Renewable energy generation mainly relies on naturally-occurring factors – hydroelectric power is dependent on seasonal river flows, solar power on the amount of daylight, wind power on the consistency of the wind –meaning that the amounts being generated will be intermittent. Similarly, the demand for energy. Unlike fossil fuels, renewable energy creates clean power without producing greenhouse gases (GHGs) as a waste product. By storing and using renewable energy, the system as a. A key benefit of being able to store this energy is that it helps to prevent renewable resources from going to waste. There are times when the amount of electricity being generated. Energy storage technologies work by converting renewable energy to and from another form of energy. These are some of the different technologies used to store electrical energy that's produced from renewable sources:.