Renewable energy is lively topic in many parts of the world, but despite its recent popularity of renewable energy sources still do not know what it takes to compete with fossil fuels can. It is not only because the gas oil, coal and natural gas on a long history of use and powerful lobbies behind them, but also because the science has not developed effective methods are economically feasible to use renewable energy sources.
Scientists are still searching for cheap and highly efficient solar cells, they argue possibilities of storing cheap energy to the problem of intermittency of solar and try wind energy to solve them yet on whether the biomass is a good answer to replace fossil fuels or not, and so on. And until fossil fuels are still the ones who dominate the world energy demand.
The oil lobbies are still control the political world, coal remains the world’s leading source for electricity and natural gas is becoming increasingly popular, especially after the discovery of shale gas.
What is renewable energy? The effort is there, but these efforts are sufficient? Is it realistic to expect that until the end of this century, renewable energy sources become dominant. Yes it is, but we did not wait too long, because the security of energy supply is not only what we should be concerned, there is also the familiar problem of climate change.
If fossil fuels will remain dominant energy source for decades to climate change, the point of no return pass. Once that happens only very few people are talking about the security of energy supply.
