Case 037Buy-side portfolio judgementCore
Advise a long-only manager on building an ESG thesis on Hiravati Textiles: high water use, two effluent fines in three years, and export customers asking for audited data. What changes in the cash flows and the cost of capital?
1The situation
Hiravati Textiles dyes and finishes 100,000 tonnes of cotton fabric a year. Revenue is Rs 3,000 crore and EBITDA Rs 360 crore; 40% of revenue is exports. It uses 150 litres of water per kg of fabric against a peer average of 90, and water sourcing plus effluent treatment costs about Rs 60 per kilolitre. It has paid two pollution fines in three years, and last year one plant was shut for 20 days by the state pollution board.
Its two largest export customers, together Rs 500 crore of orders, have written that they need audited water and chemical data from next year to keep sourcing. Management has costed a water recycling plant at Rs 150 crore that would cut use to about 95 litres per kg. A long-only fund holds the stock and asks you how to turn this into an investment thesis.
2Your task
How would you advise the manager: which issues move which lines of the model, by how much, and what would you ask the company to do?
Quick check
Which of these is the largest recurring cost of the water problem today?
Worked solution
Try it on paper, then open one step at a time.
30-second answerThe answer to give first
Advise the manager to build the thesis line by line: Hiravati's water problem is an extra Rs 36 crore a year of cost, about Rs 62 crore of export contribution at risk, and a closure risk that justifies a higher discount rate. Together they put roughly a fifth of EBITDA in play. The Rs 150 crore recycling plant saves about Rs 33 crore a year and answers the audits, so the engagement ask is simple: commit the capex and publish audited data. Priced for the bad outcome, that makes an investable thesis.
Step 1Why does an ESG view need to reach the model?
A family worried that its house floods every monsoon does not decide anything by calling the house unsustainable. It prices the repairs, the insurance and what a buyer would knock off, then decides whether to build a drain. An ESG concern becomes an investment thesis only when each issue is traced to a line in the model, a cost, a revenue risk or a discount rate, and sized. A long-only manager holding for years needs that translation, because it turns a reputational worry into a number the portfolio can weigh against the price.
Step 2How big is each line?
Work each one from the facts. Water: 100,000 tonnes at 150 litres per kg is 15 million kilolitres, Rs 90 crore at Rs 60; at the peer's 90 litres it would be Rs 54 crore. The water gap alone is Rs 36 crore a year, 10% of EBITDA, and it is a cost peers do not carry. Customers: if half of the Rs 500 crore of orders moved to an audited supplier, at a 25% contribution margin Hiravati loses Rs 62.5 crore of EBITDA. Closure: a 90-day shutdown of the largest plant, 40% of capacity, costs about Rs 36 crore. Fines themselves are small; they matter as evidence that closure risk is real.
| Issue | Model line | Rs crore a year | How certain |
|---|---|---|---|
| Water use 150 against 90 L/kg | Operating cost | 36 | Certain, every year |
| Export customers need audited data | Revenue and contribution | 62.5 | Likely without action |
| Closure order at the largest plant | EBITDA, one-off | 36 | Possible |
| Tighter pollution rules | Discount rate, +0.5 point | value -7% | Judgement |
Step 3What about the cost of capital?
Be careful here, because this is where ESG theses get vague. Add to the discount rate only for risk you cannot put into the cash flows, and say how much and why. Regulatory tightening that could shut plants is such a risk. Half a point on a 12% discount rate with 5% long-run growth cuts the value of a perpetuity by about 7%. Do not also subtract the expected closure cost in the cash flows and then add a large premium for the same risk; that counts it twice.
Step 4What do you tell the manager to do?
Turn the analysis into an ask and a test. The recycling plant costs Rs 150 crore and saves about Rs 33 crore a year, a payback of about 4.5 years, before counting the customers it keeps. The engagement ask is a dated capex commitment and audited water data within a year; the thesis is investable if the share price already reflects the bad case and the company commits to the fix. If management refuses both, the risk is structural and the position size should reflect it.
Where candidates lose it
The common loss is answering with a framework, the E, the S and the G, and never reaching a number. The manager asked for a thesis; without the Rs 36 crore of water cost and the orders at risk, there is nothing to weigh against the price.
The second is loading every ESG worry onto the discount rate. A higher rate is a blunt tool that hides which risk you mean; cash flow effects belong in the cash flows.
What the interviewer asks next
- How would you verify the company's claim that the recycling plant cuts use to 95 litres per kg?
- The customers accept unaudited data for one more year. Does the thesis change?
- How would you compare Hiravati with a peer that already has audited data but trades at a higher multiple?
Asked at Neuberger Berman, Investment Research, New York, 2025 (Wall Street Oasis): how I would advice a long only manager on establishing an esg investment thesis
Company names and figures are illustrative.