Fan-pad greenhouse vs natural polyhouse — vendor quotation par yeh decision ₹10–15 lakh aur ₹1–3 lakh/year bijli swing karta hai. 2026 mein MIDH/NHB subsidy dono structure par milti hai, par norm alag hai: NVPH ₹844–1,060/sqm, fan-pad ₹1,400–1,650/sqm. Galat structure choose kiya to subsidy mil bhi jaye, profit nahi.
Yeh guide cost comparison, crops, electricity, aur summer climate zones (North plains, Rajasthan, South humid) ke liye decision matrix deti hai.
Related: polyhouse profit & cost · best crops · Haryana 65% subsidy.
DPR mein jo structure approve hua wahi banao. NVPH approve karke fan-pad add karna = subsidy reject. Apply + bank sanction before construction — polyhouse subsidy guide.
Structure basics — natural vs active cooling
| Feature | Natural ventilated polyhouse (NVPH) | Fan-and-pad greenhouse |
|---|---|---|
| Ventilation | Ridge vents, side roll-ups, stack effect | Exhaust fans + evaporative cooling pads |
| Cooling | Passive + fogging / shade net | Active — pulls hot air through wet pad |
| Capital (market/acre) | ₹25–40 lakh | ₹35–50 lakh |
| Subsidy norm/sqm | ₹844–1,060 | ₹1,400–1,650 |
| Running cost | Lower power | ₹8K–25K/month summer power typical |
| Skill | Medium | Higher — pad maintenance, humidity control |
Natural polyhouse = polyfilm + GI structure + ventilation openings — no forced cooling.
Fan-pad = same shell + fan bank + cellulose pad + water circulation pump.
Cost comparison — 4,000 sqm (≈1 acre)
Market spend (before subsidy)
| Item | NVPH | Fan-pad |
|---|---|---|
| Structure + film | ₹25–35L | ₹35–45L |
| Irrigation (drip) | ₹2–4L | ₹2–4L |
| Planting material Year 1 | ₹1–3L | ₹1–3L |
| Total indicative | ₹28–42L | ₹38–52L |
Subsidy on norm (50% general example)
| NVPH @ ₹844/sqm | Fan-pad @ ₹1,500/sqm | |
|---|---|---|
| Eligible base | ₹33.76L | ₹60.00L |
| 50% subsidy | ₹16.88L | ₹30.00L |
| State top-up (e.g. Haryana +15%) | ₹21.94L | ₹39.00L |
Higher norm = more rupees subsidy on fan-pad — par farmer cash gap bhi zyada ho sakta hai kyunki market price bhi upar hai.
Effective subsidy = subsidy ÷ actual vendor bill. Fan-pad bill zyada hone par percentage 40–50% effective common — 35–40% reality NVPH par bhi apply hota hai.
Crops — kaun kahan fit
| Crop | NVPH | Fan-pad |
|---|---|---|
| Coloured capsicum | ✅ Primary choice (fogging in heat) | ✅ Summer production hot zones |
| Seedless cucumber | ✅ Fast cycles | Optional |
| Cherry tomato | ✅ | Heat waves — fan-pad helps |
| Dutch rose / gerbera | ⚠️ Risk in plains summer | ✅ Preferred |
| Strawberry | Winter belt NVPH | Peak heat — fan-pad or high altitude |
| Nursery / seedlings | ✅ | Overkill unless summer batch |
Rule: Crop market price electricity + extra capital cover kare. Rose fan-pad par ₹12–18L/acre net possible — par buyer contract pehle. Capsicum NVPH par literature ~₹18.14L net/acre best-case — beginner conservative rakho.
Electricity — summer zones
North India — Haryana, Punjab, UP, Rajasthan
- May–June outdoor 42–48°C common
- NVPH internal 38–42°C without cooling — capsicum flower drop risk
- Mitigation NVPH: shade paint, 50% shade net double layer short term, high-pressure fogging, evening ventilation
- Fan-pad: target 28–32°C band — 6–8 hours/day fans summer mein
| Zone | NVPH verdict | Fan-pad verdict |
|---|---|---|
| Haryana capsicum | ✅ with fogging | If May harvest must |
| Rajasthan dry heat | NVPH + strong ventilation | Fan-pad for summer rose |
| HP/UK hills | NVPH usually enough | Rare fan-pad |
Tariff planning: ₹8–12/unit commercial connection assume karke DPR mein ₹1.5–3L/year power line item daalo.
South & humid coast — Kerala, TN, coastal AP
- Humidity high — disease pressure zyada NVPH mein
- Fan-pad humidity control help karta hai agar exhaust sizing sahi ho
- Kai farmers NVPH + better IPM se chalate hain — fan-pad tab jab export rose contract ho
Northeast / hills
- Milder summer — NVPH default
- Minimum area norms lower (1,000 sqm) — starter units popular
Subsidy eligibility — same scheme, different slab
Both qualify under protected cultivation / greenhouse components:
- NHM/MIDH — state portal
- NHB — 50% credit-linked, ceiling ~₹56L–1Cr
- Haryana — 65% stacked on norm
Shade net alag norm (~₹710/sqm) — full polyhouse cost par leafy-only crop ROI weak.
Decision matrix — 2026
| Your situation | Build |
|---|---|
| First polyhouse, capsicum/cucumber, budget tight | NVPH |
| Export rose, gerbera, summer harvest mandate | Fan-pad |
| Land in hot plain, no 3-phase power yet | Delay fan-pad — get connection cost in quote |
| SC/ST top-up state (85–95%) | Higher norm helps fan-pad cash gap |
| 1,000 sqm starter learning | NVPH or shade net |
Operating differences
| Task | NVPH | Fan-pad |
|---|---|---|
| Pad cleaning | — | Monthly algae check |
| Fan belts | — | Quarterly |
| Humidity | Weather-driven | Controller settings |
| Pest | Aphid in calm air | Thrips if humidity wrong |
Training: KVK ₹5–10K course — structure-specific.
Mistakes
- Fan-pad banwaya, bijli connection nahi — summer shutdown
- NVPH mein rose summer — flower quality fail
- Subsidy approve NVPH, vendor fan-pad bill — inspection fail
- Bijli bill DPR mein zero — bank EMI default Year 2
Bottom line
Natural polyhouse = default for capsicum, cucumber, cherry tomato jab fogging + ventilation manage ho. Fan-pad greenhouse = active cooling tax (₹10L+ capital, ₹1–3L/year power) jab crop summer heat se bachna ho — rose, gerbera, peak strawberry.
Subsidy dono par — par profit = crop + power + management, structure name se nahi.
Frequently asked questions
What is the cost difference between fan-pad greenhouse and natural polyhouse?
Natural ventilated polyhouse (NVPH) typically costs ₹25–40 lakh per acre in the market; fan-and-pad hi-tech greenhouses run ₹35–50 lakh per acre. Government subsidy norms are roughly ₹844–1,060/sqm for NVPH vs ₹1,400–1,650/sqm for fan-pad — verify on nhb.gov.in and your state horticulture portal.
Which crops need fan-pad instead of natural polyhouse?
Dutch rose, gerbera, summer capsicum production in hot plains, and some strawberry setups in peak heat often need active cooling. NVPH suits coloured capsicum, seedless cucumber, and cherry tomato in moderate climates with fogging and ventilation.
How much electricity does a fan-pad greenhouse use?
Indicative summer bills range ₹8,000–25,000 per month for a ~4,000 sqm unit depending on pad area, fan HP, run hours, and tariff. Budget electricity in your DPR — subsidy does not pay power bills.
Do both structures qualify for the same polyhouse subsidy?
Yes under NHM/MIDH and NHB protected cultivation components, but subsidy is calculated on the structure-specific cost norm — fan-pad has a higher norm so absolute subsidy rupees can be higher while farmer share on extra capital may still hurt cash flow.
Which is better in Haryana, Rajasthan, or South India summer?
Hot dry summers (Rajasthan, Haryana May–June): NVPH works with shade paint and fogging for many crops; fan-pad if you must harvest through peak heat. Humid coasts: NVPH airflow often enough; fan-pad if disease control needs lower humidity. Always match structure to approved DPR crop.
