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Our capital and liquidity | 12 Months Ended
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Dec. 31, 2024
Disclosure of detailed information about financial instruments [abstract] |
Our capital and liquidity | Our capital and liquidity Our overriding objective when managing capital and liquidity is to safeguard the business as a going concern. Capital is allocated in a consistent and disciplined manner. Essential capital expenditure remains our priority for capital allocation. It includes sustaining capital to ensure the integrity of our assets, high-returning replacement projects and decarbonisation investment. This is followed by ordinary dividends within our well-established returns policy. We then test investment in compelling growth projects against debt management and additional cash returns to shareholders. Our Board and senior management regularly review the capital structure and liquidity of the Group. They take into account our strategic priorities, the economic and business conditions, and any identified investment opportunities, along with the expected returns to shareholders. We expect total cash returns to shareholders over the longer term to be in a range of 40–60% of underlying earnings in aggregate through the commodity cycle. We consider various financial metrics when managing our capital structure and liquidity risk, including total capital, net debt, gearing, the overall level of borrowings and their maturity profile, liquidity levels, future cash flows, underlying EBITDA and interest cover ratios. Our total capital as at 31 December is shown in the table below.
| Note | 2024 US$m | 2023 US$m
Equity attributable to owners of Rio Tinto (see consolidated balance sheet) |  | 55,246 | 54,586
Equity attributable to non-controlling interests (see consolidated balance sheet) |  | 2,719 | 1,755
Net debt | 19 | 5,491 | 4,231
Total capital |  | 63,456 | 60,572
We have access to various forms of financing including corporate bonds issued in debt capital markets through our US Shelf and European Medium Term Note Programmes, commercial paper, project finance, bank loans and credit facilities. In November 2024, we entered into a US$7 billion bridge facility to support the funding required for the proposed acquisition of Arcadium Lithium, which is expected to close in March 2025 (refer to note 5 for details). The Group also has an existing US$7.5 billion multi-currency revolving credit facility which matures in November 2028. Both facilities remained undrawn throughout the year. At 31 December 2024, the Group’s subsidiaries had available in aggregate US$738 million (2023: US$558 million) of committed borrowing facilities; these amounts are available for use by the respective holders of each facility only and are not available for use across the Group. Our credit ratings as at 31 December, as provided by Standard & Poor’s and Moody’s Investor Services, were:
| 2024 | 2023
Long-term rating | A/A1 | A/A1
Short-term rating | A-1/P-1 | A-1/P-1
Outlook | Stable/Stable | Stable/Stable
Our unified credit status is maintained through cross guarantees, which mean the contractual obligations of Rio Tinto plc and Rio Tinto Limited are automatically guaranteed by the other. Financial liability analysis In the table below, we summarise the maturity profile of our financial liabilities on our balance sheet based on contractual undiscounted payments as at 31 December. When the amount payable is not fixed, the amount disclosed is determined by reference to the conditions existing at the end of the reporting period. This will, therefore, not necessarily agree with the amounts disclosed as the carrying value.
| 2024 | 2023
(Outflows)/Inflows | Within 1 year or on demand US$m | Between 1 and 2 years US$m | Between 2 and 5 years US$m | After 5 years US$m | Total US$m | Within 1 year or on demand US$m | Between 1 and 2 years US$m | Between 2 and 5 years US$m | After 5 years US$m | Total US$m
Non-derivative financial liabilities |  |  |  |  |  |  |  |  |  |
Trade and other financial payables(a) | (6,032) | (30) | (43) | (307) | (6,412) | (5,769) | (57) | (68) | (308) | (6,202)
Expected lease liability payments | (398) | (306) | (488) | (551) | (1,743) | (385) | (285) | (442) | (574) | (1,686)
Borrowings before swaps | (185) | (630) | (3,007) | (8,854) | (12,676) | (845) | (17) | (2,385) | (10,011) | (13,258)
Expected future interest payments(a) | (748) | (729) | (1,873) | (4,260) | (7,610) | (803) | (781) | (2,156) | (4,886) | (8,626)
Other financial liabilities | – | – | – | – | – | (4) | – | – | – | (4)
Derivative financial liabilities(b) |  |  |  |  |  |  |  |  |  |
Derivatives related to net debt – net settled | (78) | (50) | (86) | (17) | (231) | (161) | (87) | (163) | – | (411)
Derivatives related to net debt – gross settled(a) |  |  |  |  |  |  |  |  |  |
–gross inflows | 13 | 25 | 701 | – | 739 | 502 | 26 | 77 | 664 | 1,269
–gross outflows | (34) | (34) | (909) | – | (977) | (620) | (34) | (102) | (841) | (1,597)
Derivatives not related to net debt – net settled | (81) | (33) | (117) | (149) | (380) | (76) | (54) | (124) | (54) | (308)
Derivatives not related to net debt – gross settled |  |  |  |  |  |  |  |  |  |
–gross inflows | 240 | – | – | – | 240 | 499 | – | – | – | 499
–gross outflows | (240) | – | – | – | (240) | (501) | – | – | – | (501)
Total | (7,543) | (1,787) | (5,822) | (14,138) | (29,290) | (8,163) | (1,289) | (5,363) | (16,010) | (30,825)
(a)The interest payable at the year-end is removed from trade and other financial payables and shown within expected future interest payments and derivatives related to net debt. Interest payments have been projected using interest rates applicable at the end of the applicable financial year. Where debt is subject to variable interest rates, future interest payments are subject to change in line with market rates. (b)The maturity grouping is based on the earliest payment date. Our weighted average debt maturity including leases and derivatives related to debt was approximately 11 years (2023: 12 years). 24 Financial instruments and risk management Recognition and measurement We classify our financial assets into those held at amortised cost and those to be measured at fair value either through the profit and loss (FVTPL) or through other comprehensive income (FVOCI) based on the business model for managing the financial assets and the contractual terms of the cash flows.
Classification of financial asset | Amortised cost | Fair value through profit and loss | Fair value through other comprehensive income
Recognition and initial measurement | At initial recognition, trade receivables that do not have a significant financing component are recognised at their transaction price. Other financial assets are initially recognised at fair value plus related transaction costs. | The asset is initially recognised at fair value with transaction costs immediately expensed to the income statement. | The asset is initially recognised at fair value.
Subsequent measurement | Amortised cost using the effective interest method. | Fair value movements are recognised in the income statement. | Fair value gains or losses on revaluation of such equity investments, including any foreign exchange component, are recognised in other comprehensive income. Dividends are recognised in the income statement when the right to receive payment is established.
Derecognition | Any gain or loss on derecognition or modification of a financial asset held at amortised cost is recognised in the income statement. | Not applicable. | When the equity investment is derecognised, there is no recycling of fair value gains or losses previously recognised in other comprehensive income to the income statement.
Borrowings and other financial liabilities (including trade payables but excluding derivative liabilities) are recognised initially at fair value, net of transaction costs incurred, and are subsequently measured at amortised cost. Financial risk management objectives Our financial risk management objectives are: –to have in place a robust capital structure to manage the organisation through the commodity cycle –to allow our financial exposures, mainly commodity price, foreign exchange and interest rates to, in general, float with the market. Our Treasury and Commercial teams manage the following key economic risks generated from our operations: –capital and liquidity risk –credit risk –interest rate risk –commodity price risk –foreign exchange risk. These teams operate under a strong control environment, within approved limits. (i) Capital and liquidity risk Our capital and liquidity risk arises from the possibility that we may not be able to settle or meet our obligations as they fall due. Refer to our capital and liquidity section on page 197. As disclosed in note 18, under the supplier finance arrangements, the Group makes payments to participating banks on the same date as stated on the vendor’s invoice, and as such these arrangements do not give rise to additional liquidity risk. (ii) Credit risk Credit risk is the risk that our customers, or institutions that we hold investments with, are unable to meet their contractual obligations. We are exposed to credit risk in our operating activities (primarily from customer trade receivables); and from our investing activities that include government securities (primarily US Government), corporate and asset-backed securities, reverse repurchase agreements, money market funds, and balances with banks and financial institutions. Refer to note 17, note 22 and note 23 for an understanding of the size of, and the credit risk related to, each balance. (iii) Interest rate risk Our interest rate management policy is generally to borrow and invest at floating interest rates. However, we may elect to maintain a proportion of fixed-rate funding after considering market conditions, the cost and form of funding and other related factors. After the impact of hedging, 76% (2023: 68%) of our borrowings (including leases) were at floating rates. To understand how we manage interest rate risk, refer to note 20. 24 Financial instruments and risk management continued Sensitivity to interest rate changes Based on our floating rate financial instruments outstanding at 31 December 2024, the effect on our net earnings of a 100 basis point increase in US dollar Secured Overnight Financing Rate (SOFR) interest rates, with all other variables held constant, would be an expense of US$23 million (2023: US$5 million). This reflects the net debt position in 2024 and 2023. We are also exposed to interest rate volatility within shareholders’ equity. This is because we have designated some cross-currency interest rate swaps to be in a cash flow hedge relationship with our 2029 British pound sterling (GBP) loan. As we receive fixed GBP interest and pay fixed USD interest, any change in the GBP interest rate or the USD interest rate will have an impact on the fair value of the derivative within shareholders’ equity. With all factors remaining constant, a 100 basis point increase in interest rates in each of the currencies in isolation would impact equity, before tax, by a charge of US$27 million (2023: US$33 million) for GBP and a credit of US$35 million (2023: US$42 million) for USD. A 100 basis point decrease would have broadly the same impact in the opposite direction. (iv) Commodity price risk Our broad commodity base means our exposure to commodity prices is diversified. Our normal policy is to sell our products at prevailing market prices. For certain physical commodity transactions for which the price was fixed at the contract date, we enter into derivatives to achieve the prevailing market prices at the point of revenue recognition. We do not generally consider that using derivatives to fix commodity prices would provide a long-term benefit to our shareholders. Exceptions to this rule are subject to limits, and to defined market risk tolerances and internal controls. Substantially all iron ore and aluminium sales are reflected at final prices at each reporting period. Final prices for copper concentrate, however, are normally determined between 30 and 180 days after delivery to our customer. At 31 December 2024, we had 186 million pounds of copper sales (31 December 2023: 92 million pounds) which were provisionally priced at US 397 cents per pound (2023: US 387 cents per pound). The final price of these sales will be determined during the first half of 2025. A 10% change in the price of copper realised on the provisionally priced sales, with all other factors held constant, would increase or reduce net earnings by US$46 million (2023: US$22 million). Power costs represent a significant portion of costs in our aluminium business and, therefore, we are exposed to fluctuations in power prices. To mitigate our exposure to changes in the relationship between aluminium prices and power prices, we have a number of electricity purchase contracts that are directly linked to the daily official LME cash ask price for high-grade aluminium (LME price) and to the US Midwest Transaction Premium (Midwest premium). In accordance with IFRS 9, we apply hedge accounting to 2 embedded derivatives within our power contracts. The embedded derivatives (nominal aluminium forward sales) have been designated as the hedging instrument. The forecast aluminium sales, priced using the LME price and the Midwest premium, represent the hedged item. The hedging ratio is 1:1, as the quantity of sales designated as being hedged matches the notional amount of the hedging instrument. The hedging instrument’s nominal amount, expressed in equivalent metric tonnes of aluminium, is derived from our expected electricity consumption under the power contracts as well as other relevant contract parameters. When we designate such embedded derivatives as the hedging instrument in a cash flow hedge, we recognise the effective portion of the change in the fair value of the hedging instrument in other comprehensive income, and it is accumulated in the cash flow hedge reserve. The amount that is recognised in other comprehensive income is limited to the lesser of the cumulative change in the fair value of the hedging instrument and the cumulative change in the fair value of the hedged item, in absolute terms. On realisation of the hedges, realised amounts are reclassified from reserves to consolidated sales revenue in the income statement. We recognise any ineffectiveness relating to the hedging relationship immediately in the income statement. Sources of ineffectiveness include differences in the timing of the cash flows between the hedged item and the hedging instrument, non-zero initial fair value of the hedging instrument, the existence of a cap on the Midwest premium in the hedging instrument and counterparty credit risk. We held the following nominal aluminium forward sales contracts embedded in the power contracts as at 31 December:
| 2024 | 2023
| Within 1 year | Between 1 and 5 years | Between 5 and 10 years | Total | Within 1 year | Between 1 and 5 years | Between 5 and 10 years | Total
Nominal amount (tonnes) | 73,117 | 286,455 | — | 359,572 | 72,617 | 289,801 | 66,268 | 428,686
Nominal amount (US$ millions) | 174 | 716 | — | 890 | 169 | 711 | 170 | 1,050
Average hedged rate (US$ per tonne) | 2,382 | 2,498 | — | 2,474 | 2,331 | 2,452 | 2,564 | 2,449
24 Financial instruments and risk management continued The impact on our financial statements of these hedging instruments and hedging items are:
| Aluminium embedded derivatives separated from the power contract (hedging instrument)(a) | Highly probable forecast aluminium sales (hedged item)
| Nominal US$m | Carrying amount US$m | Change in fair value in the period US$m | Cash flow hedge reserve(b) US$m | Change in fair value in the period US$m | Total hedging gains/(losses) recognised in reserves US$m | Hedge ineffective- ness in the period (losses)/ gains(c) US$m | Losses/ (gains) reclassified from reserves to income statement(d) US$m
2024 | 890 | (113) | 42 | (39) | (26) | 42 | – | 5
2023 | 1,050 | (174) | 3 | (91) | (16) | (1) | 4 | (2)
(a)Aluminium embedded derivatives (forward contracts and options) are contained within certain aluminium smelter electricity purchase contracts. The carrying amount of US$113 million (2023: US$174 million) is shown within “Other financial assets and liabilities”. (b)The difference between this amount and the total cash flow hedge reserve of the Group (shown in note 35) relates to our cash flow hedge on the sterling bond (refer to interest rate risk section). (c)Hedge ineffectiveness is included in “net operating costs” (within “raw materials, consumables, repairs and maintenance” - refer to note 7) in the income statement. (d)On realisation of the hedge, realised amounts are reclassified from reserves to consolidated sales revenue in the income statement. There was no cost of hedging recognised in 2024 (2023: no cost) relating to this hedging relationship. Sensitivity analysis Our commodity derivatives are impacted by changes in market prices. The table below summarises the impact that changes in aluminium market prices have on aluminium forward and option contracts embedded in power supply agreements outstanding at 31 December 2024. Any change in price will result in an offsetting change in our future earnings.
| Change in market prices | 2024 US$m | 2023 US$m
Effect on net earnings | +10% | (42) | (52)
(10)% | 69 | 67
Effect on equity | +10% | (68) | (81)
(10)% | 42 | 70
We exclude our “own use contracts” from this sensitivity analysis as they are outside the scope of IFRS 9. Our business units continue to hold these types of contracts to satisfy their expected purchase, sale or usage requirements.
| Impact of climate change on our business - renewable power purchase agreements in Queensland, New Zealand and the USA As part of the program to develop renewable energy solutions for our Queensland aluminium assets, in 2023 and 2024, we entered into long-term renewable 2.2GW PPAs to buy renewable electricity and associated carbon credits to be generated in the future from the Upper Calliope solar farm and the Bungaban wind farm. In 2024, our New Zealand Aluminium Smelters signed long term PPAs with electricity generators for a total of 572MW of hydro electricity. We also signed a PPA with the Monte Cristo wind farm in the US. These contracts are recorded as derivatives, with net unrealised losses of US$111 million recognised in the current year (2023: US$nil) and require complex derivative measurement over the contract’s term categorised under level 3 with significant unobservable inputs related to future energy prices. A 10% increase in forecast electricity prices over the remaining term of the contracts would result in a US$499 million increase in fair value and a 10% decrease in forecast electricity prices would result in a US$500 million decrease in fair value. |
(v) Foreign exchange risk The broad geographic spread of our sales and operations means that our earnings, cash flows and shareholders’ equity are influenced by a wide variety of currencies. The majority of our sales are denominated in USD. Our operating costs are influenced by the currencies of those countries where our mines and processing plants are located, and by those currencies in which we buy imported equipment and services. The USD, the Australian dollar (AUD) and the Canadian dollar (CAD) are the most important currencies influencing our costs. In any particular year, currency fluctuations may have a significant impact on our financial results. A strengthening of the USD against the currencies in which our costs are partly denominated has a positive effect on our net earnings. However, a strengthening of the USD reduces the value of non-USD denominated net assets, and therefore total equity. In most cases, our debt and other financial assets and liabilities, including intragroup balances, are held in the functional currency of the relevant subsidiary. There are instances where these balances are held in currencies other than the functional currency of the relevant subsidiary. This means we recognise exchange gains and losses in our income statement (except where they can be taken to equity) as these balances are translated into the functional currency of the relevant subsidiary. Our income statement also includes exchange gains and losses arising on USD net debt and intragroup balances. On consolidation, these balances are retranslated to our USD presentational currency and there is a corresponding and offsetting exchange difference recognised directly in the currency translation reserve. There is no impact on total equity. Under normal market conditions, we do not consider that active currency hedging of transactions would provide long-term benefits to shareholders. We review our exposure on a regular basis and will undertake hedging if deemed appropriate. We may deem currency protection measures appropriate in specific commercial circumstances. Capital expenditures and other significant financial items such as acquisitions, disposals, tax and dividend cash flows may be economically hedged. Sensitivity analysis The table below shows the estimated retranslation effect on financial assets and financial liabilities at 31 December, including intragroup balances, of a 10% strengthening in the closing exchange rate of the USD against significant currencies. We deem 10% to be the annual exchange rate movement that is reasonably probable (on an annual basis over the long run) for any of our significant currencies and therefore an appropriate representation for the sensitivity analysis.
| 2024 | 2023
Currency exposure | Closing exchange rate US cents | Effect on net earnings US$m | Impact directly on equity US$m | Closing exchange rate US cents | Effect on net earnings US$m | Impact directly on equity US$m
Australian dollar | 62 | 391 | (977) | 69 | 228 | (1,036)
Canadian dollar | 70 | (362) | – | 76 | (361) | –
We calculate sensitivities in relation to the functional currencies of our individual entities. We translate the impact of these on net earnings into USD at the exchange rates on which the sensitivities are based. The impact to net earnings associated with a 10% weakening of a particular currency, shown above, is broadly offset within equity through movements in the currency translation reserve and therefore generally has no impact on our net assets. The offsetting currency translation movement is not shown in the table above. The impact is expressed in terms of the effect on net earnings and equity, assuming that each exchange rate moves in isolation. The sensitivities are based on financial assets and financial liabilities held at 31 December, where balances are not denominated in the functional currency of the subsidiary or joint operation, and exclude financial assets and liabilities held by equity accounted units. These balances will not remain constant throughout 2025 and, therefore, this illustrative information should be used with caution. Valuation hierarchy of financial instruments carried at fair value on a recurring basis The table below shows the classifications of our financial instruments by valuation method in accordance with IFRS 13 “Fair Value Measurement” at 31 December. All instruments shown as being held at fair value have been classified as fair value through the profit and loss unless specifically footnoted.
|  | 2024 | 2023
|  | Held at fair value | Held at amortised cost US$m | Total US$m | Held at fair value | Held at amortised cost US$m | Total US$m
| Note | Level 1(a) US$m | Level 2(b) US$m | Level 3(c) US$m | Level 1(a) US$m | Level 2(b) US$m | Level 3(c) US$m
Assets |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents(d) | 22 | 4,893 | – | – | 3,602 | 8,495 | 2,722 | – | – | 6,951 | 9,673
Investments in equity shares and funds(e) | 23 | 96 | – | 183 | – | 279 | 85 | – | 96 | – | 181
Other investments, including loans(f) | 23 | 230 | – | 275 | 104 | 609 | 896 | – | 228 | 153 | 1,277
Trade and other financial receivables(g) | 17 | 15 | 1,379 | – | 1,948 | 3,342 | 9 | 1,383 | – | 1,851 | 3,243
Loans to equity accounted units | 23 | – | – | – | 509 | 509 | – | – | – | – | –
Forward contracts and option contracts: designated as hedges(h) | 23 | – | – | 27 | – | 27 | – | – | – | – | –
Forward, option and embedded derivatives contracts, not designated as hedges(h) | 23 | – | 42 | 19 | – | 61 | – | 28 | 26 | – | 54
Derivatives related to net debt(i) | 23 | – | 24 | – | – | 24 | – | 87 | – | – | 87
Liabilities |  |  |  |  |  |  |  |  |  |  |
Trade and other financial payables(j) | 18 | – | (144) | – | (6,392) | (6,536) | – | (47) | – | (6,277) | (6,324)
Forward, option and embedded derivatives contracts, designated as hedges(h) | 23 | – | – | (180) | – | (180) | – | – | (174) | – | (174)
Forward, option and embedded derivatives contracts, not designated as hedges(h) | 23 | – | (48) | (108) | – | (156) | – | (63) | (29) | – | (92)
Derivatives related to net debt(i) | 23 | – | (367) | – | – | (367) | – | (516) | – | – | (516)
Valuation is based on unadjusted quoted prices in active markets for identical financial instruments. (b)Valuation is based on inputs that are observable for the financial instruments, which include quoted prices for similar instruments or identical instruments in markets which are not considered to be active, or inputs, either directly or indirectly based on observable market data. 24 Financial instruments and risk management continued (c)Valuation is based on inputs that cannot be observed using market data (unobservable inputs). The change in valuation of our level 3 instruments for the year to 31 December is as follows.
| 2024 | 2023
Level 3 financial assets and liabilities | US$m | US$m
Opening balance | 147 | 131
Currency translation adjustments | (12) | (2)
Total realised gains/(losses) included in: |  |
– consolidated sales revenue | – | 12
– net operating costs | (32) | (18)
Total unrealised gains included in: |  |
– net operating costs | 22 | 43
Total unrealised gains/(losses) transferred into other comprehensive income through cash flow hedges | 34 | (1)
Additions to financial assets | 88 | 29
Disposals/maturity of financial instruments | (31) | (47)
Closing balance | 216 | 147
Net gains included in the income statement for assets and liabilities held at year end | 3 | 31
(d)Our Cash and cash equivalents of US$8,495 million (2023: US$9,673 million), includes US$4,893 million (2023: US$2,722 million) relating to money market funds which are treated as FVTPL under IFRS 9 with the fair value movements reported as finance income. (e)Investments in equity shares and funds include US$221 million (2023: US$157 million) of equity shares, not held for trading, where we have irrevocably elected to present fair value gains and losses on revaluation in other comprehensive income. The election is made at an individual investment level. (f)Other investments, including loans, covers cash deposits in rehabilitation funds, government bonds, managed investment funds and royalty receivables. (g)Trade receivables include provisionally priced invoices. The related revenue is initially based on forward market selling prices for the quotation periods stipulated in the contracts with changes between the provisional price and the final price recorded separately within “Other revenue”. The selling price can be measured reliably for the Group's products, as it operates in active and freely traded commodity markets. At 31 December 2024, US$1,374 million (2023: US$1,362 million) of provisionally priced receivables were recognised. (h)Level 3 derivatives mainly consist of derivatives embedded in electricity purchase contracts linked to the LME, midwest premium and billet premium with terms expiring between 2025 and 2036 (2023: 2025 and 2036). Derivatives related to renewable power purchase agreements are linked to forward electricity prices with terms expiring between 2026 and 2054. (i)Net debt derivatives include interest rate swaps and cross-currency swaps. As part of the International Swaps and Derivatives Association (ISDA) Fallbacks Protocol, on 1 July 2023 we completed the transition of our US LIBOR derivatives to SOFR on cessation of US LIBOR at 30 June 2023. There was no impact on our hedging arrangements after taking into account the IFRS 9 IBOR reform reliefs. (j)Trade and other financial payables comprise trade payables, other financial payables, accruals and amounts due to equity accounted units within note 18. There were no material transfers between level 1 and level 2, or between level 2 and level 3 in the current or prior year. Valuation techniques and inputs The techniques used to value our more significant fair value assets/(liabilities) categorised under level 2 and level 3 are summarised below:
| 2024 | 2023 |  |
Description | Fair value US$m | Fair value US$m | Valuation technique | Significant inputs
Level 2 |  |  |  |
Interest rate swaps | (156) | (163) | Discounted cash flows | –Applicable market quoted swap yield curves –Credit default spread
Cross-currency interest rate swaps | (187) | (266) | Discounted cash flows | –Applicable market quoted swap yield curves –Credit default spread –Market quoted FX rate
Provisionally priced receivables | 1,374 | 1,362 | Closely related listed product | –Applicable forward quoted metal price
Level 3 |  |  |  |
Renewable power purchase agreements | (111) | – | Discounted cash flows | –Forward electricity price –Energy volume
Derivatives embedded in electricity contracts | (132) | (186) | Option pricing model | –LME forward aluminium price –Midwest premium and billet premium
Royalty receivables | 252 | 214 | Discounted cash flows | –Forward commodity price –Mine production
Sensitivity analysis in respect of level 3 financial instruments For assets/(liabilities) classified under level 3, the effect of changing the significant unobservable inputs on carrying value has been calculated using a movement that we deem to be reasonably probable. Net derivative liabilities related to our renewable power purchase agreements have a fair value of US$111 million at 31 December 2024 (2023: nil). The fair value is calculated as the present value of the future contracted cash flows using risk-adjusted forecast prices including credit adjustments. A 10% increase in forecast electricity prices over the remaining term of the contracts would result in a US$499 million increase in fair value and a 10% decrease in forecast electricity prices would result in a US$500 million decrease in fair value. To value long-term aluminium embedded power derivatives, we use unobservable inputs when the term of the derivative extends beyond observable market prices. Changing the level 3 inputs to reasonably possible alternative assumptions does not change the fair value significantly, taking into account the expected remaining term of contracts for either reported period. The fair value of these derivatives is a net liability of US$132 million at 31 December 2024 (2023: US$186 million). 24 Financial instruments and risk management continued
| Impact of climate change on our business - coal royalty receivables At 31 December 2024, royalty receivables include amounts arising from our divested coal businesses with a carrying value of US$252 million (2023: US$214 million). These are classified as “Other investments, including loans” within note 23. The fair values are determined using level 3 unobservable inputs. These royalty receivables include US$96 million from forecast production beyond 2030. These have not been adjusted for potential changes in production rates that could occur due to climate change targets impacting the operator. The main unobservable input is the long-term coal price used over the life of these royalty receivables. A 15% increase in the coal spot price would result in a US$24 million increase (2023: US$64 million) in the carrying value. A 15% decrease in the coal spot price would result in a US$61 million decrease (2023: US$39 million) in the carrying value. We have used a 15% assumption to calculate our exposure as it represents the annual coal price movement that we deem to be reasonably probable (on an annual basis over the long run). |
Fair values disclosure of financial instruments The following table shows the carrying amounts and fair values of our borrowings including those which are not carried at an amount which approximates their fair value at 31 December. The fair values of some of our financial instruments approximate their carrying values because of their short maturity, or because they carry floating rates of interest.
| 2024 | 2023
| Carrying value US$m | Fair value US$m | Carrying value US$m | Fair value US$m
Listed bonds | 8,137 | 7,702 | 8,607 | 8,672
Oyu Tolgoi project finance | 3,852 | 4,103 | 3,850 | 4,090
Other | 453 | 416 | 544 | 494
Total borrowings (including overdrafts) | 12,442 | 12,221 | 13,001 | 13,256
Borrowings relating to listed bonds are categorised as level 1 in the fair value hierarchy while those relating to project finance drawn down by Oyu Tolgoi use a number of level 3 valuation inputs. Our remaining borrowings have a fair value measured by discounting estimated cash flows with an applicable market quoted yield, and are categorised as level 2 in the fair value hierarchy.

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