Tamil Nadu's PCB Export Surge — Government Incentives Behind 2026's Growth

Tamil Nadu's electronics manufacturing exports have grown faster than any other Indian state's over the last 18 months, and PCB assembly is leading the increase. The state's electronics export value crossed US$ 9.6 billion in FY2024–25, up from US$ 5.4 billion two years earlier — a 78% rise that, even accounting for global semiconductor demand, exceeds the growth in any comparable Indian electronics cluster.

Within that headline number, three sub-segments are doing the heavy lifting:

• Mobile-handset assembly and component-level supply — Foxconn, Pegatron, and Tata Electronics ramping Chennai and Sriperumbudur sites. Mobile contributes the largest share but a smaller growth rate (+34% YoY).
• Automotive electronics — battery management, infotainment, ADAS sub-assemblies. The smaller segment by absolute value but the fastest-growing (+91% YoY).
• Industrial and energy electronics — solar inverter electronics, EV charging modules, industrial automation. Still a small share (~12% of state electronics exports) but growing at +112% YoY off a small base.

The geographic concentration is striking. Three clusters — Sriperumbudur, Hosur, and the Madurai–Tirunelveli corridor — account for roughly 84% of the state's electronics export value. That concentration reflects where the policy incentives have been most effectively absorbed, which is the next section's subject.

"For the first time in two decades, we're seeing greenfield component-level investment in TN — not just board assembly but the components feeding into those boards. That's the marker of a real cluster forming, not just a low-cost assembly hub." — Pioneer Horizon Founder, on the regional context

Three overlapping policy frameworks have driven most of the activity. Understanding which one applies to which kind of investment matters because they don't compose simply — the central and state benefits combine, but with caps, and the eligibility windows are narrow.

Central PLI for Electronics — original scheme

Production-Linked Incentive for Large-Scale Electronics Manufacturing, launched 2020, focused on mobile phones with US$ 200+ ASP. Incentive: 4–6% of incremental sales above a base year, for 5 years. The scheme is closed to new applicants but the existing approvees are still drawing down. Largely responsible for the mobile-assembly cluster.

Central PLI 2.0 for Components

Launched in 2024 specifically to address the import-content problem in finished electronics — i.e. that mobile assembly creates jobs but the high-value parts still come from abroad. Targets PCB fabrication, display module assembly, lithium-ion cell manufacturing, and a handful of component categories. Incentive: 5–10% of incremental sales, with a higher rate for higher domestic value addition. Applications were strong from TN-based existing manufacturers; the first cohort of approvals was announced in late 2024.

TN State Electronics Hardware Manufacturing Policy 2020 (renewed 2023)

State-level capital subsidy of 10–20% on plant and machinery, training assistance, single-window clearance, and dedicated electronics manufacturing clusters with pre-built power, water, and effluent infrastructure. Critically: the state policy stacks on top of the central PLI, so a unit that qualifies for both can recover 25–30% of its capex in incentives across the first five years.

What this stacking looks like in practice

• A new PCB fabrication unit in the Sriperumbudur SIPCOT cluster qualified for state capital subsidy (15% on machinery, capped at INR 12 cr) plus central PLI 2.0 (7% on incremental sales for 5 years). Combined effective benefit: ~28% of total programme cost recovered.
• An automotive electronics assembly unit in Hosur qualified for state subsidy plus the labour-linked components of the Tamil Nadu policy plus partial inclusion in PLI 2.0 component allowlist. Combined effective benefit: ~22%.
• A captive assembly unit serving only one OEM — disqualified from PLI 2.0 (which requires arm's-length sales) but eligible for state subsidies. Effective benefit: ~12%.

The composition matters. A unit that doesn't sell to third parties picks up roughly half the available benefit. This has pushed several captive operations toward arm's-length structures purely to maximise PLI eligibility.

Policy alone doesn't make exports. The growth required physical infrastructure that's been quietly accreting for ten years and reached a critical mass in 2023–2024.

Power

Tamil Nadu added 4.2 GW of renewable generation in 2023–24 alone, with dedicated industrial feeders into the electronics clusters. Power tariffs for HT industrial consumers in approved cluster locations dropped 11% YoY — material for a PCB fab where electricity is 18–24% of cost of goods.

Logistics

• Chennai Port handles roughly 38% of India's electronics export tonnage. Dwell times have come down from 4.2 days to 2.6 days over the last 18 months on the back of e-customs and faster vessel turnaround.
• Bengaluru–Chennai expressway operational, dropping intra-cluster transit from 7 hours to 4 hours.
• Dedicated air-cargo electronics corridor at Chennai International Airport — important for high-value, time-sensitive shipments where sea freight is too slow.

Skilled workforce

The state's network of Industrial Training Institutes (ITIs) and engineering colleges produces roughly 2,400 electronics-trained graduates per year in the core clusters, with industry-linked curricula at several universities. Average wage cost for an SMT operator in the TN clusters has risen 8.5% YoY — faster than CPI but slower than the 14% YoY in Bengaluru. The clusters are still cost-competitive, but the gap is narrowing.

Component ecosystem

This is the change that matters most for medium-term exports. As recently as 2022, a PCB assembler in TN imported essentially every component except the bare board itself. By late 2024, a typical mobile-tier assembler could source roughly 18% of BOM value locally, with passives, connectors, certain power-management ICs, and increasingly LCDs/OLEDs all available within India. The PLI 2.0 component scheme is explicitly targeted at moving that number to 35% by 2027. Whether it gets there is the next 24 months' question.

Effluent and environmental

Electronics manufacturing has a real water-and-effluent footprint, and TN's clusters have invested heavily in zero-liquid-discharge facilities and dedicated industrial water supply. This isn't trivial for export-orientated production where European buyers in particular increasingly require environmental compliance certifications.

The export surge is real but it doesn't translate uniformly across customer profiles. Three buyer types are seeing very different outcomes from the same growth.

OEM with high volumes and standard product

The mobile-tier OEMs source most economically from TN. Lead times are tighter, IP protection is well-established, and cost differentials versus Vietnam or Indonesia have narrowed to 4–8% on assembled product (still favourable to TN when you account for design-engineering proximity for Indian-market product). Most large-volume programmes that would have gone to Southeast Asia three years ago now compete openly.

Industrial / automotive customer with mid-volume, complex builds

The strongest fit for the current TN cluster. The technical depth of the assembly base has improved dramatically — Class 3 capability is now widespread, multiple suppliers offer AEC-Q-aligned processes, and the design-engineering hand-off is shorter when customer and supplier are in similar time zones. This is the segment where Pioneer Horizon has seen the most growth in customer engagements.

Low-volume, high-mix prototype customer

Less of a direct beneficiary. The TN clusters are scaling for medium and large volumes; the prototype-and-NPI ecosystem still draws talent into a smaller number of specialised firms. We expect this segment to develop over the next two to three years as the cluster matures and second-tier suppliers emerge.

Practical buyer-side advice

• Don't assume "TN" means "Sriperumbudur." Hosur (automotive), Madurai (Class 3 mixed), Coimbatore (industrial controls), and Tirunelveli (energy electronics) each have different strengths.
• Verify PLI eligibility — a supplier in a non-PLI category may quote 3–5% higher than one in a PLI category for an equivalent build, before any negotiation.
• Audit IP and tooling separation if you're sourcing from a contract manufacturer that also serves your direct competitor. The clusters are concentrated enough that overlap is common.
• Account for the talent-cost trajectory in any 3+ year programme. Wages are still rising faster than CPI; lock-in escalation clauses where appropriate.

For buyers actively evaluating Indian suppliers, see our case study on a 5,000-unit automotive ramp for one concrete example of what the cluster can deliver under pressure. The pattern there is replicable.

The growth trajectory is genuine, but the gap between "actual results in 2025" and "headline projections for 2028" is wide. A grounded view of the next three years separates the durable trends from the cyclical ones.

What we believe will hold

• Component-level localisation — PLI 2.0 will drive a measurable increase in domestic BOM content. Whether it hits the official 35% target by 2027 is open, but a meaningful jump from 18% to 25–30% is very likely on the strength of approved investment already underway.
• Automotive electronics share growth — the global automotive supply chain is actively diversifying away from concentration risk, and TN's automotive-OEM presence (Hyundai, Renault-Nissan, Ford ex-Madras, plus the Tata, Mahindra, and Ashok Leyland clusters) provides demand-side anchoring that mobile alone never had.
• Quality differentiation — the suppliers who invested in Class 3 capability ahead of demand are taking share. Suppliers running on price alone are seeing margin compression.

What we're less sure about

• Semiconductor fabrication onshore — the announced fabs (Tata in Dholera, Micron in Gujarat) are not in TN and will take 3–5 years to operate at meaningful capacity. PCB assembly's import dependency on advanced ICs will persist into the late 2020s regardless of TN's policy stack.
• Cost-competitiveness with Vietnam at scale — for mobile-tier volumes, the gap is closing but Vietnam still leads on per-unit labour cost. Whether India's policy advantage exceeds the labour disadvantage at 100M-unit volumes is genuinely unclear.
• The next round of incentives — PLI is finite. The 2027–28 transition off PLI is the cliff that the cluster needs to plan for now. Without a successor instrument, unit economics shift meaningfully.

What we think customers should do

If you're already sourcing from TN, the next three years are favourable on capacity, capability, and supply continuity. If you're evaluating TN as a sourcing geography, the window to qualify a supplier and start commercial production before the 2027–28 incentive transition is roughly 12–18 months. After that, the new entrants will have less incentive headroom and will quote accordingly.

For more on how Indian manufacturing capacity is being built out in real terms, see our recent press feature on regional SMT investment. For a programme-level conversation about your specific sourcing strategy, contact our team.