Lumino Industries IPO Review: Strong Business, But Debt Is the Key Concern

Lumino Industries makes the cables, conductors, and power infrastructure that help electricity move from power plants to homes and businesses. Its ₹700 crore IPO, priced at ₹78 to ₹82 a share, includes a ₹500 crore fresh issue and a ₹200 crore offer for sale. At the upper price, the company is seeking a post-IPO market capitalisation of about ₹2,497 crore.

Lumino Industries IPO stands out because the business has grown strongly, earns healthy margins and has a sizeable order book. But there is another number investors cannot ignore: borrowings had risen to ₹1,856.78 crore by July 31, 2026. The central question, therefore, is whether Lumino's strong operating performance is enough to compensate for its high leverage and working-capital needs.

Lumino Industries IPO GMP

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What Does Lumino Industries Actually Do?

Think of electricity like water flowing through a city. Lumino makes the "pipes" that carry electricity and also helps build the network through which electricity travels.

The company has two main businesses. First, it makes electrical products such as power cables, aluminium conductors and household wires sold under the Lumicon brand. This business generated about 70% of its FY26 sales. Second, through its EPC business, Lumino builds power infrastructure such as transmission lines, substations and solar projects, which contributed the remaining 30%.

In simple words, Lumino makes money in two ways: it sells electrical products to customers, and it gets paid to build power projects for them. Its customers include government electricity companies, private businesses, and overseas buyers. Government customers contributed about 53% of its FY26 revenue, while the company exported to 17 countries.

One interesting part of the business is that Lumino sometimes makes the cables it needs for its own projects. About 23% of the products used in its EPC projects were made in-house in FY26. Think of it like a restaurant that grows some of its own vegetables instead of buying everything from the market. This can give Lumino better control over supply, cost, and project execution.

The company has two factories in West Bengal with a total aluminium manufacturing capacity of 40,000 tonnes a year. A new facility under development is expected to increase this to 50,980 tonnes. It also had an order book of ₹3,149.88 crore as of March 31, 2026, meaning it already had a sizeable amount of confirmed work waiting to be completed.

In short: Lumino makes the cables, builds the power infrastructure, and sometimes uses its own cables in those projects.

How Big Is the Growth Opportunity?

The broader opportunity is substantial. India's power infrastructure investment is projected to rise sharply during FY27 to FY31, while the wires and cables market is also expected to expand materially. Government programmes such as the Revamped Distribution Sector Scheme, grid modernisation and the expansion of renewable power are creating demand for transmission, distribution and related electrical equipment.

This matters because Lumino operates across both sides of this opportunity. It can manufacture the equipment required for power infrastructure and participate in projects that install that infrastructure.

But a growing industry does not automatically mean every company will grow at the same rate. Lumino is still much smaller than major listed players. For example, its ₹2,041 crore FY26 revenue is only a fraction of the scale of companies such as KEC International and Kalpataru Projects.

Its competitive position is therefore better described as that of an emerging participant rather than an industry leader. Its integrated model, order book and manufacturing capabilities give it a route to participate in the industry's growth, but its ability to capture that opportunity will depend heavily on execution and access to working capital.

What Makes Lumino Industries Strong?

Lumino's integrated business model is one of its more meaningful advantages. Making around 23% of the products used in its EPC projects internally reduces dependence on outside suppliers and gives the company greater control over availability, quality, and project scheduling. This does not eliminate raw-material risk, but it can make the supply chain easier to manage. Its UL certification for cable safety also supports its ability to serve customers in markets where product standards are demanding.

The second strength is visibility. Its ₹3,149.88 crore order book is about 1.54 times FY26 revenue, meaning the confirmed work on hand is larger than a full year's current revenue. The book is also split between manufacturing and EPC rather than being dependent on one business alone. For an investor, this does not guarantee future profit, but it provides a reasonable base of committed business from which the company can grow.

Finally, the operating performance has been impressive. Revenue grew at about 20.4% annually between FY24 and FY26, while profit grew much faster at about 35.9%. The 11.71% EBITDA margin was higher than most of its listed peers, while FY26 RoE of 24.62% was the highest in the supplied peer set. These figures suggest Lumino is not simply growing sales. It has also been relatively efficient at converting capital and revenue into profits.

What Are The Real Risks?

Government customers contributed more than half of FY26 revenue, while the top 10 customers still accounted for 46.52%. The concentration has improved sharply from previous years, but a significant portion of the business remains linked to a limited customer base and public-sector spending. Delayed approvals, slower contract awards, or delayed payments can therefore affect both revenue and cash flow.

Working capital is an even more important issue. Net working capital reached ₹716.72 crore in FY26, or about 35% of annual revenue, while the working-capital cycle stretched to 86 days. In simple words, a large amount of Lumino's money is tied up in inventory and unpaid customer bills. This helps explain why a company can report strong accounting profits but still need substantial borrowing to keep operations running.

The other risks are practical but material. EPC projects can take 24 to 30 months, creating room for cost overruns and delays. The company incurred ₹23.62 crore of project cost overruns in FY25. Raw materials such as aluminium, copper and steel can also fluctuate sharply. In addition, both factories and all four warehouses are concentrated in Howrah, West Bengal, creating regional concentration risk.

Is Lumino’s IPO Valuation Attractive?

At ₹82, Lumino's IPO values the company at 15.61 times its FY26 earnings. That looks inexpensive compared with peers such as KEC International at 19.81x and Kalpataru Projects at 22.13x, while KEI Industries and Apar Industries trade at much higher P/E multiples. Part of the discount is understandable because Lumino is much smaller and carries higher financial risk.

But the low valuation becomes more interesting when you look at the quality of the business. Lumino's 11.71% EBITDA margin is higher than six of the seven peers, while its 24.62% RoE is the highest in the comparison. Its ₹3,149.88 crore order book is also about 1.54 times its FY26 revenue, giving it a healthy pipeline of work. Its post-IPO book value of around ₹40.37 per share means investors are paying about 2.03 times book value, which is also lower than the P/B multiples of several major peers.

The problem is debt. Lumino's borrowings jumped from ₹384.16 crore at the end of FY26 to ₹1,856.78 crore by July 31, 2026. Against FY26 EBITDA of ₹238.95 crore, that works out to approximately 7.77 times EBITDA. Even after using ₹337 crore of IPO money to repay debt, borrowings would remain around ₹1,519.78 crore, or approximately 6.36 times EBITDA.

So, Lumino is being offered at a low P/E despite having strong margins, growth, and return ratios. But the low valuation also reflects a real concern: the company needs a lot of cash to fund its growth. The IPO reduces its debt, but does not solve the underlying balance-sheet pressure. For investors, this makes Lumino a clear trade-off between an attractive price and a high financial risk.

Author's Take: Should You Consider This IPO?

Lumino Industries has several things going for it. Revenue has grown at around 20% annually, profit has grown even faster, margins are healthy, the order book is strong, and RoE is among the best in its peer group. Its manufacturing-plus-EPC model also fits well with India's growing power infrastructure needs.

However, the biggest concern is the balance sheet. An 86-day working-capital cycle means a lot of cash is tied up in the business, while debt has recently jumped to ₹1,856.78 crore. Even after using ₹337 crore from the IPO to repay loans, the company would still carry significant debt. This means strong profit growth may not immediately translate into strong cash generation.

At 15.61x P/E, the IPO looks attractively priced compared with peers, especially given Lumino's strong margins and RoE. But a low P/E alone does not make a stock cheap. If the company continues to need large amounts of borrowing to fund its growth, the valuation discount may remain justified.

Overall, this IPO looks like a wait-and-watch for now. The business and industry opportunity are attractive, but the recent rise in debt creates too much uncertainty to ignore. For investors, the key thing to watch after listing will be whether Lumino can turn its profits into consistent cash flow and steadily reduce its debt.

In short: The business looks good, and the IPO price looks attractive, but the balance sheet is the key concern.

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