Answer:
- Unreliable supply is a disadvantage of most renewable energy sources 
- Energy – abundant, reliable, portable, versatile and affordable 
- Fossil fuels surrender over 80% of the world’s energy because they are superior to current alternatives 
- Hence, most renewable energy sources’ disadvantage is their unreliable supply 
- But due to renewable energy resources from biomass, wind and solar, an individual can control accession to energy conservation held in fossil fuels 
- The renewable energy also depends on the weather condition of its power source 
- Energy sources like wind turbines are clean and inexpensive to run 
- Tidal generators are cleansed and inexpensive and produce or render a lot of electricity once started running