<?xml version="1.0" encoding="UTF-8" standalone="no"?><!--IFFIndAs--><xbrli:xbrl xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-01-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/IntegratedFinance_IndAS/2025-01-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="http://www.sebi.gov.in/xbrl/IntegratedFinance_IndAS/2025-01-31/in-capmkt-roles" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2025-01-31/in-capmkt-types" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:xlink="http://www.w3.org/1999/xlink"><link:schemaRef 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unitRef="INR">4277300000</in-capmkt:ComprehensiveIncomeForThePeriod><in-capmkt:ProfitOrLossAttributableToOwnersOfParent contextRef="OneD" decimals="-5" unitRef="INR">4290500000</in-capmkt:ProfitOrLossAttributableToOwnersOfParent><in-capmkt:ProfitOrLossAttributableToNonControllingInterests contextRef="OneD" decimals="-5" unitRef="INR">-12400000</in-capmkt:ProfitOrLossAttributableToNonControllingInterests><in-capmkt:PaidUpValueOfEquityShareCapital contextRef="OneD" decimals="-7" unitRef="INR">2800000000</in-capmkt:PaidUpValueOfEquityShareCapital><in-capmkt:FaceValueOfEquityShareCapital contextRef="OneD" decimals="INF" unitRef="INRPerShare">2</in-capmkt:FaceValueOfEquityShareCapital><in-capmkt:BasicEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.06</in-capmkt:BasicEarningsLossPerShareFromContinuingOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.06</in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations><in-capmkt:BasicEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">0</in-capmkt:BasicEarningsLossPerShareFromDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">0</in-capmkt:DilutedEarningsLossPerShareFromDiscontinuedOperations><in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.06</in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">3.06</in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">Note 1 &lt;BR&gt; 
The Consolidated financial results of Indraprastha Gas Limited IGL or the 'Company' for the quarter ended 30 June 2025 have been reviewed by the Audit Committee and approved by the Board of Directors at their respective meetings held on 30 July 2025. The statutory auditors of the Company have carried out a limited review of the aforesaid results and have expressed an unmodified review conclusion.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 2 &lt;BR&gt; 
The above results have been prepared in accordance with the recognition and measurement principles of applicable Indian Accounting Standards 'Ind-AS as notified under the Companies Indian Accounting Standards Rules 2015 as amended specified under section 133 of the Companies Act 2013.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 3(a) &lt;BR&gt; 
During Q1 FY 25-26 the trade margins were paid at the new rates following the renewal of commercial contracts with the Oil Marketing Companies OMCs effective from 01.12.2021. This renewal of agreements had been concluded in Q4 FY 24-25 and the trade margins for the current period are being recognized at these updated rates. The arrears for the period 01.04.2019 to 30.11.2021 which were subject to mutual discussions were finalized during Q4 FY 24-25. Consequently the total provision of 114.08 crores that had been recorded in previous periods was reversed in Q4 FY 24-25 in line with the requirements of IND AS 115 regarding revenue recognition.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 3(b) &lt;BR&gt; 
Delhi Development Authority DDA had raised a total demand excluding interest of Rs. 155.64 crores during 2013-14 on account of increase in license fees in respect of sites taken by the Company on lease from DDA for setting up compressed natural gas CNG stations in Delhi. The increase in license fees was related to the period 1 April 2007 to 31 March 2014. The Company had filed a writ petition on 11 October 2013 before the Hon'ble High Court of Delhi against the demand raised by DDA as the revised license fees had been increased manifold and made applicable retrospectively from financial year 2007-08. Further DDA vide communication dated 29 August 2016 had revised the total demand excluding interest to Rs. 330.73 crores for the period upto 31 March 2016. The same was also reported in the previous periods as a contingent liability. The matter is pending in the Hon'ble High Court of Delhi and the Company is of the view that such demand is not tenable and accordingly no provision has been made for this aforementioned demand raised by DDA in the books of accounts.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 4 &lt;BR&gt; 
Figures for the quarter ended 31 March 2025 represent the balancing figures between the audited figures for the full financial year and published year to date figures upto the third quarter ended 31 December 2024.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 5 &lt;BR&gt; 
The Company's business falls within a single segment in terms of the Indian Accounting Standard 108 'Operating Segments'.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 6 &lt;BR&gt; 
The statement includes the results of the following entities: &lt;BR&gt; 
a Subsidiary - IGL Genesis Technologies Limited  &lt;BR&gt; 
 &lt;BR&gt; 
 &lt;BR&gt; 
b Associates -Maharashtra Natural Gas Limited and Central U.P. Gas Limited  &lt;BR&gt; 
 &lt;BR&gt; 
Note 7 &lt;BR&gt; 
Previous period figures have been regrouped/reclassified to align with the current year classification wherever required.  &lt;BR&gt; 
 &lt;BR&gt; 
Note 8 &lt;BR&gt; 
During the previous year the shareholders of the Company have approved bonus equity shares having a face value of Rs. 2 each in the ratio of 1:1 in the month of January 2025. Consequently the total number of equity shares issued by the Company increased to 1400001600 shares of 2 each. In line with the disclosure requirements of IND AS 33 the EPS for the quarter ended 30 June 2024 have been restated based on total number of equity shares outstanding after bonus issue. </in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses1D">Excise duty</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses1D" decimals="-5" unitRef="INR">4127500000</in-capmkt:OtherExpenses><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses2D">Other expenses</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses2D" decimals="-5" unitRef="INR">4175400000</in-capmkt:OtherExpenses><in-capmkt:IncomeTaxRelatingToItemsThatWillNotBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-5" unitRef="INR">1100000</in-capmkt:IncomeTaxRelatingToItemsThatWillNotBeReclassifiedToProfitOrLoss><in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-5" unitRef="INR">-300000</in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss><in-capmkt:OtherComprehensiveIncome contextRef="OneD" decimals="-5" unitRef="INR">-800000</in-capmkt:OtherComprehensiveIncome><in-capmkt:WhetherResultsAreAuditedOrUnauditedForImpactOfAuditQualification contextRef="OneD">Unaudited</in-capmkt:WhetherResultsAreAuditedOrUnauditedForImpactOfAuditQualification><in-capmkt:DeclarationPursuantToClauseDOfSubRegulation3OfRegulation33OfSEBILODRRegulation2015 contextRef="OneD">true</in-capmkt:DeclarationPursuantToClauseDOfSubRegulation3OfRegulation33OfSEBILODRRegulation2015><in-capmkt:AuditorsFirmName contextRef="D_Auditor1">M/s PKF Sridhar &amp; Santhanam LLP</in-capmkt:AuditorsFirmName><in-capmkt:WhetherTheFirmHoldsAValidPeerReviewCertificateIssuedByPeerReviewBoardOfICAI contextRef="D_Auditor1">true</in-capmkt:WhetherTheFirmHoldsAValidPeerReviewCertificateIssuedByPeerReviewBoardOfICAI><in-capmkt:ValidityDateOfCertificate contextRef="D_Auditor1">2025-10-31</in-capmkt:ValidityDateOfCertificate></xbrli:xbrl>