Introduction
Irrigation is the highest power cost in Indian agriculture accounting for almost 20% of the country's total electricity generation. However, the vast majority of pumps operate much longer than they need to, just because no one is there to turn them off at the proper time. This can be overcome with precision using Auto ON/OFF Pump Controllers: they start the pump when it is required and switch it off as soon as the job is completed. This blog provides an exact estimate of the electricity that Indian farmers can save depending on the size of the farm and the type of pump they use, whether they are small, medium or large, and with real data for 2026.
Why Pumps Waste So Much Electricity in the First Place
The basic issue is that, without automation, a pump is running until it is turned off. With electricity available at random times in the Indian agriculture sector — sometimes at 2 am, sometimes at 4 am — farmers are afraid of losing the available time and keep running pumps around the clock. To irrigate a field adequately, the pump may be required to run for 3 hours, but instead it might run for 6-8 hours, wasting 50-60 per cent of the electricity used, and over irrigating the crop. Smart pump automation based on data from IndiaAI's KisanRaja case study, can save up to 25% power usage and 30% maintenance costs of the pump just by ensuring that the pump comes on only when it is truly needed. When this is multiplied by the 32 million of irrigation pumps in India, the total saving potential is calculated to be in thousands of crore rupees annually. These savings directly impact the profitability of the farm and the amount of money saved on electricity costs each season.
Electricity Savings by Farm Size: The Numbers
The table below estimates the electricity and diesel savings Indian farmers can realistically achieve by installing an auto ON/OFF pump controller, based on average daily run time reduction of 2–3 hours and electricity rates of ₹6–8 per unit (metered connection):
Farm Setup |
Pump Size |
Daily Run Time Saved |
Monthly Unit Saving |
Annual Bill Saving |
Small — 1–2 acres |
1–2 HP |
1.5–2 hrs/day |
45–60 units |
₹2,700–3,600 |
Medium — 3–5 acres |
3–5 HP |
2–3 hrs/day |
180–270 units |
₹10,800–16,200 |
Large — 6–10 acres |
5–10 HP |
3–4 hrs/day |
450–800 units |
₹27,000–48,000 |
Diesel Pump (off-grid) |
5–10 HP diesel |
2–3 hrs/day |
12–18 litres diesel/day |
₹36,000–54,000 |
Solar + Smart Controller |
5 HP solar |
Runs only when needed |
Zero grid units consumed |
₹60,000–90,000 (vs diesel) |
How Auto ON/OFF Controllers Reduce Run Time
An auto ON/OFF pump controller eliminates wasted run-time in three fundamental ways. One is the timer scheduling, which enables the farmer to set precise irrigation time — the pump has a predetermined program of irrigation, and it starts and stops automatically, which is preferable to having to travel to the field to turn the pump off. This is important when a farmer irrigates in the early morning time slot as the pump shuts off on time even while the farmer rests. Second, sensor based control - the pump is controlled by soil moisture sensors or tank float switches. Once the soil moisture level is reached or the storage tank is filled, the controller switches off the pump immediately, thus eliminating the over-irrigation that can contribute to a substantial percentage of the pump's unnecessary run time in flood-irrigated fields. Third, power window optimisation will enable the controller to automatically start the pump when powered on, and turn it off after a specified amount of time – which is using all the electricity slots available without the farmer having to be in attendance. A smart controller from Varun, in combination with a 1 kW solar installation, enabled a Gujarat farm to save 20 hours of manual work per week, with only the savings in energy expenditure being 50%.
The 2026 Context: Maharashtra’s ₹48,000 Crore Electricity Waiver
Farmers with pumps of up to 7.5 HP will get a waiver of electricity bill arrears worth ₹48,000 crore under the Madhya Pradesh government's Mukhyamantri Baliraja Mofat Veej Yojana for July 2026, Maharashtra Chief Minister Devendra Fadnavis announced on July 27, 2026. This waiver, which would benefit more than 55 lakh farmers, has cleared past due electricity bills that had hampered farmers from getting new electricity connections. The state already gives free electricity to farmers with pumps up to 7.5 HP, and allocates ₹25,000 crore annually from the budget for compensation to the power companies. In 2026, this policy context further enhances the importance of auto ON/OFF controllers for the farmers of Maharashtra. In free-electricity connection farmers, an unmonitored pump consumes a resource for which the state is paying ₹25,000 crore per year. The use of a controller to optimise the run time helps preserve the water table, lengthens the life of the pump motor and also gives the farmer the correct amount of water for their crop - getting the best value from the free power being supplied. The electricity bill savings are instant and substantial for farmers with metered electricity connections in other states.
Solar + Smart Controller: The Maximum Savings Combination
For farmers currently running diesel pumps, the combination of a solar pump under PM-KUSUM and a smart auto ON/OFF controller delivers the largest electricity savings of any option. MNRE data confirms that solar-powered pumps save Indian farmers up to 40% on energy bills compared to grid-connected pumps — and up to 100% compared to diesel. A farmer investing ₹90,000 (10% share after PM-KUSUM subsidy) on a subsidised 5 HP solar pump saves ₹60,000–90,000 per year in diesel and electricity costs, breaking even within 12–18 months.
When a smart auto ON/OFF controller is added to this solar setup — scheduling pump operation to align with peak solar generation hours and crop water requirements — efficiency improves further. Maharashtra’s solar pump programme already provides daytime electricity to 76% of the state’s farmers, with 100% daytime coverage targeted by end of 2026. For official PM-KUSUM scheme and savings details:
https://mnre.gov.in/en/pradhan-mantri-kisan-urja-suraksha-evam-utthaan-mahabhiyaan-pm-kusum/
Government Support for Auto Controller Adoption
The PMKSY Per Drop More Crop scheme provides 55% subsidy for small and marginal farmers on micro-irrigation systems that include automated pump controllers. For metered-connection farmers, integrating an auto ON/OFF controller with a drip system under PMKSY is the fastest route to reducing electricity bills and water bills simultaneously. For official PMKSY details:
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2112401
The Digital Agriculture Mission (₹2,817 crore, 2024–29) supports IoT-based smart irrigation systems including auto controllers and soil moisture sensors as part of India’s national precision agriculture push. Farmers affiliated with FPOs and KVKs can access these systems through Mission-funded demonstration programmes at subsidised or zero cost. For the official release:
https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=2050966
Conclusion
Auto ON/OFF pump controllers save 25% to 50% electricity on all sizes of farms ranging from 1 acre to 10 acres or more, (with a metered connection) on a small farm of 1-2 acres, it translates to Rs. 2700 per year, and on a large farm of 6-10 acres, it translates to Rs. 48,000 per year. The savings are even greater for those who use a diesel pump. These are not predictions, but data from government officials, farmer field studies and farmer experiences in Gujarat, Maharashtra, Tamil Nadu and Karnataka. The payback period is not years, but months, as the controllers are available in the market at as low as ₹1,500 and the government subsidises the system costs by 40–60%. Electricity money is electricity money every time a season is played without a controller.
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