Roth MKM last night initiated coverage of Quanta Services (PWR) with a Buy rating and $350 price target Quanta is an engineering, procurement, and construction company that provides infrastructure solutions for the utilities, renewable energy, communications, and energy industries, the analyst tells investors in a research note. The firm says the company is one of the best positioned companies to support the acceleration of the electrical infrastructure build-out with its leading market share in electric utility and renewables.