* '''Data on hydro resources''': Linked to the limited knowledge about the technology is the lack of proper resource data on water availability and flow on which hydro developments can be based.
==Construction, operations and maintenance==
[[Image:micro hydro set up.jpg|thumb|center|600px|A micro-hydro power set up. Drawing: [http://practicalaction.org/micro-hydro-power-3 Practical Action.]]]
==Costs==
The cost varies from approximately £1,200 to £4,000 per installed kW, when using appropriate technologies, which are much cheaper than using conventional approaches and technologies.
In the examples examined in the five countries, the capital cost of micro hydro plants, limited to shaft power, ranged from US$714 (Nepal, Zimbabwe) to US$1,233 (Mozambique). The average cost is US$965 per installed kW, which is in line with the figures quoted in some studies. The installed costs for electricity generation schemes are much higher. The installed cost per kW ranged from US$1,136 (Pucará, Peru) to US$5,630 (Pedro Ruiz, Peru) with an average installed cost of US$3,085.