What a 2 MW Solar Plant Costs and Needs: Roof, Connection, Approvals

A 2 MW rooftop solar plant indicatively costs ₹4.8–5.2 crore excluding GST at the rate our 1 MW page uses (₹24,000–26,000 per kW), and up to ₹6.4 crore at the top of our published band. It needs about two lakh square feet of shadow-free roof or seven to ten acres of land, and it is above the 500 kW net-metering limit, so the route needs deciding first.

What does a 2 MW plant cost?

We publish a band of ₹24,000–32,000 per kW for rooftop commercial and industrial solar, excluding GST, with the rate falling as the plant grows. Our size pages show how it falls: ₹28,000–32,000 per kW at 100 kW, about ₹27,000–30,000 at 250 kW, about ₹26,000 at 500 kW and ₹24,000–26,000 at 1 MW. We have no separate 2 MW page, so the figures below extend the 1 MW row and are indicative, not a quotation.

The band covers a rooftop plant with modules, inverters, structure, cabling, earthing, protection, metering and commissioning. It excludes roof strengthening, HT-side works such as a new bay or transformer, battery storage, statutory fees and, for ground-mount, the land. A ground-mounted 2 MW plant adds foundations, a boundary and the cable run to the HT yard, and we do not publish a separate ground-mount price. At this size the HT interface decides the number more than module choice, so ask any bidder to price it as a separate line.

How much roof or land does 2 MW need, and what does it generate?

Our size pages plan about 100 square feet of shadow-free roof per kW, so 2 MW needs about 2,00,000 square feet, which is several sheds of different heights, not one clean roof. Ground-mount needs about 3.5 to 5 acres per MW, so 7 to 10 acres of usable land after deducting roads, drains and set-backs. The solar plant area calculator converts capacity into area.

The size pages use about 120 units per kW per month for north India, higher in Rajasthan and Gujarat and about 105 to 115 in the East and North East. At 120 units, 2 MW generates about 2.4 lakh units a month and about 28.8 lakh units a year, before seasonal swing and winter fog. Put your own bill into the solar calculator to see how much of that your daytime load absorbs; the solar payback calculator then tests the payback.

Which route can carry 2 MW?

Not net metering. The Ministry of Power's amendment of 29 September 2021 raised the central net-metering limit from 10 kW to 500 kW, and states apply their own ceilings: Punjab's is 500 kWp on our 1 MW page, and the Chhattisgarh regulation sets a 500 kW maximum and caps the plant at the sanctioned load. A 2 MW plant therefore needs a different arrangement, and the arrangement decides which module rules apply.

Captive status is earned, not declared. Under Rule 3 of the Electricity Rules, 2005, as the Ministry of Power states it, users must collectively own at least 26 percent of the plant and consume at least 51 percent of its output a year. The Electricity (Amendment) Rules, 2026, notified on 14 March 2026, clarify ownership to include group companies, provide for state nodal agencies to verify captive status from 1 April 2026, and say that cross-subsidy and additional surcharge are not levied pending verification once the prescribed declaration is submitted. Open access for green energy was opened to consumers of 100 kW and above by the Green Energy Open Access Rules, 2022, with approval to be granted in 15 days or deemed granted. Our guide to captive solar versus open access compares the charges; our open-access solar page sets out the stack.

How does a 2 MW plant connect, and what inverter layout does it use?

A plant this size normally connects at the factory's HT bus. Supply voltage follows contract demand under each state's supply code; Punjab's code, for example, specifies 11 kV supply for large-supply consumers with contract demand up to 4,000 kVA and 33 or 66 kV above that, so a factory with a 2 MW daytime load is usually already an 11 kV consumer. The plant's AC output steps up through its own transformer to the HT panel, with a breaker, protection relays, CT and PT metering and, where the DISCOM asks, reverse-power protection. Our guides on 11 kV interconnection and transformer headroom cover this.

On inverters, our 1 MW page cites a fleet of 15 to 20 string inverters of the 60 kW class or central inverters; at 2 MW expect roughly double that count or central stations, and let roof orientation, MPPT granularity and O&M access decide. See string versus central inverters. A plant larger than the factory's daytime load exports, so size to the load first and add generation only where the route pays for it.

What is the approvals sequence, and how long does it take?

1. Choose the route against your load and the state's rules, as above.
2. Apply to the DISCOM for feasibility, or register under the open-access or captive procedure, and settle the transformer and bay question.
3. Freeze the single-line diagram and protection settings, and issue the design for approval.
4. Obtain the Electrical Inspector's approval where it applies. Under the CEA safety regulations of 2023, installations above a voltage notified by the state, and generating units above a capacity the state notifies, are inspected by the Electrical Inspector before commissioning; below that, they are self-certified. Check your state's notification; our CEIG approval guide covers the sequence.
5. Procure modules against the ALMM rule for your route, and fix the commissioning date contractually, since 31 December 2026 matters for cells.
6. Install, test, inspect, synchronise and record the commissioning date.

We do not publish a single timeline for 2 MW, because the DISCOM and inspector steps vary by state. Our 100 kW page puts site work at 3 to 5 weeks on a ready roof; a plant twenty times larger has far more roof to cover, and approvals often govern the end date. Ask for a programme that shows approval periods separately from site work.

How Secured Engineers helps

We design C&I solar in-house and file DISCOM and CEIG applications in-house, with MEPF and solar under one contract. We work from offices in Noida (Delhi NCR) and Ludhiana, with 535+ projects across 18+ states and 89.77% repeat clients. Our solar calculator and size pages give a first view; the route and HT scope are settled from your bills and single-line diagram.

Send a year of bills, the sanctioned load and a roof or land layout, and we will tell you which route fits 2 MW and what the HT works are likely to include. Message us on WhatsApp, call +91 70099 85817, or ask for a free proposal.