1. Walton, R. Residential Energy Storage: The Industry’s Next Big Thing (UtilityDIVE, 2015);
http://www.utilitydive.com/news/residential-energy-storage-the-industrys-next-big-thing/406789
2. Sonnenbatterie Sonnenbatterie Enters US Market with First Distribution Deal (2014);
http://www.sonnenbattery.com/en/press/news/news/article/sonnenbatterie-enters-us-market-with-first-distribution-deal
3. Tesla Motors Powerwall Tesla Home Battery (2015);
https://www.teslamotors.com/powerwall
4. Green Mountain Power Files First in the Country Innovative Plan to Offer Vermonters the Tesla Powerwall Home Battery (Green Mountain Power, 2015);
http://news.greenmountainpower.com/manual-releases/Green-Mountain-Power-Files-First-in-the-Country-In
5. Sungevity & Sonnenbatterie Sungevity and Sonnenbatterie Announce Partnership to Offer Home Energy Storage (2015);
http://www.sungevity.com/article/?Id=a6MU00000004DQLMA2&_ga=1.97172890.465704836.1444095635