This is more of a program than an actual organization, and it is in the pilot phase. This program is coordinated by RI Office of Energy Resources and Commerce RI. It's also a collaboration with three RI municipalities so far (North Smithfield, Tiverton, and Little Compton as of January 2015), and with Sol Power (a Providence-based cooperative), and SmartPower. From the website:
Solarize Rhode Island (Solarize RI) is a program designed to encourage the adoption of residential and commercial solar photovoltaic (PV) systems through a coordinated education, marketing and outreach effort, combined with a tiered pricing structure that provides increased savings to homeowners and businesses as more people go solar.
Other background info can be found in a PBN article dated January 29, 2015.