Renewable energy used to experiencing natural limitations that some energy is very real. It can not be used all the time and not enough, as if overcast sky with no sun. If the wind is calm, no wind turbine. Or if the water level in the dam does not have enough electricity. But human nature did not give up. It is known to increase the production of energy or more energy to bring to the next. And that the cost increases. For comparison, the use of fossil fuels will be over. You can see that renewable energy may not have all the solutions. It is a valuable natural alternatives. Reducing the impact on the environment as well.