1. “KP Introduction|UNFCCC”. https://unfccc.int/process/the-kyoto-protocol (Accessed 16-May-2018).
2. “The Paris Agreement|UNFCCC”. https://unfccc.int/process-and-meetings/the-paris-agreement/the-paris-agreement (Accessed 16-May-2018).
3. “Key world energy statistics”, 2017.
4. “Statistics : Key electricity trends 2016”, 2017.
5. Energy storage technologies and real life applications – a state of the art review;Aneke;Appl. Energy,2016