BP Press Releases, BP Energy Outlook 2035 Shows Global Energy Demand Growth Slowing, Despite Increases Driven by Emerging Economies, Jan. 15, 2014. Available online at http://www.bp.com/en/global/corporate/press/press-releases/energy-outlook-2035.html.
 NEST, The Energy Storage Challenge and an introduction to the storage concept. Available online at http://www.energy-nest.com/the_challenge.html.
 U.S. Energy Information Administration, How much U.S. energy consumption and electricity generation comes from renewable sources?, March 31, 2015. Available online at http://www.eia.gov/tools/faqs/faq.cfm?id=92&t=4.
 Forbes, Storage, Not Generation, is the Challenge to Renewable Energy, July 7, 2012. Available online at http://www.forbes.com/sites/singularity/2012/07/20/storage-not-generation-is-the-challenge-to-renewable-energy/.
 DOE, Energy Storage. Available online at http://energy.gov/oe/services/technology-development/energy-storage.
 Energy Storage Association, Energy Storage Technologies. Available online at http://energystorage.org/energy-storage/energy-storage-technologies.
 Navigant Research, Revenue from Grid-Scale Energy Storage is Expected to Total More than $68 Billion from 2014-2024, Jan. 6, 2015. Available online at https://www.navigantresearch.com/newsroom/revenue-from-grid-scale-energy-storage-is-expected-to-total-more-than-68-billion-from-2014-2024.
 PVTech, IHS: Grid-connected energy storage to exceed 40GW by 2022, Jan. 16, 2014. Available online at http://www.pv-tech.org/news/ihs_grid_connected_energy_storage_to_exceed_40gw_by_2022.
 Joint Center for Energy Storage Research, DOE Energy Innovation Hub – Batteries and Energy Storage, June 2014. Available online at http://blogs.anl.gov/wp-content/uploads/sites/28/2014/06/JCESR-FactSheet-6.19.14.pdf.
 Charles R. Goulding, Andrea Albanese, Charles G. Goulding, R&D Tax Credits for the High-Risk Battery Business, RDTS Publishing, March 2015. Available online at http://www.rdtaxsavers.com/articles/High-Risk-Batteries.
 ConEdison, Demand Management Incentives. Available online at http://www.coned.com/energyefficiency/demand_management_incentives.asp.
 PR Newswire, California Adopts Historic Energy Storage Targets, Oct. 17, 2013. Available online at http://www.prnewswire.com/news-releases/california-adopts-historic-energy-storage-targets-228251181.html.
 Stanford News, Aluminum battery from Stanford offers safe alternative to conventional batteries, April 6, 2015. Available online at http://news.stanford.edu/news/2015/march/aluminum-ion-battery-033115.html.
 Azo Materials, New Battery Imaging Method to Improve Energy Storage, April 21, 2015. Available online at http://www.azom.com/news.aspx?newsID=43664.
 University of Delaware Daily, Powering Up, April 26, 2013. Available online at http://www.udel.edu/udaily/2013/apr/electric-vehicles-042613.html.
 Phys.org, Charged holes in graphene increase energy storage capacity, April 22, 2015. Available online at http://phys.org/news/2015-04-holes-graphene-energy-storage-capacity.html.
 Tesla Energy Press Kit. Available online at http://www.teslamotors.com/presskit.
 Venture Beat, Amazon is testing Tesla’s new energy storage batteries in California, April 30, 2015. Available online at http://venturebeat.com/2015/04/30/amazon-is-testing-teslas-new-energy-storage-batteries-in-california/.
 Bloomberg Business, Your Home Doesn't Matter for Tesla's Dream of a Battery-Powered Planet, May 21, 2015. Available online at http://www.bloomberg.com/news/articles/2015-05-21/your-home-doesn-t-matter-for-tesla-s-dream-of-a-battery-powered-planet.
 GigaOm, 12 energy storage startups to watch in 2015, Jan. 22, 2015. Available online at https://gigaom.com/2015/01/22/12-energy-storage-startups-to-watch-in-2015/.
 Aquion Energy Press Release, Aquion Announces Completion of $36.8 Million Financing Round On The Heels Of Major Technology Announcement, Nov. 5, 2014. Available online at http://www.aquionenergy.com/press-room/press-releases/aquion-announces-completion-368-million-financing-round-heels-major.
 Forbes, EnerVault Unveils First Of Its Kind Iron-Chromium Megawatt-Scale Flow Battery, May 30, 2014. Available online at http://www.forbes.com/sites/peterdetwiler/2014/05/30/enervault-unveils-first-of-its-kind-iron-chromium-megawatt-scale-flow-battery/.
 Imergy Press Release, SunEdison Purchases 1,000 Energy Storage Systems From Imergy To Bring Electricity To Villagers In Rural India, March 25, 2015. Available online at http://www.imergy.com/press-releases/2015/3/sunedison-purchases-1-000-energy-storage-systems-from-imergy-to-bring-electricity-to-villagers-in-rural-india.
 More information on Ambri’s technology available at http://www.ambri.com/technology/.
 Boston Globe, Cambridge company’s battery may give grid a boost, Dec. 30, 2014. Available online at http://www.bostonglobe.com/business/2014/12/30/cambridge-based-battery-maker-charged-for-manufacturing/Iz5kS7khBgBJ5SolLSKHtI/story.html.
 The Wall Street Journal, Power-Storage Startup Stem Raises $12M in Round Led by Mitsui, April 13, 2015. Available online at http://blogs.wsj.com/venturecapital/2015/04/13/power-storage-startup-stem-raises-12m-in-round-led-by-mitsui/.
 For more information, see http://geli.net/software-eos.
 Forbes, After All, Tesla Motors Unveils The Powerwall, May 1, 2015. Available online at http://www.forbes.com/sites/michelinemaynard/2015/05/01/after-all-tesla-motors-unveils-the-powerwall/2/.