HPCL Renewable and Green Energy (HPRGEL), a wholly-owned subsidiary of HPCL, has invited bids to select the owner’s engineer for the design, engineering, supply, erection, and commissioning of a 210 MW solar project with 400 MWh battery energy storage system (BESS) in Maharashtra and a 140 MW solar project with 400 MWh of BESS in Andhra Pradesh.