ASI Industries is fundamentally a quarrying company - it mines and processes Kotah stone, a natural stone from Rajasthan used for flooring and construction, from what it describes as the world’s largest stone quarry. Founded in 1945, the company spent decades as a diversified conglomerate before systematically selling off its engineered-stone, wind-power, trading, and overseas subsidiaries to become a pure-play natural-stone miner by FY24. The recurring approach is one of radical simplification: exit every non-core business, concentrate on the one asset nobody else can replicate, and only then look for the next venture - which, in FY26, meant starting to explore steel through a new subsidiary.
Business segments
Three engines at different stages - a natural-stone bedrock that is the entire operating business, a captive solar project under construction to feed it cheaper power, and a steel exploration bet that has yet to begin operations - each built with the cash flows of the one before.
1. Kotah stone: the quarry that is the company
A single 10-square-kilometre quarry in Rajasthan produces over 12 million square metres of stone every year, making it the company’s sole operating business and its entire reason for existing.
- Mined, processed, and sold as one - the company extracts stone from underground by digging, blasting, or cutting, then processes it and sells it as finished product; revenue is recognised when the goods are delivered and ownership passes to the buyer.
- The quarry is the moat - the Ramganjmandi site is described as the largest Kota stone quarry in the world, and the company is the only listed player in its field in India, operating in a domestic stone industry worth Rs. 25,000 crore with reserves of 4 trillion cubic metres.
- Housing and infrastructure drive demand - the stone goes into flooring, wall cladding, furniture, and monuments, with end-markets in residential construction, home renovation, and government infrastructure spending.
- Diesel is the swing cost - High-Speed Diesel is a significant input for quarrying machinery, so the company is exposed to commodity price risk on fuel, alongside royalty payments and mining expenses.
- Competition comes from tiles, not other quarries - the main threats are the unorganised sector, cost-effective vitrified tiles, and artificial stones, while high transportation costs squeeze the organised natural-stone segment.
2. Captive solar: cheaper power for the quarry
A 3.8 MW AC solar plant is being built by a partner in Rajasthan, and ASI has locked in the output for its own use while taking a minority stake in the project.
- Power bought, not generated in-house - ASI signed a Power Purchase Agreement with Sunsure Solarpark Fifty Two Private Limited, a special-purpose vehicle building a 6.33 MW AC solar project at Mundsar, Rajasthan, and contracted 3.8 MW AC of that capacity as a captive user.
- Equity stake secures captive status - to comply with captive-power rules under the Electricity Act, ASI subscribed to 15.60% of the project company’s equity for Rs. 182.40 lakhs, with the first tranche of Rs. 18.23 lakhs paid in March 2026.
- Feeds the quarry’s cost base - the solar plant is intended to supply power to the mining and processing operations at Ramganjmandi, where a separate 60 KW rooftop solar unit was also ordered for installation by May 2024.
3. ASI Steel and Energy: a bet beyond stone
A newly incorporated subsidiary, three-quarters owned by ASI, has been set up to explore building a TMT steel plant - but it has not yet started any business activity.
- Born from a ceiling, not a crisis - the board’s stated rationale is that expansion opportunities in the Kotah stone business are limited, while infrastructure growth is driving demand for iron and steel products.
- A shell with a mandate - ASI Steel and Energy Limited was incorporated on June 26, 2026, in Mumbai, with ASI Industries holding 75% and promoters holding the remaining 25%, for an initial cash investment of up to Rs. 7,50,000.
- No operations yet - as of the incorporation announcement, the subsidiary had not commenced business, making this a pure exploration-stage venture with no revenue, no plant, and no timeline disclosed.
Group structure and partners
The company spent years dismantling a conglomerate structure - selling subsidiaries in engineered stone, wind power, and the Gulf - so that by FY24 it stood alone, with no subsidiaries, joint ventures, or associates, before cautiously adding a steel subsidiary and a solar minority stake in FY26.
- Wind power was discarded - two wind plants totalling 3.625 MW in Karnataka and Maharashtra were sold in FY23 to unrelated buyers for a combined Rs. 3.02 crore, after changing wind patterns and rising maintenance costs made them unviable.
- A legacy amalgamation reshaped the shareholding - Deejay Mining and Exports Private Limited was merged into ASI in 2020, and post allotment/cancellation of equity shares, the promoter shareholding in the Company now stands at 72.51%.
- Small stock-exchange investments sit on the books - the company holds minor equity stakes in NALCO, SAIL, and Spicejet, acquired through the stock exchange between July 2024 and January 2025 for a combined outlay of roughly Rs. 4.27 crore.