Arbor is an app that lowers the price you pay for electricity. In states with deregulated electricity markets (13 states in the NE, Midwest, and Texas), you are able to choose an alternative electricity supply plan without changing your utility company. Most people don't know this, so they stick with the default supply plan provided by their utility company which may not be as low as other competitive supply plans available.
Arbor finds and secures lower rates for you, and is available to renters and homeowners. You pay your same usual bill to your utility, but with a lower rate.