Mar 01, 2019 Rooftop solar systems for buildings Plans to set up grid-connected solar rooftop systems for around 130 buildings. The capacity of the rooftop projects will vary from 1 kW-36 kW. The largest rooftop project of 36 kW will be installed at Vellore Fort. Bids were recently invited in this regard. The work is likely to commence in a month.