Public utilities in Gangtok are managed by state departments and local municipal bodies, with a strong emphasis on sustainability.
* **Electricity:** Power is supplied by the Energy & Power Department, Government of Sikkim. The state relies heavily on run-of-the-river hydroelectric projects, making its power grid largely green. * **Water Supply:** The Public Health Engineering (PHE) Department provides piped drinking water to the city. The primary water source is the Ratey Chu river, located at a higher altitude. * **Waste Management:** Handled by the Gangtok Municipal Corporation (GMC). Gangtok is famous for its strict and successful waste management policies. There is a statewide ban on single-use plastics and polystyrene. * **Gas:** LPG (Liquefied Petroleum Gas) cylinders are the primary source of cooking fuel, supplied by agencies affiliated with national oil companies. Piped natural gas is not currently available. * **Telecommunications:** Broad band and mobile connectivity are generally reliable, serviced by major national telecom operators (Jio, Airtel, BSNL, Vodafone Idea), though extreme weather can occasionally disrupt mountain towers.