@article {862921,
	title = {How much bulk energy storage is needed to decarbonize electricity?},
	journal = {Energy and Environmental Science},
	volume = {8},
	year = {2015},
	pages = {3409-3417},
	doi = {10.1039/C5EE01452B},
	url = {https://drive.google.com/file/d/0B6wfH8hIAchFa1NPMXVpMk9MQ2M/view?usp=sharing},
	author = {Hossein Safaei and David Keith}
}
