Solar Energy Groundwater Pumping: A Sustainable solution to Energy Squeeze in Smallholders’Irrigation in India
India′s smallholder agriculture boomed with supplemental irrigation made possible by diesel and electric pumps.Nevertheless, the smallholders’ irrigation is under siege from an energy squeeze with deteriorating farm power supplyandmanifold increase in diesel prices. This energy squeeze undermines the adoption of broad range precision irrigation technologies and profitable productivity of small holdings.However, the use of solar energyparticularlyin groundwaterpumping anduse of pressured irrigationcould improve energy access, reduce fossil fuels consumptions, asaverage incident solar radiationover India’sgeographical areais of 4-7 kWh/m2/ day with 250-300 clear sunshine days/year. To promote solar energyuse under the prevailing solar radiation conditions and depth to water level scenario of groundwater a suitablegroundwater pumping system model is required to fulfil the irrigation needs. This paper describes a solar photovoltaic groundwater pumping model suitable for small farmirrigation ether by traditional methods of irrigations orby pressuredmethod, as it generates pressure headsof98 -147kPa whenincident solar radiation ranged from400- 800W/m2, the solar radiation condition which prevailsover its geographical area between 9.00-14.00 hrsround the year.