·Huge kite generates power, new breakthrough on renewable resources

he Guardian reports that kite flying is an ancient child game for most people, but a Holland scientist made a huge kite, generating power and successfully generated 10kw of electricity recently. That is a sign of a new breakthrough in scientific research on renewable resources. 

The scientists are from the Delft University of Technology, Netherland, a large-scale industrial technology university with high popularity in Europe, also known as “Massachusetts Institute of Technology in Europe”. The kites flew by the scientists are 10 square meters big and it generated 10kw electricity continuously in the sky, which is enough for the consumption of 10 families. The experiment of kite power is successful and the researchers plan to make more complicated experiment based on it. They name this experiment “Laddermill”. As per the plan, several huge kites will fly together to generate power and make 100-mega watt to meet the need of 100,000 families.
The previous astronaut Wubbo Ockels, who is responsible for the Laddermill, says Laddermill is called a power generator in the air. The kites are flew one thousand meters or higher above the ground so that to capture the wind for power generation. This power generation is very cheap. The wind in a high altitude carries energy of several hundred times than the wind on the ground. Putting kiteshigh on the list to generate power is a good way to utilize the nature. 
Mr Ockels is not alone while he researches and works. His behavior has been acknowledged by some organizations years ago. Google charity (Google.org) invested 10 million dollars to professor Ockels’partner, Makani Kite Power Generation Company to reward their excellent contribution on the utilization of renewable energy. Wind power is cheaper than coal energy, and the common goal of professor Ockels’team and Makani Company is to set the kites as high as possible, because the wind energy in a much higher location is comparatively more sufficient and stable.
Ken Caldeira, a climatologist in Stanford University predicts that the overall reservation of wind energy on the earth is 100 times of the global need for power . But most of this energy is located at high altitude.  It is impossible to build a standard turbo wind generator in the high altitude, but it is easy for a kite to reach high. In addition, GB,Netherland,Ireland and Denmark are suitable for kite power. For instance, it is economically easier to build a kite generator than a turbo wind generator anywhere in GB.
The principle for kite to generate power is very simple. While a kite is connected through a special cable with a generator on the ground and the kite is flying in high air, the personnel on the ground controls the kite to go up and down repeatedly once the kite reaches the highest position. The movement of the kite will eventually make the generator work. Allister Furey from the University of Sussex developed a computerized kite power generation pattern, which can optimize the kite power generation. Wubbo Ockels made use of this pattern and was able to control well several huge kites in the sky. When one kite is going up, the other is going down, like a glider. Wubbo Ockels predicted that kite power cost per kilowatt is almost the same as coal generation cost, less than 4 pence. It is not cheaper, but it is very attractive ecologically since the generation costs no pollution, and kite power cost is 50% less than a normal turbo wind generator.
Quite a few companies has adopted kite power generation.  An Italian company KiteGen plans to fly 4 kites with 500 square meter area each. A speaker from Wind Power Association of GB acknowledged wind power positively. It is said wind power makes better use of jet streams and wind energy in high altitude, and therefore this technology is of great potential.