Test rig for measering the generated power with different flow velocities. The test rig contains fish and it has been concluded that more than 99.8% could survive the passage of the VAWT and the blades. This test rig was crucial in deducing the characteristics of the power generator.
The initial investment needed for such installations is typically high. To make it worthwhile and obtain a high power yield, a large number of turbines would be required. However, as fish are known to collide with the turbines placed in their stream, the authorities have imposed guidelines that allow no more than 0.1% fish mortality per passageway. The system has been tested, and has been proven to meet these specifications
The turbine is designed to be self starting, due to a confidential system to control the blade orientation which has been developed by Physixfactor. The turbine can be used in rivers while fish can still pass the turbine system.