Appropriate Scale Irrigation

smaller scale technologies are often very useful

examples relating to water:

• windmill driven water pumps
  • Aeromotor
• solar (photovoltaic) driven water pumps
  • deep wells need bigger arrays (1 kwatt)
  • shallow wells and shorter distances - smaller arrays (80 watts)
• shallow water treadle pump
  • Paul Polak - Out of Poverty
• drip irrigation
  • as installed in Nicaragua

importance of this scale of technology (not just for water)

• individual installations are cheaper and can be funded locally
• community is involved
• can be fixed locally
• can be changed or improved more easily
• innovation can spread through the adoption of the components in fresh ways