SIELTE SpA provides telecommunication and energy systems. Its telecommunication systems include fixed networks, mobile and wireless networks, and equipment and systems. It offers energy systems for power production from renewable sources; power transmission and distribution plants; power and co generational facilities; energy efficiency and renewable energy sources; and service plant maintenance. The company also provides technological systems for transport and infrastructures, such as railways and metro stations, roads and highways, ports and airports, and oil and gas. SIELTE SpA also offers technical assistance services that include help desk, maintenance, and repair and replacement service; consultancy services, including marketing, technical, and security and safety consultancy, as well as implementation services; network and facility management services; design services, such as planning and optimization of network and facility; and realization services, including planning of the roll out, site preparation, and site realization; installation of communication and power cables, wiring, and equipment, as well as software installation integration, activation, and testing. It offers multivendor solutions. The company was formerly known as Cosir S.p.A. SIELTE SpA was founded in 1925 and is based in Rome, Italy with an additional office in Gregorio di Catania, Italy.