SPML Infra Limited functions as a prominent infrastructure development enterprise operating throughout India. The company excels in comprehensive water resource management projects, encompassing urban water supply, distribution, and treatment, as well as the construction of essential pumping stations for potable water, agricultural irrigation, wastewater processing, and storm drainage. Their capabilities also include designing and supplying extensive bulk and local pipeline networks, alongside significant civil engineering feats such as dam construction, canals, lift and micro-irrigation systems, and water-related tunneling. In the energy sector, SPML Infra undertakes power generation, transmission, and distribution endeavors. This involves developing diverse power plants, spanning hydroelectric, solar, wind, gas turbine, and thermal technologies, as well as establishing sub-transmission/distribution networks, building substations, implementing rural electrification initiatives, and delivering sophisticated integrated and smart energy management solutions. Beyond water and power, the company's portfolio extends to a wide array of civil and urban infrastructure. This includes the construction of roads, bridges, flyovers, highways, industrial facilities, general tunneling, Special Economic Zones (SEZs), various industrial/business/technology parks, airports, bus terminals, advanced automated car parking systems, and toll express roads. Moreover, SPML Infra provides comprehensive, end-to-end waste management provisions, covering the full spectrum from collection, segregation, and transport to treatment, reusability, processing, and environmentally sound disposal of both liquid and solid waste, in addition to specialized sewer system rehabilitation. The company further develops an integrated management information system—a bespoke software platform designed for utility management, encompassing functions like metering, billing, customer relationship management (CRM), network analytics, demand forecasting, asset and inventory tracking, business intelligence, and comprehensive operation and maintenance for the entire infrastructure network. Established in 1981, the company was initially known as Subhash Projects and Marketing Limited before rebranding as SPML Infra Limited in April 2010. Its headquarters are located in Kolkata, India.