As the world's population is growing it is getting vitally important to solve the energy problem and a number of companies are investing in searching for new oil sources. However,this source of power cannot be restored. Therefore, there is an opinion, that it might be worthwhile to fund sustainable energy sources,wind and power, for example. I am inclined to agree with this point of view since green energy will not run out and , moreover, it has no greenhouse gas emissions and this essay will discuss it in more detail.