Nepal use 220-240 volts/50 HZ power. Sockets take three round pins plug which can be both small or in large sizes. Some sockets have two round pin as well. Please note you need to have both voltage converter and a plug adaptor to use your electrical appliances in Nepal. You may require different plug adaptors if traveling to many countries, so getting a universal adaptor is recommended including converter kit. Voltage fluctuation is common in Nepal so it’s advisable to use adapter with quality power surge protector. In dry seasons, there may be power outage (load shedding) but hotels do have electricity backed up by fuel cells or generators.