4 Stocks in Defence, Power Infra, and Battery Chemicals Creating Billion-Dollar Opportunities

Synopsis: Four Small-cap Indian companies operating in defence electronics, power infrastructure, battery chemicals, and electronics manufacturing are quietly scaling up capabilities and market positions that could translate into significantly larger businesses over the next several years, often with little of the mainstream attention their growth trajectories deserve.

Not all companies that create significant value do so in a visible way. Some of the most interesting small-cap opportunities are in businesses that are one or two steps removed from the headline themes dominating market conversation: companies that supply the radar inside a missile program, build the infrastructure that powers a data centre, or make the chemicals that go inside an EV battery. 

The four companies share the common trait of creating really big opportunities, mostly away from the spotlight, and the scale of what they are working on is just starting to appear in their financials.

1. Astra Microwave Products

Hyderabad-based Astra Microwave Products makes the radio frequency and microwave subsystems that are the backbone of India’s radar, missile and electronic warfare systems. It is not a name that appears in defence headlines but it is embedded in some of the country’s most critical programmes, QRSAM, the Uttam fire control radar for the Tejas fighter and the electronic warfare upgrades for the Su-30. 

In a defence ecosystem where India is pushing hard to indigenise, Astra occupies a position that is both rare and structurally protected. Very few companies in the world can build what Astra builds, and within India, the number is smaller still.

The company’s growth ambition is not incremental. Management has articulated a goal to triple revenue from current levels over the next four to five years, supported by an addressable market spanning radar programmes, missiles, electronic warfare, and exports that management estimates at ₹24,000 to ₹25,000 crore. 

The order book stood at ₹2,141 crore as of March 2026, with a growing share coming from exports and space electronics. A planned demerger of the space and meteorology business could eventually unlock a separately listed pure-play space electronics entity, an additional value layer that the current market price does not fully reflect.

2. Techno Electric & Engineering

Techno Electric & Engineering has been building transmission substations and power infrastructure for utilities and industrial customers across India for decades. It’s a business with a long history, a strong execution track record and steady cash generation – the sort of company that tends to get overlooked precisely because it does what it does without drama. What’s interesting today is what it’s building alongside that core business: a meaningful position in data centre infrastructure.

As India’s digital economy expands and hyperscalers race to build capacity, the demand for high-quality power infrastructure substations, switchgear, transformers, and grid connectivity inside and around data centres has surged. Techno Electric’s engineering capabilities translate directly into this market, and the company has been quietly winning data centre infrastructure contracts that represent a structurally higher-margin and faster-growing opportunity than traditional power EPC. 

The combination of a stable transmission business providing cash flow and a data centre business providing growth makes for a more compelling risk-reward than either would deliver in isolation.

3. Neogen Chemicals

Neogen Chemicals has spent years building a speciality chemicals business focused on bromination and organolithium chemistry, serving pharmaceutical, agrochemical, and industrial clients. It is now in the middle of one of the more ambitious pivots in India’s listed chemicals space: building the country’s battery chemicals ecosystem from scratch. Through its subsidiary Neogen Ionics, the company is developing capacity for lithium electrolyte salts and formulated electrolytes  products that currently come almost entirely from China and that India’s growing EV and energy storage industries will need in large volumes.

The pivot is not without execution risk, but the strategic position is genuinely rare. Neogen has entered a joint venture with Japan’s Morita Investment, a pioneer in LiPF6 production with over thirty years of technology experience, giving it access to proven process know-how that most new entrants cannot source. Electrolyte capacity of 2,000 MT is planned at Dahej, with lithium salt capacity scaling meaningfully through FY27. 

Management has guided for battery chemicals revenue of ₹300 crore plus from FY27 onward, a number that, if delivered, would represent a material transformation in the company’s revenue mix and valuation profile.

4. Kaynes Technology

Kaynes Technology is one of India’s fastest growing electronics manufacturing services (EMS) companies, offering end-to-end solutions including product design, engineering, printed circuit board assembly (PCBA), box-build integration, testing and lifecycle support across industries such as aerospace, defence, industrial automation, railways, medical devices, automotive and electric vehicles.

The company is moving up the value chain beyond traditional electronics manufacturing with its semiconductor initiatives that include outsourced semiconductor assembly and testing (OSAT), semiconductor packaging and investments in chip manufacturing infrastructure, and is positioning itself as a key player in India’s emerging semiconductor ecosystem. 

Kaynes is not just a contract assembler, it is a deep design, engineering and manufacturing player in a country where electronics manufacturing has traditionally been focused on low-value assembly. 

The opportunity Kaynes is building toward is significant. India’s electronics manufacturing ambitions  backed by PLI schemes, defence indigenisation mandates, and import substitution tailwinds  are creating demand for capable domestic EMS partners that can handle complex, low-volume, high-mix orders. 

Kaynes has invested in technical capability, customer relationships and manufacturing capacity across multiple facilities. Its customer base ranging from global aerospace primes, Indian defence PSUs to EV manufacturers  is a reflection of the quality of platform it has built. Revenue has increased at a fast clip over the last few years and the order pipeline continues to grow as more OEMs look to deepen their India manufacturing footprint.

Conclusion

The Small-cap space is often where the most interesting compounding stories begin before the growth is fully priced in, before the institutional coverage is deep, and before the business has crossed the size threshold that brings it into mainstream market conversations. The five companies covered here are each at different stages of building something considerably larger than what their current financials reflect.

Astra Microwave, Techno Electric, Neogen Chemicals, and Kaynes Technology are creating real, defensible positions in markets that are growing structurally and doing so in ways that are unlikely to be replicated quickly by new entrants. That combination of growth and barriers is precisely what long-term investors tend to look for.

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