As we move towards more renewable energy generation, we encounter problems that did not occur in our current system of generation – namely the variability of the power output. We can predict with a good amount of accuracy how much wind is going to blow or the amount of sunlight on any given day, but we are still some way off 100% accuracy. This article will describe the downsides of renewable energy generation and will go into some ways in which we can mitigate these issues.