customers that may decide to fully leverage cloud infrastructure offerings instead of managing their own. Competitors could also operate more successfully or form alliances to acquire significant market share.
Failure to compete successfully may materially adversely affect our financial condition, cash flows and results of operations.
Our business could be harmed by prolonged power outages or shortages, increased costs of energy or general lack of availability of electrical resources.
Our IBX data centers are susceptible to regional costs of power, power shortages, planned or unplanned power outages and limitations, especially internationally, on the availability of adequate power resources.
Power outages, including, but not limited to those relating to large storms, earthquakes, fires and tsunamis, could harm our customers and our business. We attempt to limit our exposure to system downtime by using backup generators and power supplies; however, we may not be able to limit our exposure entirely even with these protections in place. Some of our IBX data centers are located in leased buildings where, depending upon the lease requirements and number of tenants involved, we may or may not control some or all of the infrastructure including generators and fuel tanks. As a result, in the event of a power outage, we may be dependent upon the landlord, as well as the utility company, to restore the power.
In addition, global fluctuations in the price of power can increase the cost of energy, and although contractual price increase clauses exist in the majority of our customer agreements, we may not always choose to pass these increased costs on to our customers.
In each of our markets, we rely on third parties to provide a sufficient amount of power for current and future customers. At the same time, power and cooling requirements are growing on a per unit basis. As a result, some customers are consuming an increasing amount of power per cabinet. We generally do not control the amount of power our customers draw from their installed circuits. This means that we could face power limitations in our IBX data centers. This could have a negative impact on the effective available capacity of a given center and limit our ability to grow our business, which could have a negative impact on our financial performance, operating results and cash flows.
We may also have difficulty obtaining sufficient power capacity for potential expansion sites in new or existing markets. We may experience significant delays and substantial increased costs demanded by the utilities to provide the level of electrical service required by our current IBX data center designs.
On January 29, 2019, Pacific Gas and Electric Company ("PG&E"), the public utility that serves the area in which some of our facilities are located, filed for bankruptcy protection in the United States Bankruptcy Court for the Northern District of California, San Francisco ("Bankruptcy Court"). PG&E announced that it filed for bankruptcy to facilitate the resolution of liabilities in connection with the 2017 and 2018 Northern California wildfires. It is possible that, during its bankruptcy, PG&E may seek permission from the Bankruptcy Court to reject, i.e., breach, certain burdensome executory contracts, including high-priced power purchase agreements and other agreements under which PG&E procures electricity for distribution to customers like us. It is not certain that PG&E will be able to obtain such relief. Just before the bankruptcy filing, the Federal Energy Regulatory Commission ("FERC") ruled that its approval is required before PG&E may reject any FERC-jurisdictional wholesale power agreements. If PG&E seeks and is allowed to reject power agreements, it is difficult to predict the consequences of any such action for us but they could potentially include procuring electricity from more expensive sources, reducing the availability and reliability of electricity supplied to our facilities and relying on a larger percentage of electricity generated by fossil fuels, any of which could reduce supplies of electricity available to our operations or increase our costs of electricity.
The use of high power density equipment may limit our ability to fully utilize our older IBX data centers.
Some customers have increased their use of high power density equipment, such as blade servers, in our IBX data centers which has increased the demand for power on a per cabinet basis. Because many of our IBX data centers were built a number of years ago, the current demand for power may exceed the designed electrical capacity in these centers. As power, not space, is a limiting factor in many of our IBX data centers, our ability to fully utilize those IBX data centers may be impacted. The ability to increase the power capacity of an IBX data center, should we decide to, is dependent on several factors including, but not limited to, the local utility's ability to provide additional power; the length of time required to provide such power; and/or whether it is feasible to upgrade the electrical infrastructure of an IBX data center to deliver additional power to customers. Although we are currently designing and building to a higher power specification than that of many of our older IBX data centers, there is a risk that demand will continue to increase and our IBX data centers could become underutilized sooner than expected.
If our internal controls are found to be ineffective, our financial results or our stock price may be adversely affected.
Our most recent evaluation of our controls resulted in our conclusion that, as of December 31, 2018, in compliance with Section 404 of the Sarbanes-Oxley Act of 2002, our internal controls over financial reporting were effective. Our ability to manage