Sugarcane is the most water-hungry field crop India grows at scale, a single planted crop drinks 1,500 to 2,500 mm of water across 10 to 12 months, roughly 60 to 100 lakh litres per acre over the crop (1 mm over an acre is about 4,050 litres), part of it met by rain, with demand peaking in the grand-growth phase. That year-round profile is exactly why solar pump sizing for sugarcane differs from cotton, paddy, or wheat. A KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan) solar pump for a sugarcane farmer must deliver sustained, 12-month output, not the seasonal bursts that lower-duty crops tolerate. For a typical 5-acre sugarcane plot, that means a 10 HP (horsepower) AC solar pump designed for a 100 to 150-foot water table, paired with drip wherever the cane variety and soil allow.
This guide breaks down the sizing maths sugarcane farmers in Uttar Pradesh, Maharashtra, Karnataka, Tamil Nadu, and Bihar need to size right under PM-KUSUM Component B, the four year-round inputs we use on every site survey, and the multi-year ROI (return on investment) once diesel exits your cost sheet.
Direct answer. A 5-acre sugarcane farm using flood irrigation needs a 10 HP solar pump under KUSUM Component B; with drip irrigation, the same farm runs comfortably on 7.5 HP. A 3-acre plot fits 5 HP, a 10-acre plot pushes to 12.5 to 15 HP (central aid stops at the 7.5 HP level, so the 10 HP flood system and anything bigger cost you more). Subsidy under Component B was 30% central + at least 30% state, leaving the farmer 40% or less; new applications depend on PM-KUSUM 2.0, as the scheme period ended on 31 March 2026. Heaven Green Energy designs sugarcane-specific solar pumping systems across UP and Maharashtra’s sugar belts.
Scheme status, October 2026. PM-KUSUM’s sanctioned period ran to 31 March 2026. MNRE has allowed only projects whose PPA was signed, or whose Notice to Proceed was issued, on or before 31 December 2025 to complete, by 31 March 2027, with no extension beyond that date (MNRE office memoranda of 28 March, 25 May and 28 September 2026 on the PM-KUSUM national portal). New Component B applications depend on PM-KUSUM 2.0, which MNRE described in March 2026 as at the proposal stage. The sizing guidance below still applies to any solar pump; confirm with your state implementing agency whether a subsidy window is actually open before you plan around it.
If you grow sugarcane on holdings between 3 and 15 acres and you still run a diesel pump, this guide is the sizing reference your KUSUM application should mirror, because under-sized pumps starve the grand-growth phase and over-sized pumps blow your subsidy ceiling.
Why Sugarcane Sizing Requires Year-Round Solar Capacity
Most KUSUM sizing calculators assume seasonal crops, kharif (June–October) or rabi (November–March). Sugarcane breaks that assumption. A plant crop planted in February or October keeps drawing water for 10 to 12 continuous months before harvest, then a ratoon crop (the regrowth from the cut stubble) runs another 10 to 11 months on the same root system. Your pump cannot take a four-month off-season the way a cotton or wheat pump can.
This has three practical consequences. First, peak-day sizing matters more: the grand-growth phase between months 4 and 8 is when daily demand peaks, often in the heat of May and June. Second, the panel array must clear summer dust and partial-monsoon-overcast days without dropping below crop-survival output. Third, the pump motor itself accumulates more annual run-hours than any other agricultural application, so build quality (ISI/BIS marking, ALMM-listed panels) is non-negotiable. The Indian Council of Agricultural Research – Sugarcane Breeding Institute (ICAR-SBI) at Coimbatore publishes variety and crop-management guidance that we cross-check on every site.
The Sugarcane Solar Pump Sizing Framework, 4 Year-Round Inputs
This is the framework we use on every sugarcane site survey across the UP belt (Bijnor, Saharanpur, Muzaffarnagar, Lakhimpur Kheri) and the Maharashtra sugar belt (Kolhapur, Sangli, Solapur, Pune). Four inputs determine the right HP and panel kWp (kilowatt-peak); skip any one and you mis-size.
Input 1: Variety and Crop Duration
Early-maturing varieties (Co-0238, CoS-08272, common across UP) finish in 10 to 11 months and tolerate slightly compressed water demand. Mid-late varieties (Co-86032, CoM-0265, dominant in Maharashtra’s sugar belt) run 12 to 13 months with a longer peak-demand window. Adsali (18-month) plantings in western Maharashtra need almost two full peak-season cycles, which pushes the pump duty hours up further.
Sucrose recovery, the metric your sugar mill pays you on, depends materially on water management in the final two months. An under-sized pump cuts off the ripening phase early and you can lose 0.5 to 1.0 points of recovery. Under the central FRP (Fair and Remunerative Price) for the 2026-27 season, ₹365 per quintal at 10.25% recovery with ₹3.56 per quintal for each 0.1 point (PIB), that is roughly ₹180 to ₹360 per tonne in your pocket. Sizing for the variety, not the average, protects that recovery margin.
Input 2: Ratoon vs Plant Crop
A ratoon crop draws less water in the first 60 days because the root system is already established and tillering starts faster, noticeably lower than plant-crop demand in months 1 to 2, then converges to identical demand from month 3 onward. If your farm runs a 3-ratoon cycle (plant crop + 2 to 3 ratoons) you can size to plant-crop peak; the ratoon savings in early months are a buffer, not a sizing input.
Input 3: Soil Type and Drainage
Sandy loams in the UP belt drain quickly and need frequent irrigations in the peak phase; black cotton soils across Maharashtra hold water far longer between irrigations. The pump is sized to peak-day delivery either way, but a sandy-soil farm needs more pumping margin. Under KUSUM the panel array cannot exceed the pump’s HP in kW, so that margin has to come from the pump rating, not extra panels.
Input 4: Water Table Depth
This is the dominant cost driver. A 100-foot water table in the UP belt fits a submersible AC pump on a 7.5 to 10 HP rating (surface pumps only suit very shallow water). A 200 to 300-foot water table in drought-stressed Marathwada or south Karnataka pushes you to a submersible pump rated 15 HP for the same surface delivery, because the pump fights gravity for an extra 100 to 200 feet. For exact head-vs-HP curves, see our borewell depth solar pump sizing guide.
Crop-Stage Water Demand for Sugarcane (per acre)
| Stage | Months | Relative daily demand | Irrigation frequency | Notes |
|---|---|---|---|---|
| Germination | 1 to 2 | Low | Frequent, light | Light, frequent watering, sandy soils |
| Tillering | 3 to 4 | Medium | Regular | Critical for cane count |
| Grand growth | 5 to 8 | Highest | Most frequent | Peak, sizing-critical phase |
| Maturation | 9 to 10 | Medium | Reduced | Controlled stress raises sucrose |
| Ripening | 11 to 12 | Low | Tapering off | Stop 2 to 3 weeks before harvest |
Stage pattern: Heaven Green field measurements across 47 sugarcane farms in UP and Maharashtra, 2024 to 25. For variety-specific irrigation schedules, see ICAR-SBI and your state agricultural university.
HP by Acreage for Sugarcane
The acreage-to-HP table below assumes flood irrigation, a 100 to 150-foot water table, and a 10 to 12-month plant crop. Drip irrigation drops every row by roughly one HP class. Deeper water tables (200 ft+) push every row up one class.
| Acreage | Seasonal water (approx.) | KUSUM pump HP | Panel kWp | All-in cost | Farmer share |
|---|---|---|---|---|---|
| 3 acres | 1.8 to 3.0 crore L | 5 HP AC | 4.8 kWp | ₹3.2–₹3.6 lakh | ₹1.3–₹1.45 lakh (60% subsidy) |
| 5 acres | 3.0 to 5.1 crore L | 10 HP AC | 9.0 to 9.6 kWp | ₹5.5–₹6.0 lakh | Over 40%: central aid capped at 7.5 HP* |
| 10 acres | 6.1 to 10.1 crore L | 12.5 to 15 HP* | 11.25 to 15 kWp | ₹8.5–₹9.5 lakh | Over 40%: central aid capped at 7.5 HP* |
| 20 acres | 12.1 to 20.2 crore L | 2 × 10 HP** | 18 to 19 kWp | ₹12–₹13 lakh | See note** |
*Under MNRE’s PM-KUSUM guidelines, pumps above 7.5 HP are allowed but central aid is limited to what a 7.5 HP pump would get (15 HP in north-eastern, hill and island states), so above 7.5 HP you pay the extra cost; state top-ups vary. Seasonal water is the 1,500 to 2,500 mm range converted at about 4,050 litres per mm per acre, part of it met by rain. **Two pumps on separate borewells keep each unit closer to the cap, but whether one farmer can hold two KUSUM pumps is a state rule; check with your implementing agency. Groups registered as a water user association or FPO can get central aid for up to 7.5 HP per member.
For state-specific application steps, see KUSUM UP application 2026 or KUSUM Maharashtra application 2026.
Drip Irrigation Combined with Solar Pump for Sugarcane
Drip irrigation paired with a solar pump is the single highest-impact change a sugarcane farmer can make in 2026. Drip cuts water use substantially relative to flood, which usually lets the solar pump drop one HP class, and the Per Drop More Crop (PDMC) drip subsidy, 55% of the unit cost for small and marginal farmers and 45% for others, run under the Rashtriya Krishi Vikas Yojana since 2022-23, is separate from KUSUM. In Maharashtra, where the state has pushed sugarcane growers towards drip, the combined economics are strong.
| Metric | Flood + solar pump | Drip + solar pump | Delta |
|---|---|---|---|
| Water use (5 acres) | Baseline (flood) | Lower: water goes to the root zone | Lower |
| Required pump HP | 10 HP | 7.5 HP | −1 class |
| Panel kWp | 9.6 kWp | 7.5 kWp | −22% |
| All-in system cost | ₹6.0 lakh | ₹4.7 lakh + drip ₹1.2 lakh | similar |
| Yield | Baseline | Typically higher with good management | Higher |
| Sucrose recovery | Baseline | Often better | Higher |
The yield uplift comes from sustained, root-zone-targeted moisture during the grand-growth phase, exactly when flood irrigation often fails because of canal-rotation delays in UP or load-shedding diesel-pumping in rural Maharashtra. Subsurface drip also lowers weeding labour and eliminates the inter-row evaporation losses that summer flood irrigation suffers.
Get a free sugarcane site survey. Our agronomy team measures your water table, soil texture, and current crop calendar, then builds a sized KUSUM + drip proposal you can take straight into the state portal. No obligation. Talk to a Heaven Green sugarcane specialist →
Cost, KUSUM Subsidy, and Multi-Year ROI for Sugarcane Farmers
Under MNRE’s PM-KUSUM guidelines, Component B paid 30% central assistance (of the benchmark or tender cost, whichever is lower) plus at least 30% from the state, with the farmer’s 40% or less payable partly through a bank loan, so the farmer could pay as little as 10% upfront. Central aid is capped at the 7.5 HP level and covers the pump system only (drip is funded separately), and most sugarcane farmers we work with pay their share upfront and skip the loan. With the scheme period over since 31 March 2026, new sanctions depend on PM-KUSUM 2.0. For the central scheme master rules, see our PM-KUSUM complete guide.
| Cost line | 5-acre flood (10 HP) | 5-acre drip (7.5 HP) |
|---|---|---|
| All-in equipment + installation | ₹5.80 lakh | ₹5.90 lakh (₹4.70 lakh pump system + ₹1.20 lakh drip) |
| Central subsidy (30%) | Capped at the 7.5 HP level | ₹1.41 lakh (on the pump system) |
| State subsidy (at least 30%) | Varies by state above 7.5 HP | ₹1.41 lakh |
| Farmer share | More than ₹2.32 lakh (over 40%) | ₹1.88 lakh, plus the drip cost net of PDMC subsidy |
| Annual diesel + service saved | ₹2.50–₹3.30 lakh | Somewhat less (drip pumps less water) |
| Yield/recovery uplift | , | +₹1.20–₹1.80 lakh |
| Payback (full system cost) | About 2 years | 1.5 to 2.0 years |
Diesel savings, yield uplift and payback are Heaven Green estimates; they depend on your actual fuel use and local diesel price.
Diesel-savings maths (Heaven Green estimate): a 10 HP diesel pump running 6 to 8 hours/day across the 10-month sugarcane season burns 2,200 to 2,800 L of diesel annually, ₹2.0 to 2.5 lakh at ₹90/L pump-station price, plus ₹50,000 to 80,000 in oil and service. The solar pump eliminates the fuel line entirely. Across a 25-year solar pump life (panel warranty 25 yrs, pump motor 5 to 7 yrs with replacement budgeted), the fuel saving alone for a 5-acre farmer is roughly ₹50 to 63 lakh at today’s diesel prices, and rises with every fuel hike.
For deeper acreage and head modelling specific to your borewell, run the Heaven Green solar calculator.
Common Sizing Mistakes Sugarcane Farmers Make
Across the sugarcane KUSUM installations we’ve delivered through 2024 to 25, six mistakes account for nearly every under-performance complaint. All preventable with a 30-minute site survey.
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1
Sizing on average demand, not peak grand-growth demand. The pump must clear month-5 to month-8 daily delivery, not the annual average. Average-sized pumps fail in May–June when cane needs it most.
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2
Ignoring the deeper-summer water table. A borewell that yields 4 inches at 120 feet in February may drop to 180 feet by May. Size for the May water table, not the survey-day reading.
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3
Under-rating the panel kWp relative to pump HP. Sugarcane runs the pump 6 to 8 hours/day for 10 months. Fit the full array MNRE specifies for the pump (9,000 Wp for a 10 HP); KUSUM does not allow more panel kW than the pump's HP, so cloudy-day margin has to come from the pump rating, not extra panels.
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4
Choosing a vendor the state agency has not selected. KUSUM subsidy flows only through vendors chosen in the state implementing agency's tender. Confirm the vendor with your state agency (reachable via the national [PM-KUSUM portal](https://pmkusum.mnre.gov.in/)) before signing.
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5
Sizing for current acreage, not the planned ratoon-cycle expansion. Most sugarcane farmers add 1 to 2 acres within three years. Plan the pump for year-3 acreage, not year-0.
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6
Skipping drip when the soil and variety allow. A flood-only KUSUM application leaves 25 to 30% of the lifetime ROI on the table. File for the PDMC drip subsidy in parallel.
For variety-specific peer crops with similar long-duration profiles, compare with our solar pump for cotton farming and solar pump for paddy farming sizing guides.
Pumping for Ratoon Crops, Different Schedule
A ratoon crop runs a shorter cycle (10 to 11 months vs 12 for plant) and reaches grand-growth two to three weeks earlier because the root system is pre-established. Pump utilisation differs across the season, lower in months 1 to 2, identical from month 3, but the peak-day sizing is the same. Where the choice gets interesting is between continued flood irrigation across the ratoon cycle and switching to drip from the ratoon onward.
- Pro Lower upfront, no drip layout cost
- Pro Works with bullock and mechanised tillage between ratoons
- Pro No drip-line damage from ratoon stubble cutting
- Pro Simple farm-labour training
- Pro Substantial water saving, smaller pump qualifies
- Pro Higher yield and sucrose recovery with good management
- Pro PDMC drip subsidy is separate from KUSUM
- Pro Lower weeding and inter-row evaporation
Verdict. For any sugarcane farmer running a 3-acre or larger plot with at least one ratoon planned, drip-paired solar wins on lifetime economics by ₹4–₹7 lakh over a 25-year horizon. The only case where flood-paired solar is cleaner is small subsistence plots under 2 acres or fields where the variety and soil combination doesn’t support subsurface drip, both rare in the commercial UP and Maharashtra belts.
How Heaven Green Energy Designs Sugarcane Solar Pumps
Heaven Green Energy is empanelled across all major sugarcane-growing states under PM-KUSUM Component B, with active field teams in UP’s Bijnor–Saharanpur–Lakhimpur belt and Maharashtra’s Kolhapur–Sangli–Solapur sugar belt. We’ve delivered KUSUM systems across cotton, paddy, wheat, and sugarcane, and sugarcane is the application where sizing precision pays back fastest. Our delivery flow:
- Site survey: water table reading across pre-monsoon and post-monsoon dates, soil texture sampling, variety and ratoon cycle review.
- Sized proposal: pump HP, panel kWp, and inverter rating mapped to your peak grand-growth demand, with the array sized to MNRE’s specification for the pump rating.
- KUSUM filing: state portal application, central + state subsidy reconciliation, document pre-check.
- ALMM-listed panels: Adani Solar tier-1 modules with 25-year linear power warranty.
- BIS-marked AC submersible pumps with 5-year motor warranty and remote MPPT (Maximum Power Point Tracking) controller.
- Drip integration under the PDMC scheme where the site supports it.
- 25-year performance support through our O&M (Operations & Maintenance) network.
Explore the services that match your project:
- PM-KUSUM application support: end-to-end filing for Component A, B, and C.
- Solar Calculator: see your sugarcane KUSUM sizing and subsidy in 60 seconds.
- Contact us: a solar advisor responds within 2 hours on business days.
For the next state-specific filing steps, see KUSUM UP application 2026 or KUSUM Maharashtra application 2026.
Frequently Asked Questions
What HP solar pump do I need for 5 acres of sugarcane under KUSUM?
A 5-acre sugarcane farm using flood irrigation needs a 10 HP AC solar pump under KUSUM Component B, sized to clear the grand-growth peak. If you pair the pump with subsurface drip irrigation, the same farm runs on 7.5 HP. The 10 HP system uses a 9.0 to 9.6 kWp panel array and costs ₹5.5–₹6.0 lakh all-in; because central aid is capped at the 7.5 HP level, your share is more than 40% of that (over ₹2.2–₹2.4 lakh). New applications depend on PM-KUSUM 2.0, as the scheme period ended on 31 March 2026.
How much diesel does a solar pump save on a sugarcane farm per year?
A 10 HP diesel pump running 6 to 8 hours per day across the 10-month sugarcane season burns 2,200 to 2,800 litres of diesel annually. At ₹90 per litre pump-station price, that is ₹2.0–₹2.5 lakh in fuel alone, plus ₹50,000–₹80,000 in oil, service, and breakdown repairs. A solar pump eliminates that entire line, so a 5-acre sugarcane farmer typically sees ₹2.5–₹3.3 lakh in annual savings (Heaven Green estimate), plus the yield uplift if drip is added.
Does KUSUM cover sugarcane farmers in Uttar Pradesh and Maharashtra?
Component B (off-grid standalone solar pumps) covered sugarcane growers in both states like any other farmers, but the scheme period ended on 31 March 2026 and new applications depend on PM-KUSUM 2.0. In UP, Component B pump bookings ran through the state Agriculture Department; Maharashtra ran it through Mahaurja (MEDA, the Maharashtra Energy Development Agency). Under the guidelines the farmer paid 40% or less after the 30% central and at-least-30% state shares.
Can I combine drip irrigation subsidy with KUSUM for sugarcane?
Yes, drip irrigation is subsidised separately under the Per Drop More Crop (PDMC) scheme, now run under the Rashtriya Krishi Vikas Yojana, at 55% of the unit cost for small and marginal farmers and 45% for others. KUSUM covered the solar pump and panels; PDMC covers the drip emitters, laterals, mains, sub-mains, and venturi/sand-filter installation. At the standard rates the two together cover roughly 55 to 60% of a ₹5.9 lakh pump-plus-drip system on a 5-acre farm, more where the state tops up. File the drip application with your state agriculture or horticulture department.
What is the water requirement of sugarcane and how does it affect pump sizing?
Sugarcane needs 1,500 to 2,500 mm of water across its 10 to 12-month crop cycle, roughly 60 to 100 lakh litres per acre (1 mm over an acre is about 4,050 litres), part of it met by rain, with demand peaking during the grand-growth phase (months 5 to 8). Solar pump sizing must clear the peak-day demand, not the seasonal average, a pump sized to the average will fail in May–June when cane needs water most. This is why sugarcane pumps are typically one HP class larger than equivalent acreage in cotton or wheat.
How long does it take to recover the cost of a KUSUM solar pump on a sugarcane farm?
On the full system cost, payback runs about 2 years for a flood-irrigated 5-acre sugarcane farm, and 1.5 to 2.0 years if the farmer adds drip irrigation. The faster drip payback comes from three stacked effects: lower upfront cost on the smaller pump, the yield uplift, and better sucrose recovery at the sugar mill (Heaven Green estimates). After payback, the system delivers free pumping for the remaining 22 to 23 years of its 25-year lifetime.
Is a 12.5 HP or 15 HP solar pump available under KUSUM for 10-acre sugarcane farms?
Pumps above 7.5 HP are allowed under Component B, but under MNRE’s guidelines central aid is limited to what a 7.5 HP pump would get (15 HP in north-eastern, hill and island states), so a 12.5 HP pump on a 10-acre farm gets the 7.5 HP level of central aid and you fund the rest, subject to any state top-up. Whether one farmer can hold two KUSUM pumps on separate parcels is a state rule; check with your implementing agency. Groups registered as a water user association or FPO can get central aid for up to 7.5 HP per member. New applications depend on PM-KUSUM 2.0.
Does ratoon cropping change the solar pump sizing requirement?
No, peak-day sizing stays identical between plant crop and ratoon crop because the grand-growth phase demand per acre is the same. Ratoon does reduce water demand in months 1 to 2 because the root system is pre-established, but that is a buffer, not a sizing input. Size for the plant-crop peak; treat the ratoon-season early savings as cushion for cloudy days or expansion acreage.