Section 3(42) in Central Electricity Regulatory Commission (Terms and Conditions of Tariff) Regulations, 2014
(42)'Operation and Maintenance Expenses' or 'O&M expenses' means the expenditure incurred for operation and maintenance of the project, or part thereof, and includes the expenditure on manpower, repairs, maintenance spares, consumables, insurance and overheads but excludes fuel expenses and water charges;
