S4 innovates with its new patent
S4 SunFlow Multifunction Ballasted Tank for Photovoltaic Panels
Water Harvesting, Hot Air Management & Unmatched Versatility
General presentation
The S4 SunFlow ballasted tank is a unique 3-in-1 solution on the market, designed to maximize the efficiency and versatility of photovoltaic installations, whether agricultural, industrial, or residential. Engineered to fit all panel sizes available, it combines strength, modularity, and environmental intelligence.
Beyond supporting your PV panels, this innovative tank collects and stores rainwater, channels hot air generated by the panels’ cap effect — and can even be used as a storage container or animal feeder.
Universal compatibility
• Designed to fit all photovoltaic panel sizes, standard or large format.
• Connectable in series: tanks act as communicating vessels for uniform water and air management across large surfaces.
Double water harvesting
• Captures runoff either from the roof or directly from the panels.
• In temperate zones, up to 1,200 liters per panel per year can be collected; in arid zones, up to 500 liters per year can be harvested from occasional rain.
• Stores water for irrigation or technical needs.
With the “AirSunFlow” option: smart hot air management or air extraction
• Hot air behind the panels can be routed into a building, garage, workshop, or greenhouse to preheat it, reducing heating needs.
• The system can also be reversed to extract hot or stale air from the building, providing natural ventilation that cools both the room and the panels.
• This hot air can also be used to speed up drying of agricultural products (hay, cereals, fruits, vegetables), providing an easy and economical way to reduce moisture in harvests or stocks.
Integrated storage compartment
Secure storage space under the panels for tools, equipment, or technical accessories, optimizing workspace organization.
A solution tailored to agricultural and industrial challenges
• Agriculture: drip irrigation, crop hydration, crop drying, animal feeding (feeder/drinker).
• Buffer storage: reduces losses during irregular rainfall periods and ensures controlled water availability.
• Industry: cleaning, cooling machinery, irrigating green areas, fire-fighting backup.
• Circular economy: values rainwater as a free resource to lower industrial water bills.
Residential use
• Perfect for individuals looking to harvest rainwater for a garden or vegetable patch, or channel hot air to heat a room, garage, or basement — or conversely, extract air to improve ventilation.
Key benefits
- Optimized water resource management, essential during droughts.
- Enhanced solar energy utilization with added environmental function.
- Reduced water and energy costs.
- Sturdy, modular, and easy-to-install design.
- Suitable for all types of sites: farms, greenhouses, industries, remote housing.
- Thermal comfort and drying possibilities thanks to reversible ventilation.
Typical applications
- Agricultural operations (crops, greenhouses, livestock, crop drying).
- Industrial and logistics buildings with solar rooftops.
- Homes and remote sites.
- Areas requiring careful water and energy management.
With the S4 SunFlow multifunction ballasted tank, turn your photovoltaic installation into a complete, efficient, and sustainable solution for water and energy management, while improving comfort, performance, and agricultural uses.
