Ground-Mounted Solar Power Plants: A Practical Guide for Industries, Businesses and Investors in India

For many businesses, electricity is one of those expenses that keeps coming back every month. Whether you run a manufacturing unit, a commercial facility, or an industrial operation, power costs have a direct impact on day-to-day business expenses.

This is one reason more businesses are exploring solar power—not just as an environmental initiative, but as part of their long-term energy planning.

But what if your factory roof is not large enough for a solar installation? What if you have unused land near your industrial unit? Or what if you want to develop a solar power plant without being the actual consumer of all the electricity it generates?

This is where a ground-mounted solar power plant comes into the picture.

Unlike rooftop solar, a ground-mounted system is installed on land using specially designed mounting structures. Depending on the project, it can be developed for industrial captive consumption, electricity sales to a DISCOM, or supplying power to an eligible third-party consumer.

At GRE Renew Enertech Limited, we work with ground-mounted solar EPC and solar park requirements, helping customers explore projects based on their land, energy requirements, and commercial objectives.

In this guide, let’s understand how ground-mounted solar works, what businesses should consider before developing a project, and the different ways a solar power plant can be used.

What is a ground-mounted solar power plant?

A ground-mounted solar power plant is a solar electricity generation system installed directly on land rather than on the roof of a building.

Solar panels are fixed onto mounting structures, arranged in rows, and connected to electrical equipment that converts the generated electricity into usable power.

What makes ground-mounted solar particularly relevant for businesses is the flexibility it offers in choosing the location, plant layout, and project capacity, provided suitable land and electrical infrastructure are available.

For an industrial unit, the land could be near the factory or at another eligible location with an approved electricity supply arrangement. For a solar developer, the project may be designed around the availability of land, grid connectivity, and an identified power buyer.

In simple terms, ground-mounted solar is not limited to one type of customer or one way of using electricity. The right project structure depends on what you want to achieve.

Why are industries considering ground-mounted solar?

Every industrial unit has a different electricity consumption pattern. A manufacturing plant running multiple shifts may have very different requirements from a warehouse or a commercial building.

That is why solar planning should begin with the business’s actual energy requirements rather than simply deciding how many solar panels can fit on a piece of land.

For many industrial consumers, the main objective is to evaluate whether solar generation can reduce their dependence on conventional electricity procurement and improve long-term cost planning.

Here are a few reasons businesses explore ground-mounted solar.

1. Making use of available land

Industrial units sometimes have open land within their premises or access to a suitable nearby land parcel. If the land has appropriate conditions and grid connectivity can be arranged, it may provide an opportunity to install a solar power plant.

Unlike rooftop solar, a ground-mounted project does not depend on the load-bearing capacity or usable area of an existing factory roof.

However, not every open plot is suitable for solar development. Land title, terrain, soil conditions, drainage, access, land-use permissions, and grid connectivity all need to be evaluated.

2. Planning electricity expenses over the long term

Electricity tariffs, operating costs, and business energy requirements can change over time. Businesses therefore look at solar power as one part of a broader energy procurement strategy.

A captive solar power plant may help an eligible consumer offset part of its electricity requirement with solar generation. A third-party power purchase agreement may provide another route for an eligible consumer to procure solar electricity without owning the plant.

The actual financial benefit depends on the project cost, electricity tariff, solar generation, applicable charges, financing, and contractual terms. A feasibility study is necessary before estimating savings.

3. Supporting business sustainability goals

Industrial customers are increasingly interested in understanding the source of their electricity and measuring the environmental impact of their operations.

A solar power plant can contribute to renewable electricity generation. The actual environmental benefit should be calculated using verified generation data and an appropriate emissions factor, rather than relying on a general percentage reduction claim.

For businesses reporting sustainability performance, reliable generation and consumption records are important.

Ground-mounted solar vs rooftop solar: What is the difference?

Both systems generate electricity from sunlight, but the way they are planned and installed is different.

Neither system is automatically suitable for every business. A factory with a large, structurally suitable roof may be able to use rooftop solar, while a business with available land may consider a ground-mounted installation.

In some cases, businesses may evaluate both options as part of the same energy strategy.

The important thing is to compare the available area, expected generation, installation costs, electrical arrangements, and project requirements before deciding.

Three ways to develop a ground-mounted solar power plant

One of the first questions a business should answer is simple: Who will use the electricity generated by the plant?

The answer determines the project’s commercial structure. Ground-mounted solar projects are commonly explored under captive consumption, power sale to DISCOMs, and third-party power supply arrangements.

These models serve different purposes and have different technical, financial, and regulatory requirements.

1. Captive solar power plant for your own business

Suppose you operate a manufacturing unit and have access to suitable land for a solar installation.

Instead of using that land for another purpose, you may evaluate developing a captive solar power plant to meet part of your factory’s electricity demand.

The project generally involves:

• Understanding the factory’s electricity consumption and operating pattern.

• Evaluating the available land and proposed solar plant capacity.

• Assessing the electrical infrastructure and approved supply arrangement.

• Estimating the project cost, expected generation, and commercial feasibility.

For a factory owner, the objective is to determine whether the cost of generating or procuring solar electricity compares favourably with the existing electricity supply arrangement.

A captive plant may be located at the consumer’s premises or at another eligible site, depending on the applicable arrangement and approvals.

For businesses that do not want to invest directly in a solar power plant, a third-party PPA may also be worth evaluating.

2. Ground-mounted solar plant for sale to DISCOM

Another approach is to develop a solar power plant for supplying electricity to a distribution company (DISCOM).

In this model, the project is planned around an eligible power procurement arrangement, such as a tender or power purchase agreement.

• Is there an applicable procurement opportunity or power purchase arrangement?

• What are the requirements for project capacity, commissioning, and grid connectivity?

• What tariff, payment terms, and contractual conditions apply?

• What are the project development costs and expected operating expenses?

The answers will vary from one project to another.

Developing a solar plant does not automatically mean that a DISCOM will purchase its electricity. Procurement eligibility, contractual arrangements, connectivity, and required approvals must be established before the project is treated as a viable power sale opportunity.

For investors, this distinction is important. The project’s economics depend on the actual agreement and project assumptions, not simply on the amount of electricity the panels are expected to generate.

3. Third-party solar power plant for supplying electricity to industries

A third-party solar project involves a power producer supplying electricity to an eligible industrial or commercial consumer under a power purchase agreement and an applicable electricity supply arrangement.

This can be relevant to a factory that wants to procure solar electricity but does not want to develop and own the generation plant itself.

1. A solar developer evaluates the land, proposed capacity, grid connectivity, and potential power buyer.

2. The solar power plant is developed under the applicable project structure.

3. The eligible consumer and power producer enter into a power purchase agreement.

4. Electricity is supplied through the applicable grid and open-access framework, subject to approvals and charges.

For the industrial consumer, the commercial question is whether the agreed solar tariff, together with applicable additional charges, compares with the existing electricity procurement cost.

For the developer, the focus is on project cost, the power purchase agreement, payment terms, generation, and regulatory compliance.

A PPA should clearly establish the commercial responsibilities of the parties, including the agreed tariff, tenure, payment terms, and other applicable conditions.

These arrangements need to be assessed on a project-specific basis.