Nepal is the second richest country in the world in terms of available water, and with the vast mountain ranges at its disposal is ideally placed to tap into the hydroelectric potential of such a valuable resource. Despite this, load shedding (power cuts) has been a significant issue for many years for visitors (as well as locals!) and it's only in recent times that the issue has slowly started to resolve itself. It's therefore significantly easier and problem free for trekkers either on the trail or in places like Kathmandu to maintain regular charging for their electronic devices. Two or three pin round universal chargers is recommended, as are portable power banks. Trekkers are also increasingly bringing solar units to keep their devices charged, saving them the high costs en route.