KATHMANDU, Feb 22: Kaligandaki 'A' Hydropower Center, under the ownership of Nepal Electricity Authority (NEA), with a capacity of 144 megawatts, will be closed for maintenance for three days. The first unit powerhouse of Main Inlet Vulb-MIV faced leakage of water from 11 pm on Thursday. The production of electricity has been halted due to the leakage.