PM-KUSUM Component-C Feasibility Calculator

1 Choose how solar reaches your pump Component-C Path

Solarise my own pump

Individual Pump Solarisation (IPS)

Your pump gets its own PV array. Estimate equipment cost, subsidy, and your personal payback.

My village / feeder is getting a shared solar plant

Feeder Level Solarisation (FLS)

A larger plant supplies agricultural loads through the feeder. Farmer economics depend on local land-lease or power reliability terms.

2 What is your situation with this shared plant?

I'm being asked to lease my land

Land Lease Income Estimator

A developer or DISCOM wants to install solar panels on your land. Find out how much lease income you'd earn over the contract period.

My pump will get power from the shared plant

Power Reliability Benefit

You don't own anything — your feeder is being solarised. Find out what this means for your pump and whether you save money.

3 Land lease details

Land area available to lease (acres)

Only the area the developer wants — not your total farm.

Lease rate offered (₹ per acre per year)

Typical range: ₹25,000–50,000/acre/year. Ask the developer for their offer.

Your current crop income from this land (₹/acre/year)

Approximate — used to compare lease vs farming income.

Contract duration (years)

Standard PM-KUSUM FLS contracts are 25 years.

Annual lease escalation (%)

Standard escalation clause: 3% per year.

3 Your pump situation

Pump size (HP)

Current energy source for pump

Erratic grid

Power available but unreliable / timed

Diesel generator

No reliable grid — running on diesel

Daily pump hours (current)

2 Enter the field record ASSUMPTIONS ▾

Pump size (HP)

Check the motor nameplate.

Motor type / efficiency

Old submersible

Efficiency 0.55

Centrifugal

Efficiency 0.65

BEE 5-star

Efficiency 0.70

Daily operating hours

Average during irrigation season.

How are you currently billed for this pump?

Flat-rate (₹/HP/month)

Fixed monthly bill regardless of units used — common in Bihar, UP, MP

Metered (₹/unit)

Bill based on actual kWh consumed — or diesel cost if off-grid

Flat rate (₹ per HP per month)

Bihar: ₹100/HP/month · Haryana: ₹15/HP/month

Land available for panels (sq ft)

~100 sq ft needed per kWp of solar panels

⚙ Advanced — see & edit every constant used in the calculation ▾

4 Your answers Live Result

Kitna lagega? — What you pay

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Kitna bachega? — Monthly savings

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Kab wapas milega? — Payback

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litres of diesel saved every year

🌳

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trees-worth of CO₂ absorbed every year

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solar panels needed for your pump

📐

Space needed

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Technical details — formulas & full breakdown ▾

System size—

Pump load—

Daily energy need—

Gross cost (before subsidy)—

Government subsidy—

Net cost (what you pay)—

Annual solar units generated—

Annual savings—

Sun hours (NASA POWER)—

Benchmark rate used—

Methodology & sources

Pump load (kW) = HP × 0.746 ÷ motor efficiency · motor efficiency per MNRE PM-KUSUM Component-C guidelines (0.55 / 0.65 / 0.70 by type)
Daily energy (kWh/day) = pump load × daily operating hours
PV system size (kWp) = daily energy ÷ (sun hours × system efficiency) · system efficiency 0.75 = MNRE BOS default · sun hours from NASA POWER live API (ALLSKY_SFC_SW_DWN, climatological annual average)
Gross cost = PV size (kWp) × 1000 × benchmark ₹/Wp · MNRE 2024 benchmark: ₹45/Wp (≤3 kWp), ₹40/Wp (3–10 kWp)
Subsidy = Central CFA 30% (MNRE PM-KUSUM 2023 guidelines) + state top-up where verified
Savings — flat-rate billing = flat ₹/HP/month × HP × 12 · flat charge assumed to be avoidable on full solarisation · Bihar: ₹100/HP/month (verified, Bihar DISCOM tariff order FY2024-25) · Haryana: ₹15/HP/month (verified, HERC order FY2025-26)
Savings — metered billing = annual units generated × ₹/unit tariff
CO₂ proxy = annual units × 0.716 kg CO₂/kWh · CEA CO₂ Baseline Database 2023 (India national average emission factor)
Land need = PV size × 100 sq ft/kWp (approximate, ground-mounted, standard panel + row spacing)
State subsidy top-up data: Bihar and Haryana verified against published sources. All other states show central 30% only and are explicitly flagged as unverified — do not rely on state top-up estimates for those states.
Worked example: Kochgawan village, Nalanda district, Bihar · 5 HP old submersible pump · 3.75 hrs/day · flat-rate billing ₹100/HP/month · solar data from this project's own NASA POWER 16-year dataset (annual avg GHI: 4.657 kWh/m²/day)