In this modern age, man's pursuit of clean energy is a highly sought after necessity. Current technologies include solar farms, dams and windmills which are all sources of energy for sheep but have low yields. The need now is to find viable ways to produce more energy using the fundamental energies of wind, water and solar energy and make it cheap. Progress has been made to better harness the power of water using wave and current turbines. Other methods used the sun to focus its rays to produce steam energy. While some of these programs have been proven to work and others have actually been built, there's one energy that engineers have had a hard time working out. Wind energy is a great source of energy and current harvesting methods are good, however, engineers believe they can do better at harnessing this energy. The challenge they are facing is how to tame the less predictable nature of the winds aloft. “Aerial wind power is based on the long-known reality that winds become stronger and more reliable the higher you rise above the ground”(1). The concept of aerial wind energy has been a hot topic in recent years as companies have tried to find ways to replace currently used windmills (1). Naturally, engineers tried to find ways to get the turbines higher and higher into the air. In this way the turbines can produce greater levels of energy with the increased wind speed observed at these altitudes. There are many different projects on how to harness this energy, but they all faced the same problems. Due to the variable nature of the Earth's winds and climate, the programs have faced numerous challenges. “There are several key challenges with flying wind turbines related to the flight… halfway through the paper… unfolds. There are two types of turbines, horizontal and vertical. In BAT a horizontal turbine is used. A wind turbine creates electrical energy from the wind by taking the kinetic energy generated by the rotation of the blades and converting it into electrical energy. This energy is processed on site or set up in a central facility before being fed into the main power grid. The attachments are made of lightweight, high-strength material that holds the turbine in place while transmitting the power generated by the turbine to the ground station. These cables are responsible for keeping the BAT in place during all weather conditions, including high winds, thunderstorms and freezing temperatures. Works Cited http://barnardonwind.com/2013/03/07/are-airborne-wind-turbines-a-plausible -fonte-di-energia-pulita-a cheap/http://www.altaerosenergies.com/ bat.html