The demand on all kinds of energy will increase in the next 20 years as high as 50%, 100%, 200%, 300%, 400%?

The demand on energy will increase by400% in the next20 years.

it must be400 % in the next20 years.

The most recent study mentioned 300% increase in the next 15 years with  $48 Trillion investments in the next 20 years. The 400% increase is visible on all kinds of energy specially solar, oil & gas, nuclear, etc.

I agree with the most of you, it will increase as high as400%

It will increase by400% 

I think so

I also think it will increase about400% in the next20 years... considering that the3rd world countries have not developed the need for large energy usage as the US or Europe has ...

It is important that we find new with lesser impact on the environment energy sources

I do not know

But answers colleagues scared

Is man turning into a monster

What we leave for future generations

The form of the land after20 years

It is expected to more than  Double.

i think it should be doubled .....

I voted up the answers, I really didn't have an idea of it.