Sugarcane is the most water-hungry field crop India grows at scale — a single planted crop drinks 1,500–2,500 mm of water across 10–12 months, with peak demand in the grand-growth phase running 1,500–2,000 litres per acre per day. 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 100–150-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 12.5–15 HP (which exceeds the KUSUM subsidy cap in most state schedules — you pay the differential). Subsidy is 60% central + state share (typically 30% UP, 30% Maharashtra), leaving the farmer with 30–40% upfront cost. Heaven Green Energy designs sugarcane-specific solar pumping systems across UP and Maharashtra’s sugar belts.
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 10–12 continuous months before harvest, then a ratoon crop (the regrowth from the cut stubble) runs another 10–11 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 demands 1,500–2,000 L/acre/day even in heat-stressed 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-wise water requirement tables 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 10–11 months and tolerate slightly compressed water demand. Mid-late varieties (Co-86032, CoM-0265 — dominant in Maharashtra’s sugar belt) run 12–13 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 another 30%.
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 lose 0.5–1.0% recovery, which on Maharashtra’s ₹3,400/tonne FRP (Fair and Remunerative Price) base is ₹17–34 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 — typically 70–75% of plant-crop demand in months 1–2, then converges to identical demand from month 3 onward. If your farm runs a 3-ratoon cycle (plant crop + 2–3 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 8–10 irrigations per month in peak phase; black cotton soils across Maharashtra hold water for 12–14 days and need only 4–5 irrigations. The pump itself is sized to peak-day delivery, but the panel-kWp-to-pump-HP ratio you choose for a black soil farm can be tighter (1.5× pump rating) than for sandy soil (1.8–2.0× to handle more frequent run cycles).
Input 4: Water Table Depth
This is the dominant cost driver. A 100-foot water table in the UP belt fits a surface or shallow-submersible AC pump on a 7.5–10 HP rating. A 200–300-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 100–200 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 | Daily demand (L/acre) | Monthly irrigations | Notes |
|---|---|---|---|---|
| Germination | 1–2 | 400–600 | 6–8 | Light, frequent watering — sandy soils |
| Tillering | 3–4 | 800–1,200 | 6–7 | Critical for cane count |
| Grand growth | 5–8 | 1,500–2,000 | 8–10 | Peak — sizing-critical phase |
| Maturation | 9–10 | 800–1,200 | 4–6 | Controlled stress raises sucrose |
| Ripening | 11–12 | 300–500 | 2–3 | Stop 2–3 weeks before harvest |
Source: ICAR-SBI Coimbatore variety water requirement tables and Heaven Green field measurements across 47 sugarcane farms in UP and Maharashtra, 2024–25.
HP by Acreage for Sugarcane
The acreage-to-HP table below assumes flood irrigation, a 100–150-foot water table, and a 10–12-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 | Peak daily demand | KUSUM pump HP | Panel kWp | All-in cost | After 60% subsidy |
|---|---|---|---|---|---|
| 3 acres | 4,500–6,000 L/day | 5 HP AC | 4.8 kWp | ₹3.2–₹3.6 lakh | ₹1.3–₹1.45 lakh |
| 5 acres | 7,500–10,000 L/day | 10 HP AC | 9.0–9.6 kWp | ₹5.5–₹6.0 lakh | ₹2.2–₹2.4 lakh |
| 10 acres | 15,000–20,000 L/day | 12.5–15 HP* | 13.5–15 kWp | ₹8.5–₹9.5 lakh | ₹3.4–₹3.8 lakh + cap differential |
| 20 acres | 30,000–40,000 L/day | 2 × 10 HP** | 18–19 kWp | ₹12–₹13 lakh | Two separate KUSUM units |
*KUSUM Component B caps individual pump capacity at 7.5 HP in some states and 10 HP in UP/Maharashtra/Karnataka under the 2024 schedule — for 12.5 HP and above, you typically pay the cost differential above the subsidised 10 HP component. **A 20-acre farmer is better served filing two separate KUSUM applications for adjacent survey numbers — both subsidised at 60% — rather than one over-cap unit.
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. The water savings are 30–40% relative to flood, which means the solar pump itself can be 25–30% smaller — and the Per Drop More Crop drip subsidy under PMKSY (Pradhan Mantri Krishi Sinchayee Yojana) stacks with KUSUM. In Maharashtra, where the sugar belt has been pushed onto subsurface drip by state mandates in water-stressed talukas, the combined economics are dramatic.
| Metric | Flood + solar pump | Drip + solar pump | Delta |
|---|---|---|---|
| Water use (5 acres) | 12,500 L/day peak | 7,500 L/day peak | −40% |
| 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 (tonnes / acre) | 65–75 t | 80–95 t | +15–25% |
| Sucrose recovery | 10.5–11.5% | 11.0–12.5% | +0.5–1.0% |
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 by 20–25% 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
The published KUSUM Component B subsidy structure under the MNRE PM-KUSUM scheme guidelines is 30% central + 30% state + 30% bank loan + 10% farmer share. In practice the state share varies, the loan is optional, and most sugarcane farmers we work with pay the 30–40% upfront and skip the loan. 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 (incl. drip) |
| Central subsidy (30%) | ₹1.74 lakh | ₹1.77 lakh |
| State subsidy (30%, UP/MH) | ₹1.74 lakh | ₹1.77 lakh |
| Farmer share (40%) | ₹2.32 lakh | ₹2.36 lakh |
| Annual diesel saved | ₹3.50–₹4.00 lakh | ₹2.50–₹3.00 lakh |
| Yield/recovery uplift | — | +₹1.20–₹1.80 lakh |
| Payback | 2.0–2.5 years | 1.5–2.0 years |
Diesel-savings maths: a 10 HP diesel pump running 6–8 hours/day across the 10-month sugarcane season burns 2,200–2,800 L of diesel annually at ₹90/L pump-station price, plus oil and service. The solar pump eliminates that line entirely. Across a 25-year solar pump life (panel warranty 25 yrs, pump motor 5–7 yrs with replacement budgeted), the lifetime fuel saving for a 5-acre farmer is ₹75 lakh–₹1 crore 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 2024–25, six mistakes account for nearly every under-performance complaint. All preventable with a 30-minute site survey.
-
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 6–8 hours/day for 10 months. Panel kWp should be at least 1.5× the pump's HP-to-kW rating to clear cloudy-day shortfalls.
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4
Choosing a vendor not on the KUSUM empanelment list. Non-empanelled vendors disqualify the subsidy entirely. Cross-check on [kusum.online.gov.in](https://kusum.online.gov.in/) before signing.
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5
Sizing for current acreage, not the planned ratoon-cycle expansion. Most sugarcane farmers add 1–2 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 25–30% of the lifetime ROI on the table. File drip under PMKSY 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 (10–11 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 1–2, 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 30–40% water saving — smaller pump qualifies
- Pro +15–25% yield, +0.5–1.0% sucrose recovery
- Pro PMKSY drip subsidy stacks with 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 a 1.5–2.0× panel oversize factor.
- KUSUM filing — state portal application, central + state subsidy reconciliation, document pre-check.
- ALMM-listed panels — tier-1 modules (Adani, Waaree, Tata) 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 PMKSY 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 — sugarcane-specialist callback within 24 hours.
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 peak grand-growth demand of 7,500–10,000 litres per day. If you pair the pump with subsurface drip irrigation, the same farm runs on 7.5 HP. The 10 HP system uses a 9.0–9.6 kWp panel array and costs ₹5.5–₹6.0 lakh all-in, with 60% central + state subsidy bringing your share to ₹2.2–₹2.4 lakh.
How much diesel does a solar pump save on a sugarcane farm per year?
A 10 HP diesel pump running 6–8 hours per day across the 10-month sugarcane season burns 2,200–2,800 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 ₹3.0–₹3.5 lakh in annual savings, plus the yield uplift if drip is added.
Does KUSUM cover sugarcane farmers in Uttar Pradesh and Maharashtra?
Yes — KUSUM Component B (off-grid standalone solar pumps) is open to all farmers across UP and Maharashtra, including sugarcane growers. UP runs the scheme through UPNEDA (Uttar Pradesh New and Renewable Energy Development Agency) with a state share of 30%; Maharashtra runs it through MEDA (Maharashtra Energy Development Agency) under the Magel Tyala Saur Krishi Pump scheme with similar shares. Farmer share is typically 30–40% upfront for both states.
Can I combine drip irrigation subsidy with KUSUM for sugarcane?
Yes — drip irrigation is subsidised separately under PMKSY’s “Per Drop More Crop” component, and the two subsidies stack without conflict. KUSUM covers the solar pump and panels; PMKSY covers the drip emitters, laterals, mains, sub-mains, and venturi/sand-filter installation. Together they cover roughly 70–80% of a combined sugarcane irrigation system on a 5-acre farm. File both applications in parallel through your state agriculture department.
What is the water requirement of sugarcane and how does it affect pump sizing?
Sugarcane needs 1,500–2,500 mm of water across its 10–12-month crop cycle, with peak demand during the grand-growth phase (months 5–8) running 1,500–2,000 litres per acre per day. 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?
Payback runs 2.0–2.5 years for a flood-irrigated 5-acre sugarcane farm, and 1.5–2.0 years if the farmer adds drip irrigation. The faster drip payback comes from three stacked effects: lower upfront cost on the smaller pump, the 15–25% yield uplift, and the 0.5–1.0% sucrose-recovery improvement at the sugar mill. After payback, the system delivers free pumping for the remaining 22–23 years of its 25-year lifetime.
Is a 12.5 HP or 15 HP solar pump available under KUSUM for 10-acre sugarcane farms?
KUSUM Component B caps individual pump subsidy at 7.5 HP in some states and 10 HP in UP, Maharashtra, and Karnataka under the 2024 schedule. Above the cap, you pay the cost differential — so a 12.5 HP pump on a 10-acre farm gets the 10 HP subsidy and you fund the additional 2.5 HP at full cost. Alternatively, a farmer can file two separate KUSUM applications for adjacent survey numbers if the holding qualifies as two distinct land parcels — both then get the full 60% subsidy.
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 early-month water demand by 25–30% in months 1–2 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.
