his family—careful planners living in the city—have long been searching for a smarter and more sustainable way to use energy. Their needs were simple: plenty of power for appliances during the day, a warm and well-lit home at night, and—most importantly—an end to the shock of monthly electricity bills.

Sunpura’s tailored medium-size home solar-plus-storage solution delivered exactly what they wanted.

A 3 kW high-efficiency PV system, like a “private sun” on the roof, quietly harvests sunlight and continuously feeds clean electricity into their home. Paired with a 7.2 kWh intelligent energy-storage system—an “energy steward” that never gets tired—the system stores excess daytime energy and releases it at dusk or during high-tariff periods.

But the system’s intelligence goes far beyond “self-consumption.”

Fully integrated with dynamic electricity tariffs, it truly performs “peak-shaving and valley-filling.” During low-price hours, it automatically charges the battery; when electricity prices surge, it switches to battery power to avoid expensive grid usage.

This means Mr. Zhang’s family doesn’t need to change their lifestyle at all—the system quietly performs “energy arbitrage” in the background, maximizing the value of every kilowatt-hour. As a result, they not only eliminated electricity-bill anxiety but also became active participants in the energy market, enjoying both financial freedom and an elevated quality of life brought by smart technology.