Sterling and Wilson Solar Limited, an engineering, procurement, and construction (EPC) company of Shapoorji Pallonji Group, has filed a draft red herring prospectus as part of its planned initial public offering (IPO). The equity shares offered through the Red Herring Prospectus are proposed to be listed on the Stock Exchanges, and the company has received ‘in-principle’ approvals from the BSE and the NSE for the listing.