Chennai's Raana Semiconductors Is Building the Machine Before the Fab
Raana Semiconductors will launch a commercial 12-inch CZ single-crystal machine within a year, aimed first at solar module makers, with a 40,000 sq ft plant coming up in Hosur.
India has spent three years talking about fabs. A Chennai company has spent them building the machine that comes before the fab.
The Hindu BusinessLine reported on 10 September that Raana Semiconductors, a Chennai deep tech startup, will launch its first commercial-grade 12-inch CZ single-crystal machine in the next ten to twelve months. Founder and CEO Rajasekar Elavarasan told the paper the first range is built for solar module manufacturers.
What a CZ machine does
The Czochralski method turns pure silicon into a single-crystal ingot, which then gets sliced into wafers that become chips, solar cells, sensors and a long list of other things. More than 90 per cent of the world's semiconductor electronics use wafers made this way.
It is the step upstream of everything else, and India has been buying the equipment for it from Germany, Korea, the United States and China.
Why solar comes first
The sequencing follows a policy deadline rather than a market hunch.
The Ministry of New and Renewable Energy has proposed bringing solar ingots and wafers under the Approved List of Models and Manufacturers from 1 June 2028, which forces module makers to source those components locally. Grew Solar, Vikram Solar and Swelect Energy are already building ingot and wafer capacity in anticipation.
A domestic equipment supplier in that window is selling into demand that regulation is creating on a published schedule. Elavarasan said the company hopes to supply machine capacity supporting roughly 10 GW of cell production within three years, and is working to secure an order for around 2 GW from a major Indian solar manufacturer. If that order lands, he put the topline at around ₹300 crore by FY28.
For chips, the strategy inverts
Raana does not plan to sell chip-making machines at all.
Elavarasan's position is that for semiconductors the company wants to supply only wafers, holding the intellectual property for ingot and wafer manufacturing itself. Machines for solar, wafers for chips. A commercial 12-inch CZ machine for chips is roughly three years out.
That is a sharper call than it looks. Selling equipment brings revenue sooner and hands your capability to whoever buys it. Holding the process and selling the output keeps the IP and the margin, but needs considerably more capital to get there.
What already exists
This is not a company working from a slide deck. It has more than 40 CZ machines deployed today, producing 2, 4 and 6-inch ingots, mostly sitting in defence, atomic and other national laboratories for research rather than volume production. It has also deployed machines for materials like lithium niobate and germanium, used in quantum applications and infrared cameras.
The machines are about 70 per cent localised, a level Elavarasan expects to keep raising. A 40,000 square foot facility in Hosur is being set up to manufacture them.
Why this is the Tamil Nadu story to watch
Hosur and Chennai already anchor a working electronics manufacturing corridor. What makes this one different is its position in the stack.
Most Indian semiconductor news is about assembly, testing and packaging, or about a fab that will take years and a great deal of subsidy to stand up. Capital equipment is the layer almost nobody goes after, because it is slow, unglamorous, and needs deep process knowledge more than it needs deep pockets.
A 70 per cent localised crystal puller built in Hosur is a smaller headline than a fab. It is also considerably harder to buy your way into later.