PM-KUSUM Solar EPC: What Building a Component A Plant Actually Involves

Most PM-KUSUM content explains the subsidy structure. Very little explains what actually happens between signing up and generating revenue, which is the part that determines whether a project reaches commissioning or stalls in year two.

This covers the build: what a Component A project requires, in what order, where the schedule genuinely breaks, and what to look for in a PM-KUSUM solar EPC company.

Which component are you actually building?

PM-KUSUM has three components, and they are different businesses. The confusion is worth clearing first, because the EPC scope varies enormously between them.

Component A is where most commercial developer interest sits: land is leased or owned, a plant is built near a substation with available capacity, and generation is sold to the discom. It is, in engineering terms, a ground mounted solar EPC project with a specific offtake structure attached. Component C2 follows similar logic at feeder level. Maharashtra's MSKVY 2.0 programme, which we cover in a separate scheme explainer, is the largest example of feeder solarisation in the country and now runs as a state scheme in its own right.

The rest of this article is about Component A.

The two constraints that decide everything

Before capital, before engineering, before anything: land and substation. Almost every failed PM-KUSUM project failed on one of these, and usually because they were assessed in the wrong order.

Substation capacity comes first

The plant must connect to a substation that has bay capacity available and headroom to absorb the generation. Capacity is finite, allocated, and changes as other projects are sanctioned. Confirming it is a matter of checking with the discom, not assuming.

The common and expensive mistake is aggregating land first because a parcel was available or family-owned, then discovering the nearest substation is full or too far. Land can sometimes be changed. A substation cannot.

Then land, and its paperwork

Land needs to be within workable distance of that substation, contiguous enough to lay out an array efficiently, and clean on title. Because these are typically projects for a solar power plant on agricultural land, the questions that surface are conversion status, tenancy and inheritance records, access and right of way for the evacuation line, and whether lease terms run at least as long as the PPA. A twenty-five-year offtake sitting on a fifteen-year lease is a financing problem waiting to happen.

The commercial spine: allocation and PPA

Capacity under Component A is allotted through state-level processes run by the discom or the state nodal agency, and the tariff is generally discovered competitively under a regulator-approved ceiling. The output is a long-term solar PPA with the discom.

The PPA is worth reading properly rather than treating as boilerplate, because three clauses shape the engineering that follows: how generation is measured and what happens during grid unavailability, whether curtailment is compensated, and what the commissioning deadline is with what consequences for missing it. A design optimised without reading these is optimised against the wrong constraint.

Timelines under the scheme have been revised more than once, and extensions have applied to specific project vintages rather than universally. Check the current position for your allocation rather than relying on a general figure.

Financing, where most projects actually stall

This is the honest answer to why PM-KUSUM capacity sanctioned and PM-KUSUM capacity commissioned are different numbers. Projects clear allocation, then sit at financial closure.

Lenders want evidence that the project will generate what the model claims and will be built on time. That means a credible generation estimate, clean land documentation, confirmed evacuation, and a contractor or delivery partner with a track record they recognise. Weakness in any one of those slows sanction, and slow sanction eats the commissioning window that the PPA does not extend.

Sequencing helps more than persuasion here. Getting the technical documentation right before approaching lenders is faster than approaching lenders and then producing documents on request. Subsidy structures, lender requirements and disbursement mechanics under PM-KUSUM warrant their own treatment, and SLNKO supports developers through the loan process as part of project delivery.

Evaluating a site? If you have a state, a land parcel and a nearest substation in mind, we can give you an indicative view on viability before you commit capital. Start your PM-KUSUM enquiry

Engineering, procurement and construction

Detailed engineering and the DPR

The detailed project report is what the lender reads and what the contractor prices against. It should carry a real resource assessment, a geotechnical picture of the actual site rather than a regional assumption, a validated single-line diagram, and a generation estimate that survives scrutiny. A weak DPR inflates cost under every delivery model, because a contractor pricing uncertainty prices it conservatively. Engaging a capable design and engineering partner before contracting is the cheapest risk reduction available on a project of this size.

Procurement and content rules

Module sourcing under PM-KUSUM is governed by ALMM listing and, in several state programmes, domestic content requirements (DCR). Where DCR applies it affects both price and lead time, and the specification needs fixing early. A module substitution late in the programme can disturb the layout, the structure design and the generation estimate simultaneously. Confirm the applicable rules for your state and allocation before ordering.

Construction and evacuation

The plant itself is well-understood work. The part that slips is outside the fence: the evacuation line, the bay at the substation, way-leave permissions, and utility scheduling for charging. These sit partly with the discom, which means they cannot be compressed by adding site labour. They can only be protected by starting them early.

Commissioning, then twenty-five years

Commissioning is a milestone, not an end. The asset then has to perform for the life of the PPA, which makes handover documentation, as-built drawings, test reports, spares definition, warranties, worth specifying in the contract rather than requesting afterwards. Decide how operations and maintenance will be handled before construction finishes, not after.

A realistic sequence

Durations vary widely by state and project, so treat this as ordering rather than a schedule.

Where PM-KUSUM projects go wrong

1. Land secured before substation capacity was confirmed. The single most common and most expensive error, because it is usually discovered after money has been committed.
2. Title and conversion issues surfacing after allocation. Agricultural parcels carry tenancy, inheritance and conversion complications that take months to resolve and cannot be compressed.
3. Financial closure treated as a later step. It depends on documentation produced during engineering, so preparing for it late costs the commissioning window.
4. Evacuation scope underestimated. The line, the bay and the way-leaves sit outside the plant but inside the deadline, and partly outside your control.
5. Generation assumptions taken from a template. Where the tariff is fixed, yield is the entire return. A regional average is not a site assessment.

Choosing how to deliver it: EPC or EPCM

PM-KUSUM EPC projects are delivered both ways, and the right structure depends on the project rather than on a general rule. A lump-sum EPC contract transfers cost, schedule and performance risk to one contractor for a fixed price, which suits a frozen scope and an owner without an internal technical team. An EPCM service arrangement keeps the vendor contracts with the owner and pays a fee for engineering, procurement and construction management, which gives line-item cost visibility and suits portfolios where scope is still maturing.

What tends to matter more than the label: how many separate procurement packages the project involves, whether the design is frozen, and whether the owner has someone empowered to make decisions during the build. Our comparison of solar EPC and EPCM models works through the trade-offs, including where each genuinely wins.

Developers building several PM-KUSUM sites often use a hybrid, engineering and procurement managed centrally, with construction packages let as fixed-price contracts once each site's design is settled.

Selecting a PM-KUSUM EPC partner

Five questions that separate a capable partner from a persuasive one, whichever contracting model you choose. Whether you need a contractor or a PM-KUSUM consultant for engineering-led delivery, ask these before you sign.

• Have you commissioned a PM-KUSUM plant in this state? State-level processes, discom practice and land rules vary. National experience is not the same as state experience.
• Who runs this project, and what else are they running? Capability sits with people, not brochures. Ask for the project manager by name.
• What does your evacuation scope include? The most common source of scope disputes on these projects. Get it written down.
• How do you handle module substitution? ALMM and DCR positions change. You need to know whether the contractor can substitute without your consent.
• What transfers at handover? Drawings, test reports, warranties, spares. Under-specified almost universally, and it determines how expensive year six is.

Planning a PM-KUSUM project?

SLNKO Energy has delivered over 1.6 GW of PM-KUSUM capacity across 11 states, including Odisha's first PM-KUSUM plant and Chhattisgarh's first Component A project, backed by more than 10 GW of solar delivered overall. We work as an engineering-led EPCM and PMC partner from land and substation assessment through engineering and DPR, procurement, construction and long-term O&M.

Have land and a substation in mind? Send us the state, approximate land available and nearest substation. We will come back with an indicative view on viability before you commit capital. Start your PM-KUSUM enquiry

Model the returns: SLNKO ROI Calculator | See delivered projects: View portfolio

If you are evaluating commercial or industrial offtake rather than a discom PPA, our C&I solar work is the closer fit.

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Frequently asked questions

Scheme parameters, subsidy structures and timelines under PM-KUSUM are set by MNRE and implemented through state nodal agencies, and vary by state and project vintage. Verify current requirements for your state before making commercial decisions. For scheme-level detail and to discuss a project, see our PM-KUSUM page. Figures current as of 4 September 2026.