1 MW solar power plant cost in India: what goes into the price and how to plan one

A 1 MW solar plant is a serious project. It is the scale where a landowner starts thinking about solar as an income source, a factory looks at covering a large share of its power, or a group of investors considers a ground-mounted plant. It is also a scale where vague answers are dangerous: a rough figure picked up on the internet can be off by a wide margin once land, approvals and grid connection are counted.

This guide explains what goes into the cost of a 1 MW solar power plant in India, how much such a plant can generate, the decisions that move the price, and how to plan a project in Telangana or Andhra Pradesh. We do not put a single rupee figure on it, because an honest number depends on your site and your route to selling or using the power. We explain what to ask for instead.

What "1 MW" means

A 1 MW (megawatt) plant has a total panel capacity of 1,000 kW (kilowatts). In comparison, a typical home system is 3 to 5 kW, so 1 MW is roughly the size of two to three hundred home systems combined.

1 MW plants come in two main forms:

• Ground-mounted: panels on structures on open land. This is the most common form for 1 MW and above.
• Rooftop: on large industrial or warehouse roofs, usually spread across several buildings. Few single roofs are large enough for a full megawatt.

How much does a 1 MW plant generate?

Generation decides the economics. From Origian's own installed base in the Anantapur (APSPDCL) region, each kW of solar produces roughly 1,550 to 1,600 units (kWh) a year. Scaled up as a planning estimate:

• 1 MW ≈ 1.55 to 1.6 million units (kWh) a year
• roughly 4,200 to 4,400 units a day on average across the year

This scaling is an estimate from rooftop data. A ground-mounted plant's actual output depends on its design (tilt, row spacing, whether it uses trackers or bifacial panels), local irradiance, soiling and availability. A proper project starts with a site-specific yield study, not a rule of thumb.

What goes into the cost of a 1 MW plant

The total cost is the sum of several blocks. Understanding them helps you compare proposals and spot gaps.

1. Land

For a ground-mounted plant, land is often the biggest variable. Our farm land to solar plant calculator uses a planning assumption of about 4 to 5 acres per MW, depending on layout and row spacing. Land can be:

• owned, in which case its value is your contribution and opportunity cost;
• leased, with annual lease payments over the project's life;
• bought, which adds a large upfront cost.

Land suitability matters as much as area: flat or gently sloping ground, no flooding, good access roads, and, critically, reasonable distance to a substation for grid connection.

2. Solar modules

Panels are a large share of the equipment cost. Choices include mono PERC or TOPCon cells, and monofacial or bifacial panels. Bifacial panels on ground-mounted plants can produce more by collecting reflected light from the ground. Our guide to types of solar panels explains the options.

3. Inverters

A 1 MW plant usually uses several string inverters or one or more central inverters. Multiple string inverters add redundancy: if one fails, the rest keep producing. See our inverter types guide.

4. Mounting structures

Ground-mounted structures need to be engineered for the soil, the wind loads and the chosen tilt. Fixed-tilt structures are simpler and cheaper; single-axis trackers follow the sun and generate more, at higher cost and maintenance.

5. Electrical balance of system

This includes DC and AC cabling, combiner boxes, switchgear, transformers, protection, earthing, lightning protection and monitoring (SCADA). It is easy to underestimate and essential to get right.

6. Grid connection and evacuation

To sell or wheel power, the plant must connect to the grid, often through a dedicated line to the nearest suitable substation. The distance to the substation and the connection voltage can make a big difference to cost and timeline. This is one of the first things to check on any site.

7. Civil works

Site levelling, fencing, internal roads, drainage, foundations for structures, a control room, inverter and transformer platforms, and security.

8. Approvals, studies and soft costs

Feasibility and yield studies, soil testing, design and engineering, statutory approvals, connectivity applications, legal and financing costs.

9. Operation and maintenance

Over the plant's life: module cleaning, inspection, inverter servicing, vegetation control, security and monitoring. This is an ongoing annual cost, not a one-time one.

The decisions that move the price most

When two 1 MW proposals differ widely, the reasons usually lie here:

• Land: owned, leased or bought.
• Distance to the substation and connection voltage.
• Panel type: monofacial vs bifacial, PERC vs TOPCon, and the manufacturer.
• Structure: fixed tilt vs trackers.
• What is included: fencing, roads, control room, SCADA, transformer, evacuation line, approvals and insurance.
• O&M: whether the first years of maintenance are included.

Ask every bidder for a line-item breakdown covering these blocks. A suspiciously low total often means grid connection, civil works or approvals have been left out.

Business models: what happens to the power?

How the plant earns money changes everything about the project. Broadly:

• Captive use: a business consumes the power at its own premises (rooftop or nearby) to reduce its electricity bill.
• Open access or wheeling: power generated at one location is transmitted through the grid to the consumer's premises elsewhere, subject to state regulations, charges and approvals.
• Sale to a DISCOM or another buyer: under a power purchase agreement, where available.

Each route has its own rules, charges and approval process in Telangana and Andhra Pradesh, and these change over time. Before committing to land or equipment, get clear, current advice on the regulatory route for your project.

Farmers and landowners

Landowners often ask whether solar on their land is a good use of it. A few things to consider:

• Income stability vs farming: solar provides predictable generation, but the economics depend entirely on who buys the power and on what terms.
• Land lease vs own development: leasing land to a developer gives steady income with less risk; developing your own plant gives higher potential returns with much higher capital and risk.
• Scheme support: schemes for agricultural solar exist at national and state level, but their availability changes. For example, PM-KUSUM, the scheme for solar pumps and agricultural solar, is not currently open in either Telangana or Andhra Pradesh. Always check the current status before planning around a scheme.

Our farm land to solar plant calculator gives a first estimate of what your land could hold.

Rooftop megawatt projects for businesses

For factories, warehouses, hospitals and campuses, a large rooftop system can cover a significant share of daytime consumption at commercial tariffs. Our calculators assume ₹10 per unit for commercial consumers, which is where solar savings are strongest. Businesses may also be able to claim depreciation on the system; see our solar depreciation calculator and our guide to commercial rooftop solar in Telangana and Andhra Pradesh.

Origian's own commercial work includes hospital installations of 17 kW to 38 kW and a 55 kW commercial installation. For larger projects, the same engineering principles apply at greater scale.

Timeline for a 1 MW project

A ground-mounted 1 MW plant takes considerably longer than a rooftop home system. The main stages:

1. Feasibility: site assessment, yield study, grid connection check and business model.
2. Approvals and connectivity: the slowest and least predictable stage in many projects.
3. Engineering and procurement: design, structure engineering, ordering modules and inverters.
4. Construction: civil works, structures, module installation, electrical works.
5. Testing and commissioning: inspections, grid synchronisation, handover.

Plan for the approvals and grid-connection stage to set the overall pace.

Questions to ask any EPC for a 1 MW proposal

1. What yield do you estimate, and what assumptions sit behind it?
2. What exactly is included: land preparation, fencing, roads, control room, transformer, evacuation line, SCADA, approvals?
3. Which modules and inverters, by make and model, and with what warranties?
4. What structure: fixed or tracker, and engineered for what wind load?
5. How far is the substation, and who handles connectivity?
6. What O&M is included, and for how long?
7. What is the project timeline, stage by stage?
8. Can I see similar projects you have completed?

Our article on what a solar EPC company does explains the EPC model and what you should expect from one.

Why we do not quote a single 1 MW figure

You will see "1 MW solar plant cost" figures quoted online as a single number. In practice, two genuine 1 MW projects can cost very different amounts depending on land, grid connection, equipment and scope. A single figure without that context tends to mislead, either making a good project look expensive or hiding costs that appear later.

What we do instead is assess your site, your intended use of the power and the connection route, then give a line-item proposal. For smaller commercial systems, our published per-kW prices give a sense of scale; for example, a 10 kW system costs ₹6,10,000 to ₹6,40,000 before any subsidy. See solar system prices.

How Origian approaches larger projects

Origian Power is a solar Engineering, Procurement and Construction company working across Telangana and Andhra Pradesh. Since 2020 we have completed more than 300 installations and commissioned over 2,000 kW. For larger commercial projects, we start with a site visit and a clear conversation about how you will use or sell the power. Then we design, source and install with the same build standards we use everywhere:

• galvanised structures engineered for wind;
• dedicated lightning-arrestor earthing;
• surge protection on both DC and AC sides;
• quality cabling and connectors.

If you are planning a large rooftop or ground-mounted project, contact us to discuss your site.

Rooftop megawatt vs ground-mounted megawatt

The same 1 MW can be built in very different ways, with different cost structures:

Ground-mounted

• needs land (about 4 to 5 acres per MW as a planning figure), fencing, roads and site preparation;
• allows optimal tilt and orientation, and the option of trackers;
• often needs a dedicated connection to the grid;
• suits landowners, investors and projects selling or wheeling power.

Rooftop (spread across buildings)

• uses existing roofs, so no land cost;
• tilt and orientation follow the roofs, which may not be ideal;
• power is usually consumed on site, so savings are at the consumer's own tariff;
• needs structural checks on every roof, and careful electrical integration with existing panels;
• suits factories, warehouses, campuses and hospitals.

For businesses that consume their own power, a rooftop megawatt spread across buildings is often simpler and faster than a ground-mounted plant, because it avoids land and long evacuation lines.

How to judge a yield estimate

The single most important number in a 1 MW proposal is the expected annual yield. Ask how it was calculated:

• Irradiance data: what weather data was used for the site?
• System losses: what allowance was made for temperature, soiling, cabling, inverter and mismatch losses?
• Degradation: how is panel ageing included over the project's life?
• Availability: what downtime is assumed for faults and maintenance?

An estimate that looks much higher than our regional benchmark of roughly 1,550 to 1,600 units per kW per year deserves close questioning. An estimate based on proper site data, with clearly stated losses, deserves more trust than a round number.

Operation and maintenance at megawatt scale

A 1 MW plant has thousands of panels, many connectors and several inverters. Good O&M includes:

• regular module cleaning, with a schedule based on the site's dust levels;
• thermal inspections to find hot spots and failing connectors;
• inverter servicing and monitoring of every string;
• vegetation control on ground-mounted sites;
• security, because panels and cables are valuable;
• performance reporting, comparing actual generation against expected.

Budget for O&M from the start. A plant that is not maintained can lose a meaningful share of its output.

A note on subsidies for larger projects

The PM Surya Ghar subsidy is for residential rooftop systems, so it does not apply to megawatt-scale commercial or ground-mounted projects. It is also paid only for systems installed by a DISCOM-registered vendor, and Origian Power is not a registered PM Surya Ghar vendor. For larger projects, the economics rest on the value of the power generated and, for businesses, tax treatment such as depreciation.

Grid connection: the step that can decide feasibility

For a megawatt-scale plant, the grid connection is often the deciding factor, not the panels. Questions that need clear answers early:

• Which substation will the plant connect to, and how far away is it? Long evacuation lines add cost and approval complexity.
• Does the substation have capacity to accept the plant's output?
• What voltage level will the connection be at, and what transformer and switchgear does that require?
• Who builds and owns the line from the plant to the substation?
• What metering and protection does the utility require at the interconnection point?

A site with cheap land but a difficult grid connection can end up more expensive than a site with costlier land next to a substation. Always study the grid connection before committing to land.

Land: what to check before you commit

A ground-mounted plant needs land that is suitable for decades, not just available now. Our planning assumption is roughly 4 to 5 acres per MW, depending on the layout and the technology used. Check:

• clear title and the right to use the land for the project's life;
• that the land is not prone to flooding or waterlogging;
• the soil, for structure foundations;
• shading from hills, trees or buildings;
• road access for construction and maintenance vehicles;
• distance to the grid connection point.

For farmers and landowners, PM-KUSUM is often mentioned. At present, it is not open in Telangana or Andhra Pradesh, so do not plan a project around it without checking the current position with the state nodal agency.

Frequently asked questions

What is the cost of a 1 MW solar power plant in India? The cost of a 1 MW solar power plant in India depends heavily on land, grid connection distance, module and inverter choice, structures and approvals, so a credible figure needs a site study. Be wary of a single headline number; ask for a breakdown covering modules, inverters, structures, evacuation, civil works and O&M.

How much land is required for a 1 MW solar plant? A ground-mounted 1 MW solar plant typically needs about 4 to 5 acres, depending on layout, panel type and row spacing. The land should have clear title, good drainage, no shading, road access and a reasonable distance to the grid connection point, which often decides whether the project is feasible.

How many units does a 1 MW solar plant generate per year? Using Origian's regional figure of about 1,550 to 1,600 units per kW per year, a 1 MW solar plant would generate roughly 15.5 to 16 lakh units a year. Actual yield depends on site irradiance, design, losses, downtime and maintenance, so ask for a site-specific yield study before investing.

What is the biggest cost in a 1 MW solar plant? Solar modules are usually the largest single cost in a 1 MW solar plant, followed by inverters, mounting structures and the electrical balance of system. The grid connection can become the deciding cost if the substation is far away. Land is a separate cost unless you already own suitable land.

Is PM-KUSUM available for solar plants in Telangana or Andhra Pradesh? Not at present. PM-KUSUM is not currently open in Telangana or Andhra Pradesh, so do not plan a farm solar plant around it without checking the current position with the state nodal agency. Other models, such as captive use, depend on state rules and the utility's approval for the connection.

How long does it take to build a 1 MW solar plant? Building a 1 MW solar plant takes several months end to end. Land, studies, approvals and the grid connection usually take longer than physical construction. Ask any EPC company for a written timeline that separates approvals, procurement, construction, testing and commissioning, with dependencies on the utility stated clearly.

What is the payback period of a 1 MW solar plant? Payback for a 1 MW solar plant depends on the project cost, how the power is used or sold, the applicable tariff and the financing. Captive use that replaces expensive commercial power usually pays back fastest. Any solar proposal should show its assumptions clearly, so you can check the numbers yourself.