Solar Industries — an explosives maker turning into a defence powerhouse

The Short Version

Solar Industries started as — and still is — one of the world’s largest makers of industrial explosives, the stuff that blasts rock in mines and for infrastructure. But the real story is its transformation into a defence company: making artillery shells, rockets (the army’s Pinaka), propellants, loitering “kamikaze” drones and more. In the year just ended (FY26) revenue grew 30% to ₹9,838 crore and profit 35% to ₹1,737 crore — both records — but the number that matters most is the order book: over ₹21,000 crore, of which ₹18,000 crore is defence (and notably, ₹11,000 crore of that is for export). That’s more than two years of revenue already booked. Defence revenue nearly doubled in FY26 and management guides the whole company to ₹14,000 crore next year. It’s a genuinely high-quality compounder — 31% return on equity, steady founder ownership — with two honest catches: the stock is priced for perfection (~99 times earnings), and the heavy investment phase has temporarily turned its cash flow negative.

What This Company Actually Does

Solar’s original business is industrial explosives — bulk and packaged explosives, detonators and the initiating systems used to blast rock in coal and metal mines, and for roads, tunnels and dams. It’s the dominant domestic player and increasingly a global one, with manufacturing across Africa, Southeast Asia and Turkey built over the past decade. This is a steady, GDP-plus business tied to mining and infrastructure activity, and it still funds everything.

The transformation is the defence arm. The same core competence — energetic materials (things that burn and explode in controlled ways) — extends naturally into ammunition, propellants, high-energy military explosives, warheads, and increasingly complete weapon systems: the army’s Pinaka rocket, 155mm artillery shells, smaller-calibre (23/30mm) shells, and loitering munitions (drones that hover then dive onto a target). Defence was ~18% of revenue in FY25 and jumped to 27% in FY26 (₹2,634 crore, up 94%); the industrial-explosives share has fallen from 91% (FY22) to ~72% as defence and exports grow. Roughly 39% of the company is now international.

The economics are excellent: operating margins have re-rated from ~19% to ~27% (defence and exports are higher-margin than domestic mining explosives), with a 31.5% return on equity and 36.8% return on capital — top-tier numbers. The founding Nuwal family owns a rock-steady 73% (no dilution, no pledging; the chairman was awarded a Padma Shri this year). The one thing you pay for all this: the stock trades at ~99× earnings and ~27× book value — among the richest valuations in the market.

The Long Game

Solar’s long game is the cleanest in this batch because it’s backed by an actual order book, not just ambition. The ₹21,000 crore-plus total order book (₹18,000 crore of it defence — split roughly ₹6,500–7,000 crore domestic and ₹11,000 crore international) gives multi-year revenue visibility that few companies have. Management guides the whole company to ₹14,000 crore of revenue in FY27 (up ~42%), with defence crossing ₹4,500 crore, and sees combined mining-plus-defence growth of 20%+ over the next three-to-five years at sustained ~27% margins.

Three engines drive it. The explosives base keeps compounding on global mining demand (commodity prices have lifted African, Southeast Asian and Turkish volumes). Exports crossed ₹3,800 crore and keep growing. And defence is the accelerant — a deep product pipeline moving from components toward complete systems: Pinaka rockets (a 7–10 year program, deliveries starting), 155mm shells (commercial production starting, against a genuine global shell shortage), smaller-calibre ammunition (army orders expected), loitering munitions, and longer-dated bets on larger drones (MALE/HALE class) and even humanoid robots for security.

The reason to give it real credit, rather than treating it as another defence promise: Solar is delivering the growth (revenue and profit are compounding at 30%+, not just the order book), the order book is genuinely large and increasingly export-backed, and the margins and returns are exceptional. The reason for discipline: the valuation already assumes years of flawless execution, and — like every defence supplier — its domestic deliveries depend on a government cadence that can slip (Pinaka, for instance, slid from Q3 to Q4 this year).

The Story So Far

The thread through FY26: the explosives base stayed strong, exports crossed milestones, and defence went from promising to the clear driver — each quarter a new record.

Q1–Q2 FY26 (reported September & November) — broad-based records

Steady, record quarters with margins holding in the high-20s. International (non-defence) crossed ₹1,000 crore in a quarter for the first time, on strong global mining demand. Management reaffirmed a ₹3,000 crore full-year defence guidance and described the past “turbulent years” in its overseas business as behind it.

Q3 FY26 (reported February) — the order book balloons

Solar’s “strongest quarter to date,” with defence revenue up 72% to ₹702 crore — and Pinaka not even in the numbers yet. The headline was the order book: ₹21,000 crore-plus, with ₹18,000 crore of defence (₹11,000 crore of it international). Management flagged that Pinaka deliveries and 155mm shell production would both start in Q4, and committed to 20%+ combined growth over three-to-five years at ~27% margins.

“If you combine mining and defence together, growing at 20%-plus is not at all difficult for Solar over the next 3–5 years.” — Manish Nuwal, MD (Q3)

Q4 / full-year FY26 (reported May) — defence breaks out

A record finish: Q4 revenue up 41%, with defence revenue crossing ₹1,000 crore in a single quarter (up 134%) — a third of the quarter’s sales. For the full year, defence nearly doubled to ₹2,634 crore (27% of revenue), international grew 32% to ~₹3,800 crore, and the company guided to ₹14,000 crore of revenue and ₹4,500 crore-plus of defence in FY27.

The pattern a long-term investor should appreciate: unlike many “defence story” stocks where the order book is a promise, Solar is converting — revenue and profit are compounding 30%+ alongside the growing backlog, margins are re-rating up, and the export order book de-risks the dependence on Indian government timing. The genuine watch-items are financial, not strategic: the heavy build-out has consequences (below).

Where Things Stand

Solar enters FY27 with the strongest setup in this batch: a ₹21,000 crore order book covering more than two years of revenue, defence breaking out (₹4,500 crore-plus guided), exports compounding, margins at ~27%, returns above 30%, a debt-light balance sheet and unwavering founder ownership. The transformation from cyclical explosives maker to defence-and-export platform is visibly working, not just promised.

The honest counterweights are two, and both are in the data. First, cash conversion has lagged: FY26 free cash flow turned negative (about −₹1,072 crore) as the company poured money into capacity (fixed assets up ₹1,353 crore, ~₹2,500 crore of capex guided) and its working-capital cycle stretched (working-capital days nearly doubled to 74, and operating cash flow fell to just 49% of operating profit from 142% the year before). This is the normal signature of a company investing hard ahead of a large order book — but it’s worth confirming cash generation catches up as deliveries ramp. Second, the valuation leaves no room for error: at ~99× earnings and ~27× book, the price assumes the ₹14,000 crore guidance and the order-book conversion arrive on schedule, with defence deliveries (Pinaka, 155mm) executing on a government timeline that already slipped once this year. For a patient investor, Solar is the rare case where the business quality and the order visibility genuinely justify optimism — the question is purely whether the price has run ahead of even this strong reality.

The Four Checks

1. Quality and moat. A genuinely good business with a strong, layered moat. The base layer is the industrial-explosives franchise: hazardous-materials licences that are hard to replicate, a dominant domestic position built since 1996 against the global number one and two, and a manufacturing footprint across Africa, Southeast Asia, Turkey and Kazakhstan that took a decade of greenfield qualification to assemble (overseas revenue plateaued near ₹800 crore for three years while plants qualified, then quadrupled to ~₹3,800 crore). The defence layer adds qualification cycles measured in years — Pinaka is a 7–10 year programme, the counter-drone system is one of few being built globally — plus energetics know-how that doesn’t transfer easily. What could erode it: explosives pricing is partly pass-through (escalation clauses recover only ~60% of raw-material spikes), domestic defence orders sit on government cadence, and a Kalyani-sized entrant is reportedly circling. Strong and durable, not unassailable.

2. Returns on incremental capital and runway. Exceptional, and improving. ROCE is 36.8% and ROE 31.5% per the snapshot, with operating margins structurally re-rated from ~19–20% (FY19–FY23) to 27–28% as the mix shifted toward defence and exports — meaning recent capital has gone in at better returns than the historical base, not worse. The runway is unusually visible: a ₹21,300 crore order book (₹18,000 crore defence, ₹11,000 crore of that export) is more than two years of FY26 revenue already contracted, management guides ₹14,000 crore for FY27, and the African/defence build-out keeps absorbing capital — ₹2,700 crore invested over the last two years, another ₹2,050 crore planned. High-20s-to-30s returns with a long, order-backed reinvestment runway is about as good as this check gets.

3. Capital allocation for the stage. Close to textbook. The company is reinvesting hard exactly when incremental returns are high: dividend payout has been deliberately walked down from ~25% (FY16) to 6% (FY26), fixed assets jumped ₹1,353 crore in one year, and there has been no dilution — equity capital unchanged, promoter stake frozen at 73.15% across every quarter shown, no pledging. Leverage stayed sensible (borrowings ₹1,524 crore against ₹6,259 crore of reserves). No buyback history is visible in the data, but with 30%+ internal returns, retaining cash is the right call, not a quibble. The genuine watch-item is execution of that reinvestment: FY26 free cash flow turned negative (about −₹1,072 crore) as working-capital days doubled to 74 — management calls the inventory build strategic and expects normalisation within two quarters, which is checkable. Rational allocation; cash conversion is the thing to verify.

4. Price. Demanding to the point of priced-for-perfection. As of the June 2026 snapshot the stock trades at ₹18,155 — a ₹1.64 lakh crore market cap, 97.8 times earnings, 26.2 times book value, with a 0.06% dividend yield, near its 52-week high. The business is delivering 30–35% growth and may keep doing so, but at ~98 times earnings even the guided FY27 numbers leave the stock at roughly 70 times forward profit; the price assumes the ₹14,000 crore guidance lands, defence deliveries hold a government timeline that already slipped once this year, and the multiple doesn’t compress. A superb compounding engine, but the market has paid itself most of the next several years of compounding in advance.

Sources

• Concall transcripts (4): Q1 FY26 (Sep 2025), Q2 FY26 (Nov 2025), Q3 FY26 (Feb 4, 2026), Q4 FY26 + full-year (May 15, 2026) — BSE filings, converted to markdown. These carried the order-book detail, defence breakout and FY27 guidance.
• Annual reports (3): FY23, FY24, FY25 sections — extracts were thin on MD&A/chairman’s narrative (flagged in the digests); the financial and segment arc leans on the screener tables and concalls.
• Screener.in snapshot: quarterly and annual tables, ratios, shareholding — fetched 2026-06-07 (logged-out session); source of the cash-flow and working-capital detail.
• Research files: vault/Sources/Earnings/Solar Industries India Ltd/ — raw transcripts, AR sections, snapshot, per-document digests (not published).