In the generation of hydroelectric power, water is collected or stored at a higher elevation and led downward through large pipes or tunnels (penstocks) to a lower elevation; the difference in these two elevations is known as the head. At the end of its passage down the pipes, the falling water causes turbines to rotate. The turbines in turn drive generators, which convert the turbines mechanical energy into electricity. But the main shortcoming here is the falling water from the penstock is used only once to generate mechanical energy at the end of passage down the pipe. This project is about building a new hydroelectric power turbine by modifying the penstock in order to uses the falling water at full capacity. This is done by making the penstock vertical instead of angled pipe. Inside the vertical penstock there is helical structure that is used to direct falling water downward and in the center of the helical structure there is a massive shaft attached to the helix fixed together. The shaft is also connected to an outside cylinder on the top and bottom side that also acts as a house for the helical structure. The cylindrical house structure and the center shaft are connected with a bearing system so that the shaft can rotate. When water enters in to the cylindrical house which is the new penstock from the top side, it will come in contact with the helical structure and it will travel downward on the surface of the helical structure. As the water kept going downward it will come in contact with series of fixed obstacles mounted on the helical structure. When the water reaches the first obstacle it generates some angular force on the obstacle which will make the center shaft rotate. As the water keep going in it will elevate until the maximum height of the first obstacle and head downward to the next obstacle via the route of the helix. And this mechanism is repeated until the bottom. As the water accumulates on the entire obstacle the center shaft will rotate with high torque and this way the water is used in a cumulative way instead of being used once to generate mechanical power.