dollar amount. Because each of the Company's businesses are distinct entities and geographically diverse and because the obligations related to a single business are based on contingencies of varying types, the Company believes it is unlikely that it will be called upon to perform under several of such obligations at any one time.
          At December 31, 1999, the Company and its subsidiaries have future commitments to fund investments in its projects under construction and in development of 8175 million. Of this amount, $50 million in letters of credit under the Revolver have been issued to support a portion of these obligations. The remaining future capital commitments are expected to be funded by internally-generated cash flows and by external financings as may be necessary.

Market Risks

The Company generally attempts to hedge certain aspects of its projects against the effects of fluctuations in inflation, interest rates, energy prices, and in certain instances, exchange rates. Because of the complexity of hedging strategies and the diverse nature of AES's operations, its results, although significantly hedged, will likely be somewhat and in certain cases, such as Brazil, materially affected by fluctuations in these variables and such fluctuations may result in material improvement or deterioration of operating results. Results of operations would generally improve with higher oil and natural gas prices and with lower interest rates. Operating results are also sensitive to the difference between inflation and interest rates, and would generally improve when increases in inflation are higher than increases in interest rates.
          AES has generally structured the energy payments under its power generation sales contracts to adjust with similar price indices as do its contracts with the fuel suppliers for the corresponding power plants. In some cases a portion of revenues is associated with operations and maintenance costs, and as such is usually indexed to adjust with inflation.
          AES primarily consists of businesses with long- term contracts or retail sales concessions. While the contract-based portfolio is expected to be an effective hedge against future energy and electricity market price risks, an increasing proportion of AES's current and expected future revenues (particularly those related to certain portions of its generation businesses in Kazakhstan, the UK, Argentina, and the United States) are derived from businesses without significant long-term revenue contracts. In some of these businesses, AES has taken additional steps to improve their predictability, in the Company's opinion, by using other contractual hedging provisions such as financially settled electricity swaps or entering into fuel supply contracts that absorb a significant

portion of the variability in electricity sales prices. Despite these mitigating factors, increasing reliance on non-contract businesses in AES's portfolio subjects the Company's results of operations to the volatility and unpredictability of electricity prices in competitive markets.
          The hedging approaches and methodologies utilized by the Company are implemented through contractual provisions with fuel suppliers, international financial institutions and several of the Company's customers. As a result, their effectiveness is dependent, in part, on each counterparty's ability to perform in accordance with the provisions of the relevant contract. The Company has sought to reduce this credit risk in part by entering into contracts, where possible, with creditworthy organizations. In certain instances, where the Company determines that additional credit support is necessary, AES will seek to execute (either concurrently or subsequently) stand- by, guarantee or option agreements with creditworthy third parties. In particular, AES has executed and is the beneficiary of fuel purchase option agreements, corporate and governmental guarantees to support the obligations of local fuel suppliers in several locations and sovereign governmental guarantees supporting the electricity purchase obligation of govemment- owned power authorities, such as in the Dominican Republic and Pakistan.
          AES has also used a hedging strategy in an attempt to insulate each plant's financial performance, where appropriate, against the risk of fluctuations in interest rates. Depending on whether capacity pay- merits are fixed or vary with inflation, the Company generally attempts to hedge against interest rate fluctuations by arranging fixed rate or variable rate financing, respectively. In certain cases, the Company executes interest rate swap, cap and floor agreements to effectively fix or limit the interest rate exposure on the underlying variable rate financing. At December 31, 1999, the Company and its subsidiaries had approximately $4,820 million of fixed rate debt obligations. In addition, the Company had entered into interest rate swap agreements and forward interest rate swap agreements aggregating approximately $1,083 million at December 31, 1999, which the Company used to hedge its interest rate exposure on variable rate debt.
          Through its equity investments in foreign subsidiaries and affiliates, AES operates in jurisdictions dealing in currencies other than the Company's consolidated reporting currency, the U.S. Dollar. Such investments and advances were made to fund capital investment or acquisition requirements, to provide working capital, or to provide collateral for contingent obligations. Due primarily to the long-term nature of certain investments and advances, the Company accounts for any adjustments resulting from
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