Water mill is one of the clean and appropriate technology for grinding at local level. The most of part of Nepal still remains far from electric grid connection. The rural electrification has been catch word just to remain safely in vaults of Planning commissions.. Nepal faces one of the longest hour of blackouts as energy crunch nation we are struggling with basic right to energy access. The geographical terrain, improper settlements of housing system, challenges of hindrances on scenic beauty and landscape as tourism being one of major attraction, losses on transmission lines might be counter acting such kinda of electrification initiative.
The appropriate technology is recognizing need of local people, meeting their aspirations and bringing them one step closer to energy access. There is flow of water from higher hills to lower plains. Here gravity does most of the work. The Kinetic energy of water can be directly used for generating energy. Traditionally we have been harnessing such energy through water mill. Still today lots of people in rural areas are highly dependent on traditional water mill for grinding all required household goods such as flour, rice, wheat, spices and also oil in some cases.
The water from head of 20m or above is brought in open or closed conduit. Traditionally wooden blades are used as turbine on which water jets are strike upon, jets rotates the bigger wheel mounted on smaller wheel. There is continuos feed of grains in between grinds into finer particles.
A story form DhunKharkha, Kavre
The village has perennial source of water, water mill is located near river close to the source of water. The villagers have been using water mill for grinding their grains. It was happy to encounter old mother who was grinding her maize on mill. She was so delighted to use it, as it has reduced efforts and time that people used to devote for grinding in traditional way. She explained although she is weak and fragile, she can help her family in some way. The use of water mill popularly known as pani ghatta is free to use. The opening and closing is as simple with supplying and cutting off water supply to mill. She is happy and proud user of water mill.
This is what appropriate and proper technology can transform rural life. Helps in bridging gap in energy and technology use.