Solar water pump subsidy in Tamil Nadu 2026 — PM-KUSUM farmer guide, costs, application

**PM-KUSUM overview:** Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan — 2019 launch, 3 components. Component A — feeder-level solar (2 MW+ ground plant). Component B — standalone off-grid solar pumps (3-10 HP). Component C — grid-connected pump solarisation OR feeder solarisation.

**Component B focus (this article):** standalone off-grid solar water pumps for farmers without grid electricity or willing to disconnect grid. Central subsidy 30% + state 30% = 60% total. Farmer 10% own funds + 30% bank loan (or 40% own funds no loan).

**Eligible pump sizes 2026:** 2 HP, 3 HP, 5 HP, 7.5 HP, 10 HP. AC or DC pump both. Submersible or surface (open well) both. Original diesel/electric pump replacement OR new borewell — both eligible.

**Cost matrix (turnkey installed, MNRE benchmark 2026):** 2 HP AC surface — ₹1.65L, subsidy ₹99k, farmer ₹66k. 3 HP AC submersible — ₹2.05L, subsidy ₹1.23L, farmer ₹82k. 5 HP AC submersible — ₹3.05L, subsidy ₹1.83L, farmer ₹1.22L. 7.5 HP — ₹4.25L, subsidy ₹2.55L, farmer ₹1.70L. 10 HP — ₹5.60L, subsidy ₹3.36L, farmer ₹2.24L.

**7.5 HP solar water pump subsidy in Tamil Nadu 2026 (most-asked size):** benchmark cost ₹4.25L for a 7.5 HP AC submersible with ~10 kWp DCR panel array. Central share 30% = ₹1.27L, TN state share 30% = ₹1.27L, total subsidy ₹2.55L. Farmer pays ₹1.70L (₹42,500 own funds + ₹1.27L bank loan under the 10/30 split). With the TN top-up of ₹20,000-25,000 for 7.5 HP, small and marginal farmers land at roughly ₹1.45-1.50L net. Typical delivery: 300-350 ft borewell, 60,000-80,000 litres/day at 6 sun-hours — enough for 5-8 acres of paddy or banana.

**5 HP vs 7.5 HP vs 10 HP — which to apply for:** 5 HP suits up to 250 ft head and 3-5 acres (farmer net ₹1.22L). 7.5 HP suits 250-400 ft head and 5-8 acres (farmer net ₹1.70L). 10 HP suits 400 ft+ head or 8+ acres and drip clusters (farmer net ₹2.24L). Oversizing is the most common rejection trigger — sanction is based on the water certificate discharge and land extent, not on request.

**System components:** solar panels (2-10 kWp Mono PERC or TOPCon DCR) + solar pump controller (VFD-based MPPT tracker) + submersible or surface pump (Grundfos, Shakti, CRI, Kirloskar approved) + mounting structure + electrical panel + water level sensor + 5-year warranty.

**Eligibility checklist:** (1) Own agricultural land (patta or lease agreement 5+ years). (2) Existing borewell/openwell with water availability certificate. (3) No grid electricity connection to pump (or agreement to disconnect). (4) Aadhar + PAN + bank account. (5) Small/marginal farmer preferred (2 acres or less) — priority allocation.

**TN state top-up over central scheme:** TN Solar Energy Corporation additional ₹10,000-25,000 per pump depending on HP. Effective total subsidy 65-70% for small farmers.

**Application process (step-by-step):** (1) TN Solar Energy Corporation website — PM-KUSUM portal login (kusum.mnre.gov.in). (2) Land documents + water certificate + Aadhar upload. (3) Empaneled vendor selection (SVN listed) + quote upload. (4) Application review 15-20 days. (5) Sanction letter + demand letter for farmer contribution. (6) Payment + loan sanction (Canara/PSB Bank tie-up). (7) Vendor installation 20-25 days. (8) Third-party inspection + commissioning. (9) Subsidy release to vendor account 30-45 days post-install.

**Timeline total:** 3-4 months application to power-on. SVN experience: application-to-commissioning median 92 days for TN Perambalur/Ariyalur farmers.

**Common rejection reasons + fixes:** (1) Land document mismatch (patta vs actual holding) → land record correction at Village Administrative Office. (2) Water certificate expired → renew at Agricultural Engineering Department. (3) Existing grid connection undeclared → apply for disconnection first, get NOC. (4) Vendor not empaneled → switch to MNRE-approved vendor.

**Post-install obligations:** 5-year mandatory operation (subsidy clawback if system dismantled). Annual output reporting to Agri Engineering dept. Water usage log (some districts). SVN AMC handles compliance reporting.

**Financial return real numbers (5 HP system, small marginal farmer):** total cost ₹3.05L, farmer out-of-pocket ₹1.22L. Old diesel/electric expense ₹6,000-10,000/month = ₹72k-1.2L/year. Payback 12-18 months own money. 20-year lifetime savings ₹15-22L.

**Warranty structure:** solar panels 25-year performance (Waaree/Vikram DCR). Pump 5-year (Shakti, CRI, Grundfos). Controller 5-year. Structure 10-year anti-corrosion. AMC first 5 years included in MNRE scheme (vendor obligation).

**Farmer red flags to avoid:** (1) Vendor asking full payment upfront before subsidy sanction (fraud). (2) Non-DCR panels quoted (subsidy ineligible). (3) Below-MNRE-benchmark quote (usually inferior components). (4) No third-party inspection promised (post-install subsidy risk).

**SVN PM-KUSUM footprint TN:** 240+ pumps installed 2020-2026 across Perambalur, Ariyalur, Karur, Namakkal, Pudukottai, Salem districts. Application-to-commissioning handling end-to-end. Ground crew includes agri engineer + electrician + civil supervisor.