<?xml version="1.0" encoding="UTF-8" standalone="no"?><!--IFIndAs V2.1 (26-06-2026)--><xbrli:xbrl xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-01-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/IntegratedFinance_IndAS/2026-01-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="http://www.sebi.gov.in/xbrl/IntegratedFinance_IndAS/2026-01-31/in-capmkt-roles" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2026-01-31/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 xlink:href="in-capmkt-ent-2026-01-31.xsd" xlink:type="simple"/><xbrli:context id="OneD"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">532725</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-04-01</xbrli:startDate><xbrli:endDate>2026-06-30</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="OneExpenses1D"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">532725</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-04-01</xbrli:startDate><xbrli:endDate>2026-06-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:DetailsOfOtherExpensesAxis">in-capmkt:OtherExpenses1Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:context id="OneExpenses2D"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">532725</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-04-01</xbrli:startDate><xbrli:endDate>2026-06-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:DetailsOfOtherExpensesAxis">in-capmkt:OtherExpenses2Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ItemsThatWillBeReclassifiedToProfitAndLoss11"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">532725</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-04-01</xbrli:startDate><xbrli:endDate>2026-06-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ItemsThatWillBeReclassifiedToProfitAndLossAxis"><in-capmkt:ItemsThatWillBeReclassifiedToProfitAndLossDomain>ItemsThatWillBeReclassifiedToProfitAndLoss1</in-capmkt:ItemsThatWillBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><xbrli:unit id="INRPerShare"><xbrli:divide><xbrli:unitNumerator><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unitNumerator><xbrli:unitDenominator><xbrli:measure>xbrli:shares</xbrli:measure></xbrli:unitDenominator></xbrli:divide></xbrli:unit><in-capmkt:ScripCode contextRef="OneD">532725</in-capmkt:ScripCode><in-capmkt:Symbol contextRef="OneD">SOLARINDS</in-capmkt:Symbol><in-capmkt:MSEISymbol contextRef="OneD">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="OneD">INE343H01029</in-capmkt:ISIN><in-capmkt:NameOfTheCompany contextRef="OneD">Solar Industries India Limited</in-capmkt:NameOfTheCompany><in-capmkt:TypeOfCompany contextRef="OneD">Main Board</in-capmkt:TypeOfCompany><in-capmkt:ClassOfSecurity contextRef="OneD">Equity</in-capmkt:ClassOfSecurity><in-capmkt:DateOfStartOfFinancialYear contextRef="OneD">2026-04-01</in-capmkt:DateOfStartOfFinancialYear><in-capmkt:DateOfEndOfFinancialYear contextRef="OneD">2027-03-31</in-capmkt:DateOfEndOfFinancialYear><in-capmkt:DateOfBoardMeetingWhenFinancialResultsWereApproved contextRef="OneD">2026-08-13</in-capmkt:DateOfBoardMeetingWhenFinancialResultsWereApproved><in-capmkt:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2026-08-06</in-capmkt:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange><in-capmkt:DescriptionOfPresentationCurrency contextRef="OneD">INR</in-capmkt:DescriptionOfPresentationCurrency><in-capmkt:LevelOfRounding contextRef="OneD">Crores</in-capmkt:LevelOfRounding><in-capmkt:TypeOfReportingPeriod contextRef="OneD">Quarterly</in-capmkt:TypeOfReportingPeriod><in-capmkt:ReportingQuarter contextRef="OneD">First quarter</in-capmkt:ReportingQuarter><in-capmkt:IsCompanyReportingMultisegmentOrSingleSegment contextRef="OneD">Single segment</in-capmkt:IsCompanyReportingMultisegmentOrSingleSegment><in-capmkt:DescriptionOfSingleSegment contextRef="OneD">MANUFACTURING OF EXPLOSIVES AND INITIATING SYSTEMS</in-capmkt:DescriptionOfSingleSegment><in-capmkt:DateOfStartOfBoardMeeting contextRef="OneD">2026-08-13</in-capmkt:DateOfStartOfBoardMeeting><in-capmkt:StartTimeOfBoardMeeting contextRef="OneD">01:30:00</in-capmkt:StartTimeOfBoardMeeting><in-capmkt:DateOfEndOfBoardMeeting contextRef="OneD">2026-08-13</in-capmkt:DateOfEndOfBoardMeeting><in-capmkt:EndTimeOfBoardMeeting contextRef="OneD">02:00:00</in-capmkt:EndTimeOfBoardMeeting><in-capmkt:DeclarationOfUnmodifiedOpinionOrStatementOnImpactOfAuditQualification contextRef="OneD">Not applicable</in-capmkt:DeclarationOfUnmodifiedOpinionOrStatementOnImpactOfAuditQualification><in-capmkt:WhetherStatementOnDeviationOrVariationForProceedsOfPublicIssueOrRightIssueOrPreferentialIssueOrQIPEtcIsApplicableToTheCompanyForTheCurrentQuarter contextRef="OneD">false</in-capmkt:WhetherStatementOnDeviationOrVariationForProceedsOfPublicIssueOrRightIssueOrPreferentialIssueOrQIPEtcIsApplicableToTheCompanyForTheCurrentQuarter><in-capmkt:WhetherTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesIsApplicableToTheEntity contextRef="OneD">false</in-capmkt:WhetherTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesIsApplicableToTheEntity><in-capmkt:NoteForNonApplicabilityOfTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesToTheEntity contextRef="OneD">Explanatory Notes to the Unaudited Standalone Financial Results &lt;br /&gt; 
 &lt;br /&gt; 
1	The Unaudited Standalone Financial Results for the quarter ended June 30, 2026 of SOLAR INDUSTRIES INDIA LIMITED (the "Company") have been reviewed and recommended by the Audit Committee and subsequently approved by the Board of Directors at their respective meeting held on August 13, 2026. The Company confirms that its statutory auditors have carried out limited review of the aforesaid results for the quarter ended June 30, 2026. &lt;br /&gt; 
	 &lt;br /&gt; 
2	These results have been prepared in accordance with the Indian Accounting Standard (referred to as “Ind AS")  prescribed under Section 133 of the Companies Act 2013 read with Companies (Indian Accounting Standards) Rules, 2015 as amended from time to time. &lt;br /&gt; 
3	The Company has identified 'Explosives, its accessories and related services', as its only reportable segment as defined under Ind AS 108 - Operating Segments. Accordingly, no separate segment information has been provided. &lt;br /&gt; 
  &lt;br /&gt; 
4	During the quarter ended June 30, 2026,  the Company has partially redeemed 292 (Two Hundred and Ninety two) unsecured, rated, listed, senior, redeemable, non-convertible debentures (NCDs) having face value of Rs. 1,00,000/- (One lakh) each amounting to Rs. 2.92 Crores (Two crores and ninety two lakh ) and made an Interest Payment amounting to Rs. 0.21 Crores (Twenty one lakh) at a coupon rate of 7.06% per annum. &lt;br /&gt; 
As on June 30, 2026  the aggregate amount of outstanding NCD is Rs. 8.75 Crores (Eight crore seventy five lakhs). &lt;br /&gt; 
5	During the quarter ended June 30, 2026, the Company has issued Commercial Paper in favour of Kotak Mahindra Bank Limited amounting to Rs. 75.00 Crores which will mature on September 17, 2026. &lt;br /&gt; 
6	Formulae for the computation of ratios are given in Annexure A. &lt;br /&gt; 
7	The figures of the last quarter ended March 31, 2026 are the balancing figures between the audited figures in respect of the full financial year ended March 31, 2026 and the published year-to-date figures up to the third quarter of the financial year. &lt;br /&gt; 
8	As per Regulation 46(2) of the SEBI (Listing Obligations &amp; Disclosure Requirements) Regulations, 2015, Results are available on Company's website-www.solargroup.com. &lt;br /&gt; 
									 &lt;br /&gt; 
 &lt;br /&gt; 
</in-capmkt:NoteForNonApplicabilityOfTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesToTheEntity><in-capmkt:DateOfStartOfReportingPeriod contextRef="OneD">2026-04-01</in-capmkt:DateOfStartOfReportingPeriod><in-capmkt:DateOfEndOfReportingPeriod contextRef="OneD">2026-06-30</in-capmkt:DateOfEndOfReportingPeriod><in-capmkt:WhetherResultsAreAuditedOrUnaudited contextRef="OneD">Unaudited</in-capmkt:WhetherResultsAreAuditedOrUnaudited><in-capmkt:NatureOfReportStandaloneConsolidated contextRef="OneD">Standalone</in-capmkt:NatureOfReportStandaloneConsolidated><in-capmkt:RevenueFromOperations contextRef="OneD" decimals="-5" unitRef="INR">16563200000</in-capmkt:RevenueFromOperations><in-capmkt:OtherIncome contextRef="OneD" decimals="-5" unitRef="INR">298300000</in-capmkt:OtherIncome><in-capmkt:Income contextRef="OneD" decimals="-5" unitRef="INR">16861500000</in-capmkt:Income><in-capmkt:CostOfMaterialsConsumed contextRef="OneD" decimals="-5" unitRef="INR">9048200000</in-capmkt:CostOfMaterialsConsumed><in-capmkt:PurchasesOfStockInTrade contextRef="OneD" decimals="-5" unitRef="INR">160500000</in-capmkt:PurchasesOfStockInTrade><in-capmkt:ChangesInInventoriesOfFinishedGoodsWorkInProgressAndStockInTrade contextRef="OneD" decimals="-5" unitRef="INR">-292400000</in-capmkt:ChangesInInventoriesOfFinishedGoodsWorkInProgressAndStockInTrade><in-capmkt:EmployeeBenefitExpense contextRef="OneD" decimals="-6" unitRef="INR">845000000</in-capmkt:EmployeeBenefitExpense><in-capmkt:FinanceCosts contextRef="OneD" decimals="-5" unitRef="INR">68800000</in-capmkt:FinanceCosts><in-capmkt:DepreciationDepletionAndAmortisationExpense contextRef="OneD" decimals="-5" unitRef="INR">280500000</in-capmkt:DepreciationDepletionAndAmortisationExpense><in-capmkt:OtherExpenses contextRef="OneD" decimals="-5" unitRef="INR">1930500000</in-capmkt:OtherExpenses><in-capmkt:Expenses contextRef="OneD" decimals="-5" unitRef="INR">12041100000</in-capmkt:Expenses><in-capmkt:ProfitBeforeExceptionalItemsAndTax contextRef="OneD" decimals="-5" unitRef="INR">4820400000</in-capmkt:ProfitBeforeExceptionalItemsAndTax><in-capmkt:ExceptionalItemsBeforeTax contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:ExceptionalItemsBeforeTax><in-capmkt:ProfitBeforeTax contextRef="OneD" decimals="-5" unitRef="INR">4820400000</in-capmkt:ProfitBeforeTax><in-capmkt:CurrentTax contextRef="OneD" decimals="-5" unitRef="INR">1189100000</in-capmkt:CurrentTax><in-capmkt:DeferredTax contextRef="OneD" decimals="-5" unitRef="INR">47500000</in-capmkt:DeferredTax><in-capmkt:TaxExpense contextRef="OneD" decimals="-5" unitRef="INR">1236600000</in-capmkt:TaxExpense><in-capmkt:NetMovementInRegulatoryDeferralAccountBalancesRelatedToProfitOrLossAndTheRelatedDeferredTaxMovement contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:NetMovementInRegulatoryDeferralAccountBalancesRelatedToProfitOrLossAndTheRelatedDeferredTaxMovement><in-capmkt:ProfitLossForPeriodFromContinuingOperations contextRef="OneD" decimals="-5" unitRef="INR">3583800000</in-capmkt:ProfitLossForPeriodFromContinuingOperations><in-capmkt:ProfitLossFromDiscontinuedOperationsBeforeTax contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:ProfitLossFromDiscontinuedOperationsBeforeTax><in-capmkt:TaxExpenseOfDiscontinuedOperations contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:TaxExpenseOfDiscontinuedOperations><in-capmkt:ProfitLossFromDiscontinuedOperationsAfterTax contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:ProfitLossFromDiscontinuedOperationsAfterTax><in-capmkt:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod contextRef="OneD" decimals="-7" unitRef="INR">0</in-capmkt:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod><in-capmkt:ProfitLossForPeriod contextRef="OneD" decimals="-5" unitRef="INR">3583800000</in-capmkt:ProfitLossForPeriod><in-capmkt:OtherComprehensiveIncomeNetOfTaxes contextRef="OneD" decimals="-6" unitRef="INR">-28000000</in-capmkt:OtherComprehensiveIncomeNetOfTaxes><in-capmkt:ComprehensiveIncomeForThePeriod contextRef="OneD" decimals="-5" unitRef="INR">3555800000</in-capmkt:ComprehensiveIncomeForThePeriod><in-capmkt:PaidUpValueOfEquityShareCapital contextRef="OneD" decimals="-6" unitRef="INR">181000000</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">39.6</in-capmkt:BasicEarningsLossPerShareFromContinuingOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">39.6</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">39.6</in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">39.6</in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DebtEquityRatio contextRef="OneD" decimals="INF" unitRef="pure">0.0007</in-capmkt:DebtEquityRatio><in-capmkt:DebtServiceCoverageRatio contextRef="OneD" decimals="INF" unitRef="pure">0.1883</in-capmkt:DebtServiceCoverageRatio><in-capmkt:InterestServiceCoverageRatio contextRef="OneD" decimals="INF" unitRef="pure">0.7346</in-capmkt:InterestServiceCoverageRatio><in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">1	The Unaudited Standalone Financial Results for the quarter ended June 30, 2026 of SOLAR INDUSTRIES INDIA LIMITED (the "Company") have been reviewed and recommended by the Audit Committee and subsequently approved by the Board of Directors at their respective meeting held on August 13, 2026. The Company confirms that its statutory auditors have carried out limited review of the aforesaid results for the quarter ended June 30, 2026.								 &lt;br /&gt; 
									 &lt;br /&gt; 
2	These results have been prepared in accordance with the Indian Accounting Standard (referred to as “Ind AS")  prescribed under Section 133 of the Companies Act 2013 read with Companies (Indian Accounting Standards) Rules, 2015 as amended from time to time.								 &lt;br /&gt; 
3	"The Company has identified 'Explosives, its accessories and related services', as its only reportable segment as defined under Ind AS 108 - Operating Segments. Accordingly, no separate segment information has been provided. &lt;br /&gt; 
  &lt;br /&gt; 
 "								 &lt;br /&gt; 
4	"During the quarter ended June 30, 2026,  the Company has partially redeemed 292 (Two Hundred and Ninety two) unsecured, rated, listed, senior, redeemable, non-convertible debentures (NCDs) having face value of Rs. 1,00,000/- (One lakh) each amounting to Rs. 2.92 Crores (Two crores and ninety two lakh ) and made an Interest Payment amounting to Rs. 0.21 Crores (Twenty one lakh) at a coupon rate of 7.06% per annum. &lt;br /&gt; 
As on June 30, 2026  the aggregate amount of outstanding NCD is Rs. 8.75 Crores (Eight crore seventy five lakhs)."								 &lt;br /&gt; 
5	During the quarter ended June 30, 2026, the Company has issued Commercial Paper in favour of Kotak Mahindra Bank Limited amounting to Rs. 75.00 Crores which will mature on September 17, 2026.								 &lt;br /&gt; 
6	Formulae for the computation of ratios are given in Annexure A.								 &lt;br /&gt; 
7	The figures of the last quarter ended March 31, 2026 are the balancing figures between the audited figures in respect of the full financial year ended March 31, 2026 and the published year-to-date figures up to the third quarter of the financial year.								 &lt;br /&gt; 
8	As per Regulation 46(2) of the SEBI (Listing Obligations &amp; Disclosure Requirements) Regulations, 2015, Results are available on Company's website-www.solargroup.com.								 &lt;br /&gt; 
									 &lt;br /&gt; 
</in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses1D">Other Expenses</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses1D" decimals="-6" unitRef="INR">1316000000</in-capmkt:OtherExpenses><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses2D">Freight and Forwarding Charges</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses2D" decimals="-5" unitRef="INR">614500000</in-capmkt:OtherExpenses><in-capmkt:DescriptionOfItemThatWillBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillBeReclassifiedToProfitAndLoss11">Items that will be reclassified to Profit or Loss</in-capmkt:DescriptionOfItemThatWillBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillBeReclassifiedToProfitAndLoss11" decimals="-5" unitRef="INR">-37400000</in-capmkt:AmountOfItemThatWillBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillBeReclassifiedToProfitAndLoss contextRef="OneD" decimals="-5" unitRef="INR">-37400000</in-capmkt:AmountOfItemThatWillBeReclassifiedToProfitAndLoss><in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-5" unitRef="INR">-9400000</in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss><in-capmkt:OtherComprehensiveIncome contextRef="OneD" decimals="-6" unitRef="INR">-28000000</in-capmkt:OtherComprehensiveIncome></xbrli:xbrl>