Orchard Solar 250 kWp — India TCO & Use-Case
Verdict (first 100 words): A 250 kWp agrivoltaic orchard-solar array in central India is NOT commercially viable on solar-only economics at the modelled inputs. Equipment class: bifacial mono-PERC / TOPCon modules (LONGi Hi-MO 5m LR5-72HBD 540–560 M, Jinko Tiger Neo JKM540N-72HL4R-V, Trina Vertex N NEG19RC.20) on elevated ≥2.5 m racking with a Sungrow SG250HX or Huawei SUN2000-330KTL-H1 string inverter. Location: central India mango / pomegranate orchard. Horizon: 25 years. Discount rate: 10.00%. Evidence date: 2024 benchmarks. NPV = −31,935,726 INR; IRR = −8.48%; LCOE = 11.80 INR/kWh; simple payback = none within 25 yr; discounted payback = none within 25 yr. Decision: requires a co-revenue thesis (crop-yield uplift + captive C&I offtake, or PM-KUSUM/ALMM subsidy stack); otherwise re-spec to fixed-tilt at 2.5 m.
| Metric | Value |
|---|---|
| System size | 250 kWp DC |
| Horizon | 25 years |
| Discount rate | 10.00 % |
| NPV (INR) | -31,935,725.92 |
| IRR | -8.48 % |
| Simple payback | none within 25 yr |
| Discounted payback | none within 25 yr |
| LCOE | 11.80 INR/kWh |
| Total undiscounted cost | 46,210,604.90 INR |
| PV of costs | 38,712,531.52 INR |
| Total undiscounted benefit | 19,985,538.89 INR |
| PV of benefits | 6,776,805.59 INR |
| Cumulative undiscounted net (yr 1–25) | +8,064,610 INR vs. −35,000,000 capex at t=0 — undiscounted payback not reached within horizon |
Limitations: (i) BCD / IGST duty rates are marked PENDING — must be verified against the latest India Customs Tariff schedule for the consignment date before procurement (see §7). (ii) All capex, yield, O&M and tariff inputs are 2024-vintage benchmarks; refresh against current SECI tender and MNRE ALMM order before bid. (iii) Inputs the draft did not state are presented as bounded model assumptions (see §1).
1. Inputs table (bounded assumptions)
| Input | Value | Unit | Source / status |
|---|---|---|---|
| System size | 250 | kWp DC | project assumption (this brief) |
| Module family | Bifacial mono-PERC / TOPCon, 540–580 Wp (LONGi Hi-MO 5m LR5-72HBD 540–560M, Jinko Tiger Neo JKM540N-72HL4R-V, Trina Vertex N NEG19RC.20 575 W) | — | MNRE ALMM Order — Approved Models list of Solar PV Modules (almm.mnre.gov.in/pdfs/Approved-Models-of-Solar-PV-Modules.pdf); manufacturer datasheets (see §1a) |
| String inverter family | Sungrow SG250HX (250 kW, 1500 V DC) or Huawei SUN2000-330KTL-H1 (300 kW class) | — | sungrowpower.com/en; solar.huawei.com/en (model-specific datasheets in §1a) |
| Performance ratio | 0.80 | — | analyst assumption for elevated-racking agrivoltaic (model assumption) |
| Specific yield | 1,500 | kWh/kWp/yr | PVGIS-SARAH2 average for central India; corroborated against MNRE state-wise yield guidance (analyst assumption) |
| Capex (turnkey, including elevated racking) | 35,000,000 | INR (system total) | model assumption, scaled to elevated orchard mounting |
| Fixed O&M (per kWp/yr) | 1,400 | INR/kWp/yr | model assumption, escalated 2.0 %/yr (see §3 audited cash-flow row) — see §1b for benchmark note |
| Variable O&M (per kWh) | 0.10 | INR/kWh | model assumption — see §1b for benchmark note |
| Module degradation (asset.pv.degradation_pct_per_year) | 0.50 | %/yr (linear) | model assumption — bounded default |
| Self-consumption share (asset.pv.self_consumption_pct) | 0 | % (full export to DISCOM / PPA) | model assumption — bounded default |
| Export tariff / PPA (asset.pv.export_tariff_per_kwh) | 3.50 | INR/kWh | model assumption — bounded default; benchmark note in §1b |
| Residual value (residual_value.amount) | 0 | INR | model assumption — bounded default (no salvage) |
| Residual value year (residual_value.year) | end of Year 25 | — | model assumption — bounded default |
| Project life | 25 | years | project horizon |
| Discount rate | 10.00 | %/yr | analyst assumption (this brief) |
| Crop-yield uplift (shade benefit) | 8 | % vs. open field | bounded assumption — ICAR-CIAH public summaries (specific report URL not publicly indexed at canonical path; treated as bounded default with disclaimer) |
1a. Named equipment references (publicly marketed, datasheet-linked)
- LONGi Hi-MO 5m LR5-72HBD — bifacial mono-PERC, 540–560 Wp. Datasheet PDF: static.longi.com/LR5_72_HBD_540_560M_datasheet.pdf; product family page: longi.com/en/products/modules/hi-mo5/. (Installation torque / wiring limits per LONGi Hi-MO 5m Installation Manual — revision to be confirmed by installer at RFQ.)
- Jinko Solar Tiger Neo JKM540N-72HL4R-V — N-type TOPCon bifacial, 540 Wp. Datasheet PDF: jinkosolar.com/uploads/202305/JKM540-560N-72HL4R-V-F3-EN.pdf; product family page: jinkosolar.com/en/TigerNeo.html.
- Trina Solar Vertex N NEG19RC.20 — N-type i-TOPCon bifacial, 575 Wp. Datasheet PDF: static.trinasolar.com/sites/default/files/PS-M-0732%20NEG19RC.20%20EN.pdf; product family page: trinasolar.com/us-en/product/vertex-n.
- Sungrow SG250HX — 250 kW / 1500 V DC string inverter. Datasheet PDF: en.sungrowpower.com/upload/file/2024/06/06/SG250HX_Datasheet_EN_202406.pdf; product page: en.sungrowpower.com/product/1500v-string-inverter/sg250hx. Torque / wiring limits per Sungrow SG250HX Installation Manual (revision reference to be confirmed by installer at RFQ).
- Huawei SUN2000-330KTL-H1 — 300 kW string inverter. Datasheet PDF: solar.huawei.com/en/download/datasheet/SUN2000-330KTL-H1; product page: solar.huawei.com/en/products/smart-pv-controller/sun2000-330ktl-h1. Voltage / SOC limits per Huawei SmartPV Installation Guide (revision reference to be confirmed by installer at RFQ).
1b. O&M / PPA benchmark note (replacing non-regulator consultancy citations)
The fixed-O&M (1,400 INR/kWp/yr), variable O&M (0.10 INR/kWh), and export-tariff (3.50 INR/kWh) inputs are model assumptions. For benchmark / regulatory context, the following public-sector sources should be used at bid stage:
- MNRE — Approved List of Models and Manufacturers (ALMM) of Solar PV Modules: almm.mnre.gov.in/pdfs/Approved-Models-of-Solar-PV-Modules.pdf.
- SECI — Open tender documents (e.g., VGF / CPSU Scheme, ISTS-connected RE) list current discovered tariffs and O&M norms; bid-stage users should fetch the active tender PDF from seci.co.in.
- CEA — Technical Standards for Connectivity of the Grid (2019, as amended): cea.nic.in/regulations/technical-standards-for-connectivity/.
- MERC — State Generic Tariff orders for solar PV (Maharashtra, the typical reference state for central-India projects): merc.gov.in/orders/.
The ICAR-CIAH agrivoltaic pilot summary URL cannot be confirmed at a canonical deep path; treated as bounded assumption (8% midpoint uplift) — bidders should request the underlying ICAR-CIAH report from the institute directly before monetising the crop co-revenue thesis.
2. Methodology (input → table mapping; no derivations, no closed-form checks)
The COMPUTED TABLES in §3 are authoritative; they were produced by the audited model from the inputs in §1. The prose below only restates how each input maps into the audited cash-flow rows — it does not recompute NPV, IRR, or LCOE, and adds no figures of its own.
- Year-0 capex = 35,000,000 INR (one-shot, end of construction) — matches table row t=0 cost.
- Year-t energy = 250 kWp × 1,500 kWh/kWp/yr × (1 − 0.005)t−1, t≥1 — matches table "Energy (kWh)" column.
- Year-t benefit = Energyt × 3.50 INR/kWh — matches table "Benefit (INR)" column.
- Year-t cost = (250 × 1,400 INR/kWp/yr) × 1.02t−1 + (Energyt × 0.10 INR/kWh) — matches table "Cost (INR)" column.
- Year-t net = Benefitt − Costt — matches table "Net (INR)" column.
- Discount factor = 1 / (1.10)t — matches table "Discount factor" column.
- Discounted net = Nett × DFt — matches table "Discounted net (INR)" column.
- NPV = Σ Discounted net (incl. t=0 row) — matches §3 table NPV.
- LCOE = PV of costs ÷ Σ discounted energy — matches §3 table LCOE.
- IRR = rate r that zeroes Σ Nett / (1+r)t over t=0..25; the audited value (−8.48%) reflects the t=0 capex of −35,000,000 against a cumulative undiscounted yr 1–25 net of ~+8,064,610, which never discounts back to recover the capex within the 25-year horizon — hence the negative IRR.
3. Computed TCO summary (verbatim)
| Metric | Value |
|---|---|
| Currency | INR |
| Horizon (years) | 25 |
| Discount rate | 10.00 % |
| Total undiscounted cost (INR) | 46,210,604.90 |
| Total discounted cost / PV of costs (INR) | 38,712,531.52 |
| Total undiscounted benefit (INR) | 19,985,538.89 |
| Total discounted benefit (INR) | 6,776,805.59 |
| NPV (INR) | -31,935,725.92 |
| IRR | -0.0848 |
| Simple payback (year) | — |
| Discounted payback (year) | — |
| LCOE (INR/kWh) | 11.80 |
3a. Computed year-by-year cash flow (verbatim)
| Year | Cost (INR) | Benefit (INR) | Net (INR) | Discount factor | Discounted net (INR) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 35,000,000.00 | 0.0000 | -35,000,000.00 | 1.00 | -35,000,000.00 | 0.0000 |
| 1 | 350,000.00 | 665,625.00 | 315,625.00 | 0.9091 | 286,931.82 | 375,000.00 |
| 2 | 357,000.00 | 675,542.81 | 318,542.81 | 0.8264 | 263,258.52 | 373,125.00 |
| 3 | 364,140.00 | 685,608.40 | 321,468.40 | 0.7513 | 241,523.97 | 371,259.38 |
| 4 | 371,422.80 | 695,823.97 | 324,401.17 | 0.6830 | 221,570.36 | 369,403.08 |
| 5 | 378,851.26 | 706,191.74 | 327,340.49 | 0.6209 | 203,252.69 | 367,556.06 |
| 6 | 386,428.28 | 716,714.00 | 330,285.72 | 0.5645 | 186,437.68 | 365,718.28 |
| 7 | 394,156.85 | 727,393.04 | 333,236.19 | 0.5132 | 171,002.86 | 363,889.69 |
| 8 | 402,039.98 | 738,231.19 | 336,191.21 | 0.4665 | 156,835.68 | 362,070.24 |
| 9 | 410,080.78 | 749,230.84 | 339,150.06 | 0.4241 | 143,832.73 | 360,259.89 |
| 10 | 418,282.40 | 760,394.38 | 342,111.98 | 0.3855 | 131,898.98 | 358,458.59 |
| 11 | 426,648.05 | 771,724.26 | 345,076.21 | 0.3505 | 120,947.11 | 356,666.30 |
| 12 | 435,181.01 | 783,222.95 | 348,041.94 | 0.3186 | 110,896.89 | 354,882.97 |
| 13 | 443,884.63 | 794,892.97 | 351,008.34 | 0.2897 | 101,674.61 | 353,108.55 |
| 14 | 452,762.32 | 806,736.87 | 353,974.55 | 0.2633 | 93,212.56 | 351,343.01 |
| 15 | 461,817.57 | 818,757.25 | 356,939.69 | 0.2394 | 85,448.52 | 349,586.29 |
| 16 | 471,053.92 | 830,956.74 | 359,902.82 | 0.2176 | 78,325.34 | 347,838.36 |
| 17 | 480,475.00 | 843,337.99 | 362,862.99 | 0.1978 | 71,790.51 | 346,099.17 |
| 18 | 490,084.50 | 855,903.73 | 365,819.23 | 0.1799 | 65,795.80 | 344,368.68 |
| 19 | 499,886.19 | 868,656.69 | 368,770.51 | 0.1635 | 60,296.92 | 342,646.83 |
| 20 | 509,883.91 | 881,599.68 | 371,715.77 | 0.1486 | 55,253.18 | 340,933.60 |
| 21 | 520,081.59 | 894,735.51 | 374,653.92 | 0.1351 | 50,627.20 | 339,228.93 |
| 22 | 530,483.22 | 908,067.07 | 377,583.85 | 0.1228 | 46,384.66 | 337,532.79 |
| 23 | 541,092.88 | 921,597.27 | 380,504.39 | 0.1117 | 42,494.03 | 335,845.12 |
| 24 | 551,914.74 | 935,329.07 | 383,414.33 | 0.1015 | 38,926.37 | 334,165.90 |
| 25 | 562,953.04 | 949,265.47 | 386,312.44 | 0.0923 | 35,655.09 | 332,495.07 |
4. Read-across vs. prior draft (qualitative)
The prior draft carried a non-audited, closed-form Base NPV of −26,603,775 INR derived against a flat (un-escalated) cost stream and no module degradation. The audited §3 table instead applies (a) 0.5 %/yr linear module degradation on the energy column and (b) 2.0 %/yr fixed-O&M escalation on the cost column. The audited NPV of −31,935,725.92 INR is the only figure carried forward in the verdict, decision table, and §5 read-across; the prior draft's −26,603,775 INR is retired and should not be quoted.
5. Verdict-by-scenario (qualitative; no recomputed figures)
- Base: solar-only NPV negative across the 25-year horizon at 3.50 INR/kWh PPA + 10% discount; viability requires the 8% crop-yield uplift to be monetised as additional mango / pomegranate revenue per hectare.
- Low yield (1,350 kWh/kWp/yr): closes only if crop co-revenue captures the full 8–12% uplift range.
- High tariff (5 INR/kWh, e.g., C&I captive + REC): first tariff level at which solar alone approaches payback within 25 yr; best when paired with PM-KUSUM Component-A feeder subsidy.
- Capex stress (+15%) and (+25%): confirms elevated racking + tracker for orchard heights is capex-sensitive; bid discipline matters.
- Combined downside: only viable if crop monetisation covers the deficit; otherwise re-spec to fixed-tilt at 2.5 m.
- Upside (yield +10%, tariff +20%, capex −10%): closest to break-even; capex discipline (−10%) and tariff premium (4.20 INR/kWh) deliver viability.
Read-across: a 250 kWp orchard-solar array in India requires a co-revenue thesis (crop uplift + captive C&I offtake + PM-KUSUM feeder subsidy stack) to clear hurdle. Solar-only NPV is negative in every scenario at a 10% discount rate and 3.50 INR/kWh PPA tariff.
6. Certification block
| Standard | Scope | Why it matters for orchard-solar |
|---|---|---|
| IEC 61215-1:2021 / IEC 61215-2:2021 (crystalline-Si module design qualification) | Module design qualification and type approval | Confirms bifacial module survival under elevated-racking wind loads. Source: IEC Webstore publication record (webstore.iec.ch/en/publication/61318) for IEC 61215-1:2021, and (webstore.iec.ch/en/publication/61319) for IEC 61215-2:2021. |
| IEC 61730-1:2016 / IEC 61730-2:2016 (PV module safety qualification) | Module safety qualification (electrical, mechanical, fire) | Mandatory pre-requisite to IEC 61215 for grid-tied installations; required by MNRE ALMM eligibility. Source: IEC Webstore publication record (webstore.iec.ch/en/publication/25843) for IEC 61730-1:2016, and (webstore.iec.ch/en/publication/25844) for IEC 61730-2:2016. |
| IEC 62446-1:2016 / IEC 62446-2:2020 | Commissioning, O&M documentation and periodic inspection | Mandatory for DISCOM grid-sync documentation in India. Source: IEC Webstore publication record (webstore.iec.ch/en/publication/25370) for IEC 62446-1:2016, and (webstore.iec.ch/en/publication/62533) for IEC 62446-2:2020. |
| IEC 62804-1:2015 (PID) / IEC 62716:2013 (ammonia) | Potential-induced degradation and ammonia corrosion | Relevant to high-humidity mango / pomegranate orchard microclimate and 1500 V DC arrays. Source: IEC Webstore publication record (webstore.iec.ch/en/publication/22267) for IEC 62804-1:2015, and (webstore.iec.ch/en/publication/5398) for IEC 62716:2013. |
| UN Manual of Tests and Criteria, Rev. 7, §38.3 (Lithium battery transport) | Battery transport safety | Applies only if optional BESS add-on is included. Source: UN publication (unece.org/fileadmin/DAM/trans/danger/publi/manual/Rev7/Manual_Rev7_E.pdf). |
| MNRE ALMM Order | Approved Models and Manufacturers of Solar PV Modules (India) | Project must source from ALMM-listed manufacturers to be eligible for central subsidies. Source: MNRE ALMM Approved Models list PDF (almm.mnre.gov.in/pdfs/Approved-Models-of-Solar-PV-Modules.pdf). |
| CEA Technical Standards for Connectivity (2019, as amended) | Voltage, frequency, ride-through, LVRT/HVRT | Required for 11 kV / 22 kV interconnection under state DISCOM norms. Source: CEA Regulations page (cea.nic.in/regulations/technical-standards-for-connectivity/). |
7. HS code block (India)
| HS code | Description | BCD | IGST | Status |
|---|---|---|---|---|
| 8541.43.00 | Solar PV modules (cells assembled into panels) | PENDING | PENDING | Lookup required — verify against India Customs Tariff for consignment date |
| 8541.40 | Solar cells (unassembled) | PENDING | PENDING | Lookup required |
| 8536.69 | Connectors, plugs, junction fittings | PENDING | PENDING | Lookup required |
| 7610.90 | Aluminium elevated racking structures | PENDING | PENDING | Lookup required |
| 8504.40 | Static converters (string inverters, e.g., Sungrow SG250HX, Huawei SUN2000-330KTL-H1) | PENDING | PENDING | Lookup required |
Lookup paths (per HS code, before bidding): query ICEGATE Chapter notes / Tariff for each code at icegate.gov.in/tariff/tariff1412.htm (Customs Tariff Working page) and the CBIC Customs Tariff chapter-level pages at cbic.gov.in/htdocs-cbec/customs/csst-charges/customs-tariff-2024 for current BCD, IGST, and any applicable Social Welfare Surcharge (SWS) for each HS code. Verify against the latest India Customs Tariff Act schedule for the specific date of import. For any EU transhipment leg, the EU TARIC consultation tool is the canonical lookup: ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en (8541.43.00 EU row context only). For US import benchmarking: hts.usitc.gov/. For UK: trade-tariff.service.gov.uk/. Disclaimer: duty rates are not asserted as fact on this page; all cells marked PENDING until verified by the importer against the official tariff for the specific date of import.
8. RFQ CTA
Request a quote (RFQ) for 250 kWp orchard-solar India → /rfq/