# Producing Power

1. Jan 3, 2014

### gianeshwar

Suppose along a river which is descending a mountain.On the river there are 10 hydropower stations A,B,C......J suppose at distances of 10km each.Now each station producees 100MW Power.So we get 1000MW.
My Question is 'In this way can we produce as much power as we require by increasing number of stations on the same river at our discretion?'

2. Jan 3, 2014

### Filip Larsen

As you can imagine, each station is extracting energy from river, so somehow something must be "adding" energy to the river before it can be extracted. Can you think of what that "something" may be? Hint: you already referred to it in your post, but perhaps without thinking about exactly what it means in this situation.

3. Jan 3, 2014

### gianeshwar

I understand that potential enery and kinetic energy as well of water is getting converted to rotational energy of turbine wheels at each stage.But still can we get energy at our discretion?

4. Jan 3, 2014

### TRLWNC

Depends on the overall fall you have available.

5. Jan 3, 2014

### gianeshwar

So in overall fall of 1000 metres suppose we can install maximum numver of plants!

6. Jan 3, 2014

### Staff: Mentor

One turbine for the full drop produces twice the power of 2 turbines with half drop, and so on. The total energy available from the drop does not change by adding more turbines along the way.

In fact, there will be some optimum number of stations that minimize the losses in the conversion, but the total power output will still have a maximum that is a bit less than the total energy stored in the water drop.

7. Jan 3, 2014