The energy self-sufficient stormwater holding tank from Festo uses solar and wind energy to power a control unit and operate pneumatic actuators, controlling excess water from the sewer system during heavy rains and relieving pressure on treatment plants. When treatment capacity returns, gate valves on the tank can be remotely opened to drain the water. The pneumatic drives are corrosion resistant and can be used in explosive atmospheres.
The use of sustainable energy enables collection tanks to be located in areas without utility power supply and saves on the cost of grid connection.
