1. EIA. (2017). Electricity data. Eia.gov [Online]. Retrieved August 18, 2017, from https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_1_02_e
2. GTM Research. (2017). U.S. solar market insight executive summary Q2. Washington, DC: SEIA.
3. Speidel, S., & Bräun, T. (2016). Leaving the grid—The effect of combining home energy storage with renewable energy generation. Renewable and Sustainable Energy Reviews, 60, 1213–1224.
4. Muoio, D. (2017). 10 home batteries that rival Tesla’s Powerwall 2. Business Insider [Online]. Retrieved August 18, 2017, from http://www.businessinsider.com/rechargeable-battery-options-compete-tesla-2017-5/#first-some-information-on-teslas-powerwall-2-a-264-pound-lithium-ion-battery-that-you-can-mount-on-your-wall-panasonic-makes-the-cells-for-the-battery-while-tesla-builds-the-battery-module-and-pack-1
5. Solar Quotes. (2017). Solar battery storage comparison table. Solarquotes.com.au [Online]. Retrieved June 15, 2017, from https://www.solarquotes.com.au/battery-storage/comparison-table/#notes