No longer a startup [1], but OPower was founded in 2007 in Arlington, VA (which is right across the river from DC) [2]. [1] http://www.washingtonpost.com/busin

No longer a startup [1], but OPower was founded in 2007 in Arlington, VA (which is right across the river from DC) [2]. [1] http://www.washingtonpost.com/business/capitalbusiness/arlington-based-energy-software-provider-opower-will-debut-public-shares-friday/2014/04/04/078e7ef4-bba6-11e3-96ae-f2c36d2b1245_story.html http://www.washingtonpost.com/business/capitalbusiness/arlin... [2] https://en.wikipedia.org/wiki/Opower https://en.wikipedia.org/wiki/Opower