If God appeared in the dream of a paddy farmer in India’s West Bengal and said, “You have made me happy with your hard work, make any three wishes and they will be granted,” the farmer will say “I want rain, rain, rain.”
That thought kept playing over and over in my mind, after interacting with farmers in the paddy fields of the Siliguri and Jalpaiguri districts of West Bengal. Located in India’s northeast, the area is famous for its scenic beauty, tea plantations and paddy fields. While the region’s fertile soil makes it ideal for a variety of crops, it is almost entirely dependent on rainfall for irrigation, like anywhere else in the world.
To reduce their dependence on the monsoons, India’s farmers have taken 12 million electricity connections and 9 million diesel pump sets with which they pump up groundwater for irrigation.
Although agriculture’s share of India’s economy is declining—it contributes to less than 15% of India’s GDP—it still employs 50% of the country’s workforce. Not surprisingly, perhaps, up to 20% of all the electricity used in India is for agriculture, mostly for irrigation. In some states, this can account for as much as 30-50% of all the electricity used in the state.
There are many states where power for agricultural purposes is highly subsidized, and this, combined with an unreliable supply of electricity, often causes farmers to leave their pumps on all the time. This wastes both electricity and water, with too much energy being used and too much groundwater being extracted, often way more water than needed.
Since more than half of India’s cultivated land is yet to be irrigated, a business-as-usual scenario will lead to a huge rise in India’s energy needs for agriculture alone.
But there is an alternative—solar energy.
With decreasing solar modules prices (70% in the last 4 years), solar pumps are fast becoming a viable financial solution for irrigation.
However, there are several questions about the use of solar pumps that need to be answered:
Won’t solar pumps only make farmers more lax about using energy resources and wasting groundwater?