Our recent and future acquisitions may be subject to unknown or contingent liabilities for which we may have no or limited recourse against the sellers. Unknown or contingent liabilities might include liabilities for clean-up or remediation of environmental conditions, claims of customers, vendors or other persons dealing with the acquired entities or the former owners of acquired properties or businesses, tax liabilities, claims for indemnification by general partners, directors, officers and others indemnified by the former owners of acquired properties or businesses, and other liabilities whether incurred in the ordinary course of business or otherwise. In addition, the total amount of costs and expenses that we may incur with respect to liabilities associated with our acquisitions may exceed our expectations, which may adversely affect our business, financial condition and results of operations.Further, we have entered, and may in the future enter, into transactions with limited representations and warranties or with representations and warranties that do not survive the closing of such transactions, in which event we would have no or limited recourse against the sellers of such properties or businesses. While we usually require the sellers to indemnify us with respect to breaches of representations and warranties that survive, such indemnification is often limited and subject to various materiality thresholds, a significant deductible or an aggregate cap on losses. We may obtain insurance policies providing for coverage for breaches of certain representations and warranties in certain transactions, subject to certain exclusions and a deductible, however, there can be no assurance that we would be able to recover any amounts with respect to losses due to breaches of any such representations and warranties. As a result, there is no guarantee that we will recover any amounts with respect to losses due to breaches by the sellers of their representations and warranties. Finally, indemnification agreements between us and the sellers typically provide that the sellers will retain certain specified liabilities relating to the properties or businesses acquired by us. While the sellers are generally contractually obligated to pay all losses and other expenses relating to such retained liabilities, there can be no guarantee that such arrangements will not require us to incur losses or other expenses as well.Joint venture (JV) investments could be adversely affected by our lack of sole decision-making authority, our reliance on our JV partners' financial condition and disputes between us and our JV partners.We currently, and may in the future, co-invest with third parties through partnerships, joint ventures or other entities, acquiring non-controlling interests in or sharing responsibility for managing the affairs of a property or portfolio of properties, partnership, joint venture or other entity. In these events, we are not in a position to exercise sole decision-making authority regarding the properties, partnership, joint venture or other entity. Investments in partnerships, joint ventures, or other entities may, under certain circumstances, involve risks not present when a third party is not involved, including the possibility that partners might become bankrupt or fail to fund their share of required capital contributions. Partners may have economic, tax or other business interests or goals which are inconsistent with our business interests or goals, and may be in a position to take actions contrary to our policies or objectives. Our joint venture partners may take actions that are not within our control, which would require us to dispose of the joint venture asset or transfer it to a taxable REIT subsidiary in order for Digital Realty Trust, Inc. to maintain its status as a REIT. Such investments may also lead to impasses, for example, as to whether to sell a property, because neither we nor our partner would have full control over the partnership or joint venture. Disputes between us and our partners may result in litigation or arbitration that would increase our expenses and prevent our management from focusing their time and effort on our day-to-day business. Consequently, actions by or disputes with our partners may subject properties owned by the partnership or joint venture to additional risk. In addition, we may in certain circumstances be liable for the actions of our third-party partners. Each of these factors may result in returns on these investments being less than we expect or in losses and our financial and operating results may be adversely affected. In addition, we cannot assure you that we will be able to close joint ventures, on the anticipated schedule or at all. Failure to complete any such joint venture could have a negative impact on our business and the trading price of our common stock. Over the past few years, and particularly during the last 12 months, we have completed a number of new joint ventures, including our first development joint ventures, and such investments may increase the risks described herein.
Any delays or unexpected costs in the development of our existing space and developable land and new properties acquired for development may delay and harm our growth prospects, future operating results and financial condition.At December 31, 2023, we had approximately 8.5 million square feet of space under active development and approximately 4.1 million square feet of space held for future development. We have built and may continue to build out a large portion of this space on a speculative basis at significant cost. Our successful development of these projects is subject to many risks, including those associated with:- delays in construction, or changes to the plans or specifications;- budget overruns, increased prices for raw materials or building supplies, or lack of availability and/or increased costs for specialized data center components, including long lead time items such as generators;- construction site accidents and other casualties;- financing availability, including our ability to obtain construction financing and permanent financing, or increases in interest rates or credit spreads;- labor availability, costs, disputes and work stoppages with contractors, subcontractors or others that are constructing the project;- failure of contractors to perform on a timely basis or at all, or other misconduct on the part of contractors;- access to sufficient power and related costs of providing such power to our customers;- environmental issues;- supply chain constraints;- fire, flooding, earthquakes and other natural disasters;- pandemics;- geological, construction, excavation and equipment problems; and- delays or denials of entitlements or permits, including zoning and related permits, or other delays resulting from requirements of public agencies and utility companies.In addition, while we intend to develop data centers primarily in metropolitan areas we are familiar with, we may in the future develop data centers in new geographic regions where we expect the development to result in favorable risk-adjusted returns on our investment. We may not possess the same level of familiarity with the development of data centers in other metropolitan areas, which could adversely affect our ability to develop such data centers successfully or at all or to achieve expected performance.?Development activities, regardless of whether they are ultimately successful, also typically require a substantial portion of our management's time and attention. This may distract our management from focusing on other operational activities of our business. If we are unable to complete development projects successfully, our business may be adversely affected.Many of our costs, such as operating and general and administrative expenses, interest expense and real estate acquisition and construction costs, could be adversely impacted by periods of heightened inflation. ?Over the past year, the consumer price index has increased substantially year over year. Federal policies to stimulate the economy during the pandemic and more recent global events, such as the rising price of oil and the conflict between Russia and Ukraine, may have exacerbated, and may continue to exacerbate, inflation and increases in the consumer price index.
A sustained or further increase in inflation could have an adverse impact on our operating expenses incurred in connection with, among others, the property-related contracted services such as repairs and maintenance, utilities, security and insurance. With regard to utilities expense, which is our largest expense category, the vast majority of the expense is passed directly through to our customers which significantly mitigates our exposure to increases in power costs. For our other operating expenses, we expect to recover some increases from our customers through our existing lease structures, annual rent escalations or from the resetting of rents from our renewal and re-leasing activities. As a result, we do not believe that inflation would result in a significant adverse effect on our net operating income and operating cash flows at the property level. However, there can be no assurance that the impact of inflation will be adequately offset by some of our annual rent escalations contained in our leases, and it is possible that the resetting of rents from our renewal and re-leasing activities would not fully offset the impact of higher operating expenses resulting from inflationary pressure. As a result, during inflationary periods in which the inflation rate exceeds the annual rent escalation percentages within our customer contracts, we may not adequately mitigate the impact of inflation, which may adversely affect our business, financial condition, results of operations, and cash flows.Our general and administrative expenses consist primarily of compensation costs and professional service fees. Rising inflation rates may require us to provide compensation increases beyond historical annual increases, which may unexpectedly or significantly increase our compensation costs. Similarly, professional service fees are also subject to the impact of inflation and expected to increase proportionately with increasing market prices for such services. Consequently, inflation may increase our general and administrative expenses over time and may adversely impact our results of operations and cash flows.Additionally, inflationary pricing may have a negative effect on the construction costs necessary to complete our development projects, including, but not limited to, costs of construction equipment and materials, labor and services from third-party contractors and suppliers. We rely on a number of third-party suppliers and contractors to supply raw materials, skilled labor and services for our construction projects. Certain increases in the costs of construction equipment and materials can often be managed in our development projects through either general budget contingencies built into our overall construction cost estimates for each of our projects or guaranteed maximum price construction contracts, which stipulate a maximum price for certain construction costs and shift inflation risk to our construction general contractors. However, no assurance can be given that our budget contingencies would accurately account for potential construction cost increases given the current severity of inflation and variety of contributing factors or that our general contractors would be able to absorb such increases in costs and complete our construction projects timely, within budget, or at all. Higher construction costs could adversely impact our investments in real estate assets and expected yields on our development projects, which may adversely impact our returns on our investments. As a result, our business, financial condition, results of operations, cash flows, liquidity and ability to satisfy our debt service obligations and to pay dividends and distributions to security holders could be adversely affected over time.We have substantial debt and face risks associated with the use of debt to fund our business activities, including refinancing and interest rate risks.Our total consolidated indebtedness at December 31, 2023 was approximately $17.5 billion, and we may incur significant additional debt to finance future acquisition, investment and development activities. We have a Global Revolving Credit Facility and the Yen Revolving Credit Facility, which provide for borrowings of up to $3.9 billion (including approximately $0.2 billion available to be drawn on the Yen Revolving Credit Facility) based on currency commitments and foreign exchange rates as of December 31, 2023. We have the ability from time to time to increase the size of the Global Revolving Credit Facility by up to $750 million, subject to receipt of lender commitments and other conditions precedent. At December 31, 2023, approximately $1.8 billion was available under this facility, net of outstanding letters of credit. As of February 21, 2024, we had approximately $1.9 billion available under the Global Revolving Credit Facility, net of outstanding letters of credit.
Our substantial indebtedness currently requires us to dedicate a significant portion of our cash flow from operations to debt service payments, which reduces the availability of our cash flow to fund working capital, capital expenditures, expansion efforts, distributions and other general corporate purposes. Additionally, it could: make it more difficult for us to satisfy our obligations with respect to our indebtedness; limit our ability in the future to undertake refinancing of our debt or obtain financing for expenditures, acquisitions, development or other general corporate purposes on terms and conditions acceptable to us, if at all; or affect adversely our ability to compete effectively or operate successfully under adverse economic conditions.In addition, we may violate restrictive covenants or fail to maintain financial ratios specified in our loan documents, which would entitle the lenders to accelerate our debt obligations, and our secured lenders or mortgagees may foreclose on our properties or our interests in the entities that own the properties that secure their loans and receive an assignment of rents and leases. Our default under any one of our loans could result in a cross-default on other indebtedness. A foreclosure on one or more of our properties could adversely affect our access to capital, financial condition, results of operations, cash flow and cash available for distribution. Further, foreclosures could create taxable income without accompanying cash proceeds, a circumstance which could hinder Digital Realty Trust, Inc.'s ability to meet the REIT distribution requirements imposed by the Internal Revenue Code of 1986, as amended, or the Code.Additional risks related to our indebtedness include the following:We may be unable to refinance our indebtedness at maturity or the refinancing terms may be less favorable than the terms of our original indebtedness. It is likely that we will need to refinance at least a portion of our outstanding debt as it matures. If we are unable to refinance or extend principal payments due at maturity or pay them with proceeds of other capital transactions, then our cash flow may not be sufficient in all years to repay all such maturing debt and to pay distributions. Further, if prevailing interest rates or other factors at the time of refinancing, such as the reluctance of lenders to make commercial real estate loans, result in higher interest rates upon refinancing, then the interest expense relating to that refinanced indebtedness would increase.Fluctuations in interest rates could materially affect our financial results and may increase the risk our counterparty defaults on our interest rate hedges. Because a significant portion of our debt, including debt incurred under our Global Revolving Credit Facilities, bears interest at variable rates, increases in interest rates could materially increase our interest expense. If the United States Federal Reserve and other central banks continue to increase short-term interest rates, this could have a significant upward impact on the interest rates that apply to our variable rate debt. Potential future increases in interest rates and credit spreads may increase our interest expense and therefore negatively affect our financial condition and results of operations, and reduce our access to capital markets. We have entered into interest rate swap agreements and cross currency swap agreements. Our derivative transactions expose us to risk of financial loss if a counterparty fails to perform under a derivative contract. Disruptions in the financial markets could lead to sudden decreases in a counterparty's liquidity, which could make them unable to perform under the terms of their derivative contract and we may not be able to realize the benefit of the derivative contract.Adverse changes in our Company's credit ratings could negatively affect our financing activity. The credit ratings of our senior unsecured long-term debt and Digital Realty Trust, Inc.'s preferred stock are based on our Company's operating performance, liquidity and leverage ratios, overall financial position and other factors employed by the credit rating agencies in their rating analyses of our Company. Our Company's credit ratings can affect the amount of capital we can access, as well as the terms and pricing of any debt we may incur. We cannot assure you that we will be able to maintain our current credit ratings, and in the event our current credit ratings are downgraded, we would likely incur higher borrowing costs and may encounter difficulty in obtaining additional financing. Also, a downgrade in our credit ratings may trigger additional payments or other negative consequences under our current and future credit facilities and debt instruments. For example, if the credit ratings of our senior unsecured long-term debt are downgraded to below investment grade levels, we may not be able to obtain or maintain extensions on certain of our existing debt. Adverse changes in our credit ratings could negatively impact our refinancing and other capital market activities, our ability to manage our debt maturities, our future growth, our financial condition, the market price of Digital Realty Trust, Inc.'s stock, and our development and acquisition activity.
Our Global Revolving Credit Facilities and senior notes restrict our ability to engage in some business activities. Our Global Revolving Credit Facilities contain negative covenants and other financial and operating covenants that, among other things, restrict our ability to: incur additional indebtedness; make certain investments; merge with another company; and create, incur or assume liens; and require us to maintain financial coverage ratios, including with respect to unencumbered assets.In addition, the Global Revolving Credit Facilities restrict Digital Realty Trust, Inc. from making distributions to its stockholders, or redeeming or otherwise repurchasing shares of its capital stock, after the occurrence and during the continuance of an event of default, except in limited circumstances including as necessary to enable Digital Realty Trust, Inc. to maintain its qualification as a REIT and to avoid the payment of income or excise tax.In addition, our unsecured senior notes are governed by indentures, which contain various restrictive covenants, including limitations on our ability to incur indebtedness and requirements to maintain a pool of unencumbered assets. These restrictions, and the restrictions in our Global Revolving Credit Facilities, could cause us to default on our senior notes or Global Revolving Credit Facilities, as applicable, or negatively affect our operations or our ability to pay dividends to Digital Realty Trust, Inc.'s stockholders or distributions to Digital Realty Trust, L.P.'s unitholders, which could have a material adverse effect on the market value of Digital Realty Trust, Inc.'s common stock and preferred stock.Failure to hedge effectively against interest rate changes may adversely affect results of operations. We seek to manage our exposure to interest rate volatility by issuing fixed rate debt instruments and by using interest rate hedging arrangements, such as interest rate cap, forward or swap lock agreements. These agreements involve risks, such as the risk that counterparties may fail to honor their obligations under these arrangements, that these arrangements may not be effective in reducing our exposure to interest rate changes and that a court could rule that such an agreement is not legally enforceable. Our policy is to use these derivatives only to hedge interest rate risks related to our borrowings, not for speculative or trading purposes, and to enter into contracts only with major financial institutions based on their credit ratings and other factors. However, we may choose to change this policy in the future. Approximately 85% of our total indebtedness as of December 31, 2023 was subject to fixed interest rates or variable rates subject to interest rate swaps. We do not currently hedge our Global Revolving Credit Facilities and as our borrowings under our Global Revolving Credit Facilities increase, our percentage of indebtedness not subject to fixed rates and our exposure to interest rates may increase. Hedging may reduce the overall returns on our investments. Failure to hedge effectively against interest rate changes may materially adversely affect our results of operations.Our growth depends on external sources of capital which are outside of our control.In order for Digital Realty Trust, Inc. to maintain its qualification as a REIT, it is required under the Code to annually distribute at least 90% of its REIT taxable income determined without regard to the dividends paid deduction and excluding any net capital gain. In addition, Digital Realty Trust, Inc. will be subject to federal and state corporate income taxes to the extent that it distributes less than 100% of its REIT taxable income, including any net capital gains. Digital Realty Trust, L.P. is required to make distributions to Digital Realty Trust, Inc. that will enable the latter to satisfy this distribution requirement and avoid income and excise tax liability. Because of these distribution requirements, we may not be able to fund future capital needs, including any necessary acquisition or development financing, from operating cash flow. Consequently, we may rely on third-party sources to fund our capital needs.Our access to third-party sources of capital depends on a number of factors, including general market conditions, the market's perception of our business prospects and growth potential, our current and expected future earnings, funds from operations, our cash flow and cash distributions, and the market price per share of Digital Realty Trust, Inc.'s common stock. We cannot assure you that we will be able to obtain equity or debt financing at all or on terms favorable or acceptable to us. Any additional debt we incur will increase our leverage. Further, equity markets have experienced high volatility recently and we cannot assure you that we will be able to raise capital through the sale of equity securities at all or on favorable terms. Sales of equity on unfavorable terms could result in substantial dilution to Digital Realty Trust, Inc.'s common stockholders and Digital Realty Trust, L.P.'s unitholders. In addition, we may be forced to dispose of one or more of our properties, possibly on disadvantageous terms.If we cannot obtain capital from third-party sources, we may not be able to acquire or develop data centers when strategic opportunities exist, satisfy our debt service obligations, pay cash dividends to Digital Realty Trust, Inc.'s stockholders or make distributions to Digital Realty Trust, L.P.'s unitholders.