Premier Energies commissions 7 GW Naidupeta cell line, now India's largest solar cell maker at 10.6 GW
The ₹3,293 crore N-type TOPCon plant starts trial runs, lifting cell capacity from an implied 3.6 GW. The stock closed −0.1% at ₹900.70, 20.6% below its July high.
₹900.70 Sep 21 · −0.1% on the day
LARGE-CAP by market cap ≈ ₹40,887 Cr
−20.6%
adjusted high ₹1,134 (Jul 10)
₹3,293 Cr
≈8% of market cap
10.6 GW
after the 7 GW addition
₹471.9 Cr
consolidated · OPM 29.0%
Before the market opened on Monday, September 21, Premier Energies filed a press release announcing that its 7 GW N-type TOPCon G12R solar cell facility at Naidupeta, Andhra Pradesh has been commissioned and has started trial runs. The filing states the plant takes the company's total solar cell capacity to 10.6 GW — which implies roughly 3.6 GW of cell capacity before this addition, so the single facility nearly triples the cell line — and describes Premier Energies as India's largest cell manufacturer, with Naidupeta as India's largest solar cell manufacturing plant. The market's first response was muted: the stock closed at ₹900.70, down about 0.1% from Friday's close of ₹902.00.
What was commissioned, and what it cost
7 GW N-type TOPCon cell facility commissioned at Naidupeta; total cell capacity 10.6 GW
Premier Energies commissioned its 7 GW N-type TOPCon G12R solar cell manufacturing facility at Naidupeta, Andhra Pradesh and started trial runs. The filing states the plant is spread across 101 acres, was developed at a capital expenditure of ₹3,293 crore, and was delivered on time and within budget. It is designed to produce approximately 88,000 solar cells per hour, with fully automated transport, packing and packaging systems, and is targeting average solar cell efficiency of approximately 25.8% following stabilisation and ramp-up. The design allows potential upgrades to next-generation TOPCon+ technologies, including poly-finger metallisation and advanced edge-isolation processes, and includes a Zero Liquid Discharge water-recycling system.
Read:At ≈8% of the company's ₹40,887 crore market capitalisation, this is a large single-asset addition, and it converts a major piece of the ₹12,500 crore capex programme from construction into a plant in trial runs. The commercial question the filing leaves open is ramp-up: output, utilisation and the ~25.8% efficiency target all sit on the other side of stabilisation, which future disclosures will have to evidence.
BSE filing — press release, Sep 21, 2026Commissioning India's largest solar cell manufacturing facility on time and within budget is an important execution milestone for Premier Energies. We remain positive on the outlook for orders, pricing and demand for high-efficiency solar products. The timing of this 7 GW capacity addition is therefore significant: as the line stabilises and ramps up, it gives us the scale to serve that demand with greater supply reliability and operating efficiency.
— Chiranjeev Saluja, Managing Director, Premier Energies Limited
The press release places Naidupeta inside a larger programme: the company states it is undertaking a ₹12,500 crore capital expenditure programme over three years to more than double its solar manufacturing capacity, expand backward integration into ingots and wafers, and diversify into inverters, transformers and battery energy storage systems. Naidupeta is the cell-capacity leg of that plan. The battery leg surfaced eleven days earlier.
Binding term sheet for a 12 GWh battery storage manufacturing joint venture with RCT India
Premier Battery Technologies Private Limited, a wholly-owned subsidiary, entered into a binding term sheet on September 10, 2026 with RCT Energy India Private Limited, part of RCT Group, Germany, to establish Premier Energies Storage Solutions Private Limited as a joint venture for a 12 GWh battery energy storage system (BESS) manufacturing facility. The filing states the first phase, a 6 GWh plant, is expected to be set up in FY 27-28 at Seetharampur, Telangana.
Read:This is the diversification leg of the same ₹12,500 crore programme the commissioning release describes. It is at term-sheet stage — the Shareholders' Agreement and RCT's phased 15% equity subscription in the joint venture are still to be finalised, and the first phase is dated FY 27-28 — so it is a pipeline item rather than capacity, in contrast to Naidupeta, which is now a commissioned plant in trial runs.
BSE filing — execution of binding term sheet, Sep 10, 2026Two smaller structural moves sit in the same window: on September 1 the board approved incorporating a wholly-owned Singapore subsidiary, PE Horizon Pte. Ltd., for trading, management consulting and ancillary clean-energy activities, with an overseas direct investment of up to SGD 1,00,000, alongside what the filing titles an intra-group shareholding reorganization; and on September 17 the company reported that a dormant Bangladesh step-down subsidiary, IBD Solar Powertech, received its winding-up certificate — housekeeping rather than strategy. The commissioning release itself landed on the morning of the company's 31st Annual General Meeting, scheduled for 11:30 A.M. the same day.
A commissioning announced into a ~2.5-month drawdown
The announcement arrived into a weak tape. From the adjusted 52-week high of ₹1,134 on July 10, the stock has fallen 20.6% to ₹900.70 — including a slide from ₹945 to ₹880 over three sessions in mid-September on elevated volume, before a modest recovery on September 18. Against that, Monday's −0.1% close reads as a non-reaction: the news that a plant this size was coming was already public in outline — the company's own materials describe the ₹12,500 crore programme — and the filing converts a known project into a commissioned line rather than revealing a new one. The stock remains 36.5% above its 52-week adjusted low of ₹660, set on February 1.
The P&L the new capacity plugs into
The commissioned capacity lands on a P&L that has been compounding. Q1 FY27 consolidated revenue was ₹2,462.6 crore against ₹1,820.7 crore in Q1 FY26 — up 35.3% — and net profit rose 53.3% to ₹471.9 crore. The company's own results press release states total revenue up 34.1% year-on-year to ₹25,076 million, i.e. ₹2,507.6 crore (that figure is total income, which includes ₹45.0 crore of other income in the quarter). Operating margin has held near 30% in every consolidated quarter available here, easing to 29.0% in Q1 FY27.
Q3 FY26 consolidated figures are not in the dataset used for this report.
One ownership data point belongs in the picture. Exchange shareholding data shows promoter holding at 58.81% (26.55 crore shares) as of June 30, 2026, down from 64.18% (28.96 crore shares) as of March 31, 2026, while over the same quarter FII holdings rose from 2.59 crore to 3.60 crore shares and DII holdings from 6.20 crore to 8.16 crore shares. The filings reviewed for this report do not state the mechanics of that change, so no conclusion about the reason is drawn here — but a 5.4-percentage-point promoter reduction in the quarter is part of the backdrop against which the stock has traded down from its July high.
The filings that would move this story
Naidupeta ramp-up
The plant is in trial runs; the filing targets approximately 25.8% average cell efficiency following stabilisation and ramp-up. Whether output, utilisation or efficiency appears in coming quarterly disclosures is the first test of the commissioning.
Backward integration
The company states the ₹12,500 crore programme extends into ingots and wafers. Filings that turn that from a programme description into specific plants and dates would extend the Naidupeta story upstream.
BESS JV formation
The September 10 term sheet is binding; the parties targeted the Shareholders' Agreement within 30 days, and RCT's phased 15% equity subscription is still pending. The first 6 GWh phase at Seetharampur, Telangana is expected in FY 27-28. The Shareholders' Agreement and definitive-agreement filings are the next markers.
AGM outcomes
The 31st AGM was scheduled for September 21 — the day of the commissioning release — with the re-appointments of Managing Director Chiranjeev Singh Saluja and Chairman & Wholetime Director Surenderpal Singh Saluja subject to member approval.
Next shareholding pattern
The September-quarter pattern will show whether the promoter holding stabilised at 58.81% or moved again, and whether institutional accumulation continued.
The September 21 filing marks a clean execution data point: a ₹3,293 crore, 101-acre plant that the company says was delivered on time and within budget, taking cell capacity from an implied 3.6 GW to 10.6 GW and — by the company's description — making Premier Energies India's largest cell manufacturer. On a P&L growing revenue at roughly 35% year-on-year with operating margins near 30%, the addition gives the existing growth rate considerably more capacity to run on.
What the filing does not settle is monetisation. Trial runs are not shipments, the ~25.8% efficiency figure is a post-ramp target, and management's confidence on orders, pricing and demand is an outlook statement rather than an order book. With the stock 20.6% below its July high and a 5.4-point promoter stake reduction in the June quarter left unexplained by the filings reviewed here, the data suggests the market is waiting for ramp-up evidence rather than paying for the capacity in advance. The next two quarters of disclosures should show which reading is right.
Informational and educational content only. Not investment advice.