1 MW Solar Plant Cost in India: 2026 Breakdown

Direct answer

A 1 MW solar plant in India is priced by site survey on Sun Wave Technologies' CAPEX reference ladder: Rs 23,000 per kW at 100 kW and Rs 22,000 per kW at 500 kW for qualifying rooftop projects, with 1 MW-class rooftop projects priced progressively below the 500 kW rate once engineering scope is fixed. A 1 MW plant generates 14-17.5 lakh units a year depending on location, saves Rs 1.1-1.7 crore a year at industrial tariffs of Rs 8-10 per unit, and pays back in roughly 3-5 years for a tax-taking business once 40% accelerated depreciation is claimed. For grid-approval purposes, the CTUIL benchmark from 1 September 2026 is Rs 3.5 crore per MW.

TL;DR: Reference ladder Rs 23,000/kW at 100 kW, Rs 22,000/kW at 500 kW, 1 MW+ priced by survey | 14-17.5 lakh units/year | Rs 1.1-1.7 crore annual savings at Rs 8-10/unit | ~1 lakh units and Rs 9-14 lakh saved per month | payback ~3-5 years with accelerated depreciation | area: 4-5 acres ground or ~80,000 sq ft roof.

A 1 MW plant is the scale at which industrial solar stops being a bill-reduction measure and becomes a power asset: it covers the full daytime load of most two- and three-shift factories, opens open-access and group-captive options, and changes how your finance team models the investment. This guide covers what drives the cost, what the plant earns, and how the decision differs from a 100-500 kW rooftop project.

How 1 MW pricing works on the reference ladder

Sun Wave's reference pricing is scale-based: Rs 23,000 per kW at 100 kW and Rs 22,000 per kW at 500 kW for qualifying CAPEX rooftop projects, ex-GST, with intermediate capacities priced progressively between the two points and larger rooftop projects quoted below the 500 kW rate after the site survey fixes the engineering scope. What moves a 1 MW quote off the ladder:

For the smaller size bands with fixed reference rates, see the 100 kW system cost guide and the commercial solar cost guide.

The CTUIL benchmark, explained

Effective 1 September 2026, grid-connectivity approvals use a benchmark of Rs 3.5 crore per MW for solar (Rs 6 crore/MW wind, Rs 0.80 crore/MWh BESS). This is a regulatory benchmark for financial-closure scrutiny, not a market price statement — quotes that sit far off benchmark levels get flagged in approval checks (SauRo Energy, Sep 2026).

Cost breakdown: where the money goes

A 2025 techno-economic study of a 1 MW Indian industrial plant split capex roughly as follows:

(Source: IJFMR techno-economic study, Aug 2025; component shares corroborated by Qbits Energy capex glossary, Jul 2026.) Apply these shares to your surveyed turnkey price to see where a rupee lands — and use them to compare quotes line by line. For module-level pricing, see our solar module price tracker and per-watt price guide.

1 MW solar plant income per month

Buyers searching for 1 MW economics usually frame it as monthly income. For a self-consuming industrial host, the plant's monthly "income" is the avoided grid purchase:

Seasonality is real — summer months generate above average, monsoon months below — so model the year, not the peak month. If you sell power instead of self-consuming (RESCO host, group captive, or third-party sale), monthly income is the PPA rate times delivered units, net of wheeling and surcharges; see our RESCO/OPEX model guide and third-party sale vs group captive comparison.

Rooftop vs ground-mount at 1 MW

• Ground-mount: needs 4-5 acres (up to ~6 with single-axis trackers); land development and fencing are the added scope items.
• Rooftop: needs about 80,000 sq ft (7,400-7,500 sqm) of shade-free industrial roof; structure and roof-condition works govern the survey. Region context in our UP industrial solar guide.

Area norms in detail are in our rooftop area per kW/MW guide.

How much power does 1 MW produce?

At a capacity utilisation factor of 18-20%, 1 MW generates 15.7-17.5 lakh units per year nationally; in the Delhi-NCR/UP belt, realistic yields are 14.2-15.2 lakh units per MW per year (1,420-1,520 kWh per kWp). City-wise yields are tabulated in our units generated per kW guide for North India.

Payback, IRR and running costs

• Plain savings case: against industrial HT tariffs of Rs 7.95-10.50/kWh across North India, a 1 MW plant saving 14-15 lakh units a year recovers its cost in roughly 5-7 years before tax benefits.
• With tax depreciation: 40% Year-1 accelerated depreciation plus GST input credit compresses payback to ~3-5 years for tax-taking companies (methodology in our accelerated depreciation guide, AD vs 115BAA analysis, and IRR calculation methodology).
• O&M: budget ~1-2% of capex per year — cleaning cycles, monitoring, preventive electrical checks, and an inverter replacement reserve in later years. Details in our solar O&M guide and panel cleaning schedule guide.

Frequently Asked Questions

What is the cost of a 1 MW solar plant in India in 2026?

1 MW-class projects are priced by site survey on Sun Wave's CAPEX reference ladder — Rs 23,000/kW at 100 kW and Rs 22,000/kW at 500 kW for qualifying rooftop projects, with 1 MW rooftop projects quoted progressively below the 500 kW rate. The CTUIL grid-approval benchmark from 1 September 2026 is Rs 3.5 crore per MW.

How much is a 1 MW solar plant's income per month?

In the Delhi-NCR/UP belt a 1 MW plant generates about 1.2 lakh units a month on average — worth roughly Rs 9.6-12 lakh per month in avoided grid purchases at tariffs of Rs 8-10 per unit. If you sell the power under a PPA instead, monthly income is the PPA rate times delivered units, net of wheeling and surcharges.

How many acres does a 1 MW solar plant need?

4-5 acres for a ground-mounted plant (up to ~6 acres with trackers). On a roof, 1 MW needs about 80,000 sq ft of usable industrial roofing.

How many units does 1 MW generate per year?

15.7-17.5 lakh units nationally at 18-20% CUF; 14.2-15.2 lakh units in the Delhi-NCR/UP belt. Multiply by your HT tariff to estimate annual savings.

Is any subsidy available for a 1 MW industrial solar plant?

No central capital subsidy applies to commercial and industrial solar — PM Surya Ghar is residential-only. The tax-side benefits (40% accelerated depreciation, 5% GST on solar devices, input credit) do the work instead; see our commercial solar subsidy reality check.

What is the per-unit cost of solar at 1 MW scale?

Levelised cost of energy at 1 MW scale typically works out to Rs 2.5-2.8/kWh over 25 years against industrial HT tariffs of Rs 7.95-10.50/kWh across North India — the spread that drives the 3-5 year post-tax paybacks.

Should I build 1 MW on my roof or split across sites?

If a single roof holds 80,000+ sq ft of usable area and your daytime load absorbs the generation, one 1 MW plant is simplest. If roofs are scattered, multiple 100-500 kW plants each land on the reference ladder at Rs 22,000-23,000/kW and keep self-consumption high — see our multi-site procurement strategy guide.

Sources

• Sun Wave Technologies reference pricing for qualifying CAPEX rooftop projects — Faridabad industrial solar page (Rs 23,000/kW at 100 kW, Rs 22,000/kW at 500 kW, ex-GST, verified September 2026)
• CTUIL advisory on benchmark project costs for grid connectivity, effective 1 September 2026 — SauRo Energy coverage
• IJFMR techno-economic study of a 1 MW industrial solar plant, August 2025 — DOI
• Qbits Energy capex glossary, July 2026 — component share corroboration
• Income Tax Act Section 32(1)(iia) — accelerated depreciation provisions