NRG – which took aim at residential PV leaders SolarCity and Vivint Solar last year through its acquisition of Roof Diagnostics Solar – ended 2014 with 13,390 home solar customers on its books.
It wants to have 35,000-40,000 customers by the end of 2015 – requiring an annual increase of more than 20,000 – but added just 2,800 in the first quarter.
But
