Tata Power Company Limited has informed the Exchange about Update on Litigation

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TATAPOWER · price

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Price reactionminutes from the announcement price · days from the prior close

-1.8%Reaction day

₹406.90

prior close

₹400.00

announcement price

After-mkt

timing

Nifty 100market · index membership as recorded later (tracked since Jun 2026)-0.2%-1.5% vs market

Power peers, median of 35sector · industry level-0.3%-1.5% vs sector

On the reaction day the stock moved 1.5 pts less than Nifty 100 and 1.5 pts less than its Power peers, over the same two closes: a difference in percentage points, not a measure of what the filing did.

Minutes after the announcementfrom the announcement price · no benchmark

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Sessions after the filingfrom the prior close

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Reaction day

-1.8-0.2-1.5-0.3-1.5

Next day

-1.3-0.0-1.2-0.3-0.9

-1.4+0.0-1.4-0.4-1.0

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15d

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-4.4-2.7-1.7-5.1+0.7

-2.9-1.9-1.0-6.2+3.3

UpDownMarket · Nifty 100Sector · Power peers, median of 35Pending

Minute windows have no benchmark: there is no intraday index history to compare against.

AI summary

Tata Power has received an adverse arbitration award from the Singapore International Arbitration Centre (SIAC) in a dispute with Kleros Capital Partners Limited, which had sued the company in November 2020. A 3-member arbitral tribunal ruled 2:1 in favour of partially allowing Kleros's claim, awarding damages of USD 490.32 million (approximately ₹4,170 crore) with 5.33% simple interest accruing from November 30, 2020, plus costs of USD 8.29 million (approximately ₹705 crore) with interest from July 1, 2025. Total potential liability is roughly USD 498.6 million plus running interest, which could exceed ₹4,800 crore. The company is reviewing the award and evaluating all options, including challenging it. This is a continuation of an earlier intimation from August 18, 2023.

Likely market impact

This is a significant negative development for Tata Power shareholders. An adverse arbitration award of nearly ₹4,200 crore in damages (plus interest) represents a material financial liability, though the company still retains the option to challenge or set aside the award. The stock may face short-term pressure on the news, with the extent of impact depending on whether Tata Power can successfully overturn or reduce the award on appeal.