2.1 Material accounting policies
a) Basis of preparation 
"The standalone financial statements have been prepared in accordance with Indian Accounting Standards (Ind AS) notified under Section 133 read with Companies (Indian Accounting Standards) (Amendment) Rules, 2016 and the relevant provisions of the Act. Accounting policies have been consistently applied except where a newly issued accounting standard is initially adopted or a revision to an existing accounting standard requires a change in the accounting policy hitherto in use. The financial statements are presented in INR and all values are rounded to the nearest million except where otherwise indicated. " 
Historical cost convention 
The standalone financial statements have been prepared on a historical cost convention on a going concern basis except for certain financial assets and financial liabilities which are measured at fair value. 
b)    Use of estimates 
The preparation of financial statement in conformity with Ind AS requires the management to make judgements, estimates and assumptions that affect the reported amounts of revenues, expenses, assets and liabilities and the disclosure of contingent liabilities, at the end of the reporting period. Although these estimates are based on the management's best knowledge of current events and actions, uncertainty about these assumptions and estimates could result in the outcomes requiring a material adjustment to the carrying amounts of assets or liabilities in future periods. 
c)    Operating cycle 
Based on the nature of the operations and the time between the acquisition of assets for processing and their realisation in cash or cash equivalents, the Company has ascertained its operating cycle as twelve months for the purpose of current/non-current classification of assets and liabilities. 
d)    Revenue from contracts with customers 
Revenue from contracts with customers is recognised when control of the goods or services are transferred to the customer at an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. Revenue excludes taxes collected on behalf of government. 
(i) Rendering of services 
The Company generates revenue from rendering of services including engineering, procurement and construction services, operation and maintenance and management services. Consideration received for services is recognised as revenue in the year when the service is performed by reference to the stage of competition at the reporting date, when outcome can be assessed reliably. A contract's stage of completion is assessed by management by comparing the work completed with the scope of work. 
(ii) Engineering, procurement and construction contract 
Construction revenue and costs are recognised by reference to the stage of completion of the construction activity at the balance sheet date, as measured by the proportion that contract costs incurred for work performed to date bear to the estimated total contract costs. Where the outcome of the construction cannot be estimated reliably, revenue is recognised to the extent of the construction costs incurred if it is probable that they will be recoverable. When the outcome of the contract is ascertained reliably, contract revenue is recognised at cost of work performed on the contract plus proportionate margin, using the percentage of completion method i.e. over the period of time. The estimated outcome of a contract is considered reliable when all the following conditions are satisfied: 
i.    The amount of revenue can be measured reliably, 
ii.    It is probable that the economic benefits associated with the contract will flow to the Company, 
iii.    The stage of completion of the contract at the end of the reporting period can be measured reliably, 
iv.    The costs incurred or to be incurred in respect of the contract can be measured reliably Provision is made for all losses incurred to the balance sheet date. Variations in contract work, claims and incentive payments are recognised to the extent that it is probable that they will result in revenue and they are capable of being reliably measured. Expected loss, if any, on a contract is recognised as expense in the period in which it is foreseen, irrespective of the stage of completion of the contract. For contracts where progress billing exceeds the aggregate of contract costs incurred to-date and recognised profits (or recognised losses, as the case may be), the surplus is shown as the amount due to customers. Amount received before the related work is performed are disclosed in the financial statement as a liability towards advance received. Amounts billed for work performed but yet to be paid by the customers are disclosed in the financial statement 
as trade receivables. Work performed but yet not billed to the Customer are disclosed as unbilled revenue." 
(iii)    Interest income 
Interest income is recorded using the effective interest rate (EIR). EIR is the rate that exactly discounts the estimated future cash payments or receipts over the expected life of the financial instrument or a shorter period, where appropriate, to the gross carrying amount of the financial asset or to the amortised cost of the financial liability. When calculating the effective interest rate, the Company estimates the expected cash flows by considering all the contractual terms of the financial instrument but does not consider the expected credit losses. Interest income is included in other income in the Statement of Profit and Loss. 
(iv)    Income from services (O&M solar) 
Revenue from O&M service contracts are recognised on monthly basis, after completion of project on pro rata basis, over the period of contract. 
e)    Borrowing costs 
Borrowing costs directly attributable to the acquisitions, construction or production of a qualifying asset are capitalised during the period of time that is necessary to complete and prepare the asset for its intended use or sale. Other borrowing costs are expensed in the period in which they are incurred and reported in finance costs. 
f)    Impairment of non-financial assets 
For impairment assessment purposes, assets are grouped at the lowest levels for which there are largely independent cash inflows (cash¬ generating units). As a result, some assets are tested individually for impairment and some are tested at cash-generating unit level. All individual assets or cash-generating units are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. 
An impairment loss is recognised for the amount by which the asset's (or cash-generating unit's) carrying amount exceeds its recoverable amount, which is the higher of fair value less costs of disposal and value-in-use. To determine the value-in-use, management estimates expected future cash flows from each cash-generating unit and determines a suitable discount rate in order to calculate the present value of those 
cash flows. The date used for impairment testing procedures are directly linked to the Company's latest approved budget, adjusted as necessary to exclude the effects of future reorganisations and asset enhancements. Discount factors are determined individually for each cash¬ generating unit and reflect current market assessments of the time value of money and asset-specific risk factors. 
Impairment losses are charged in the Statement of Profit and Loss. Further, impairment loss is reversed if the asset's or cash-generating unit's recoverable amount exceeds its carrying amount. The reversal is limited so that the carrying of the asset does not exceed its recoverable amount, nor exceed the carrying amount that would have been determined, net of depreciation, had no impairment loss been recognised for the asset in prior years. Such reversal is recognised in the Statement of Profit and Loss unless the asset is carried at a revalued amount, in which case, the reversal is treated as an increase in revaluation. 
g) Financial instruments 
Recognition, initial measurement and derecognition 
Financial assets and financial liabilities are recognised when the Company becomes a party to the contractual provisions of the financial instrument, and, except for trade receivables which do not contain a significant financing component, these are measured initially at: 
a)    fair value, in case of financial instruments subsequently carried at fair value through profit or loss (FVTPL); 
b)    fair value adjusted for transaction costs, in case of all other financial instruments. 
Trade receivables that do not contain a significant financing component or for which the Company has applied the practical expedient are measured at the transaction price determined under Ind AS 115. Refer to the accounting policies in section (d) Revenue from contracts with customers. 
Financial assets are derecognised when the contractual rights to the cash flows from the financial asset expire, or when the financial asset and substantially all the risks and rewards are transferred. A financial liability is derecognised when the underlying obligation specified in the contract is discharged, cancelled or expires. 
Classification and subsequent measurement of financial assets 
Different criteria to determine impairment are applied for each category of financial assets, which are described below. 
For purposes of subsequent measurement, financial assets are classified in three categories: 
•    Financial assets at amortised cost 
•    Financial assets at fair value through other comprehensive income (FVOCI) 
•    Financial assets, derivatives and equity instruments at FVTPL 
(l) Financial assets at amortised cost 
Classification and subsequent measurement of financial liabilities 
The Company's financial liabilities include borrowings, trade and other payables and derivative financial instruments. 
Financial liabilities are measured subsequently at amortised cost using the effective interest method except for derivatives and financial liabilities designated at FVTPL, which are carried subsequently at fair value with gains or losses recognised in profit or loss. 
A 'Financial asset' is measured at the amortised cost if both the following conditions are met: 
(i)    The asset is held within a business model whose objective is to hold assets for collecting contractual cash flows, and 
(ii)    Contractual terms of the asset give rise on specified dates to cash flows that are solely payments of principal and interest (SPPI) on the principal amount outstanding. 
After initial measurement, such financial assets are subsequently measured at amortised cost using the effective interest rate (EIR) method. Amortised cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The EIR amortisation is included in finance income in the profit or loss. The losses arising from impairment are recognised in the profit or loss. Amortised cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. 
Impairment of financial assets 
In accordance with Ind-AS 109, the Company applies expected credit loss (ECL) model for 
measurement and recognition of impairment loss for financial assets carried at amortised cost. 
ECL is the difference between all contractual cash flows that are due to the Company in accordance with the contract and all the cash flows that the Company expects to receive. When estimating the cash flows, the Company is required to consider : 
- All contractual terms of the financial assets (including prepayment and extension) over the expected life of the assets. 
Cash flows from the sale of collateral held or other credit enhancements that are integral to the contractual terms. 
Trade receivables 
The Company applies simplified approach permitted by Ind AS 109 Financial Instruments, which requires expected lifetime losses to be recognised from initial recognition of receivables. 
Other financial assets 
For recognition of impairment loss on other financial assets and risk exposure, the Company determines whether there has been a significant increase in the credit risk since initial recognition and if credit risk has increased significantly, life time impairment loss is provided otherwise provides for 12 month expected credit losses. 
Classification and subsequent measurement of financial liabilities 
Financial liabilities are measured subsequently at amortised cost using the effective interest method except for derivatives and financial liabilities designated at FVTPL, which are carried subsequently at fair value with gains or losses recognised in profit or loss. If the company revises its estimates of payments, it shall adjust the amortised cost of a financial liability to reflect actual and revised estimated contractual cash flows. The company recalculates the amortised cost of the financial liability as the present value of the estimated future contractual cash flows that are discounted at the financial instrument's original effective interest rate. The adjustment is recognised in the statement of profit and loss as Income or Expense. 
Offsetting of financial assets and financial liabilities 
Financial assets and financial liabilities are offset and the net amount is reported in the balance sheet if there is a currently enforceable legal right to offset the recognised amounts and there is an 
intention to settle on a net basis, to realise the assets and settle the liabilities simultaneously. 
Derivative financial instruments 
Initial recognition and subsequent measurement 
The Company uses derivative financial instruments, such as forward currency contracts, cross currency rate swaps to hedge its foreign currency risks. Such derivative financial instruments are initially recognised at fair value on the date on which a derivative contract is entered into and are subsequently re-measured at fair value. Derivatives are carried as financial assets when the fair value is positive and as financial liabilities when the fair value is negative. 
Compound financial instruments 
Compound financial instruments are separated into liability and equity components based on the terms of contract. On the issuance of compound financial instruments, the fair value of liability component is determined using a market rate for an equivalent instrument. This amount is classified as a financial liability measured at amortised cost (net of transaction costs) until it is extinguished on conversion or redemption. The equity component is classified under other equity. 
(2)    Financial assets at fair value through other comprehensive income (FVOCI) 
Financial assets at fair value through other comprehensive income (FVOCI). Financial assets that meet the following conditions are measured initially as well as at the end of each reporting date at fair value, recognised in other comprehensive income (OCI). 
a)    The objective of the business model is achieved both by collecting contractual cash flows and selling the financial assets, and 
b)    The contractual terms of the asset give rise on specified dates to cash flows that represent solely payment of principal and interest. 
(3)    Financial assets, derivatives and equity instruments at FVTPL 
Financial assets at fair value through profit or loss (FVTPL). Financial assets that do not meet the amortised cost criteria or FVTOCI criteria are measured at FVTPL. Financial assets at FVTPL are measured at fair value at the end of each reporting period, with any gains or losses arising on remeasurement recognised in profit or loss. The net gain or loss recognised in profit or loss incorporates any dividend or interest earned on the financial asset. 
h) Income taxes 
Tax expense recognised in profit or loss comprises the sum of deferred tax and current tax. Current and deferred tax is recognised in profit or loss, except to the extent that it relates to items recognised in other comprehensive income or directly in equity. In this case, the tax is also recognised in other comprehensive income or directly in equity, respectively. 
Current tax 
Current tax is measured at the amount expected to be paid using the tax laws that have been enacted or substantively enacted by the end of the reporting period and includes any adjustment to tax payable in respect of previous years. The carrying amounts of deferred tax are reviewed at the end of each reporting period on the basis of its most likely amount and adjusted if needed. Assessing the most likely amount of current and deferred tax in case of uncertainties (e.g. as a result of the need to interpreting the requirements of the applicable tax law), requires the Company to apply judgements in considering whether it is probable that the taxation authority will accept the tax treatment retained. The Company measures its tax balances either based on the most likely amount or the expected value, depending on which method provides a better prediction of the resolution of the uncertainty." 
Deferred tax 
Deferred income taxes are calculated using the liability method on temporary differences arising between the tax bases of assets and liabilities and their carrying amounts in the financial statements. Deferred income tax is measured using tax rates and tax laws that have been enacted or substantively enacted by the end of the reporting period and are expected to apply when the related asset is realised or the liability is settled. Deferred income tax is not accounted for if it arises from initial recognition of an asset or liability in a transaction other than a business combination that at the time of the transaction affects neither accounting profit nor taxable profit (tax loss). 
Deferred tax assets are recognised to the extent it is probable that the underlying tax loss or deductible temporary difference will be utilised against future taxable income. This is assessed based on the Company's forecast of future operating results, adjusted for significant non¬ taxable income and expenses and specific limits on the use of any unused tax loss or credit. The carrying amounts of deferred tax assets 
(including minimum alternate tax( MAT) credit entitlement) are reviewed at the end of each reporting period and adjusted to the extent that it is no longer probable that sufficient taxable profit will be available to allow the benefit of part or all of that deferred tax asset to be utilised. 
Deferred tax liabilities are generally recognised in full, although Ind AS 12 specifies limited exemptions. As a result of these exemptions the Company does not recognise deferred tax on temporary differences relating to goodwill. Deferred tax liabilities are recognised on taxable temporary differences arising on investments in subsidiaries, joint ventures and associates, except where the Company is able to control the reversal of the temporary difference and it is probable that the temporary difference will not reverse in the foreseeable future. The Company does not offset deferred tax assets and liabilities unless it has a legally enforceable right to set off current tax assets against current tax liabilities and the deferred tax relates to the same taxable entity and levied by same taxation authority. 
i) Cash and cash equivalents 
Cash and cash equivalents comprise cash on hand and demand deposits, together with other short-term, highly liquid investments maturing within 3 months from the date of acquisition. Cash and cash equivalent are readily convertible into known amounts of cash and are subject to an insignificant risk of changes in value.  
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