Eastern India has rich resource base for intensive and diversified agriculture, but the production and productivity of this region is quite low due to lack of assured irrigation as even a short dry spell of drought adversely affects the stability of agricultural production. The foremost reason energy squeeze in terms of lack of electricity and substantial increase in diesel price, which refrain farmers from operating required number hours of diesel pumps. This region is endowed with enormous solar energy potential with solar radiation of 4 - 6.4 kWh/m²/day and 250 - 300 bright sunshine days. Therefore, it can be a year round reliable source of energy for ground water pumpingto meet supplementary irrigation requirement. In addition to reliability,environmental pollution would also be reduced. However,in view of initial investment cost, cropping pattern and land holding sizes of the region,solar photovoltaic pumping system should be of appropriatesize and it should be designed keeping in view the solar irradianceround the year and water requirement in different seasons. This technical discusses few important aspects to fulfilthis proposition.