1. Europe is sinking billions into beating asia on batteries. Will it pay off?;Deign,2020
2. Why the wind curtailment of northwest China remains high;Luo;Sustain Times,2018
3. Policy document No. 1701,2019
4. Energy storage for the electricity grid: Benefits and market potential assessment guide;Eyer,2010
5. Market and regulatory barriers to electrical energy storage innovation;Gissey;Renew Sustain Energy Rev,2018