efficiency standards. Climate change also may affect our business by increasing the cost of (or making unavailable) property insurance on terms we find acceptable in areas most vulnerable to such events, increasing operating costs at our hotels, such as the cost of water or energy, and requiring us to expend funds as we seek to mitigate, repair and protect our hotels against such risks.
We are subject to the risks associated with the transitional effects of climate change to a low carbon scenario, which can include increased regulation for building efficiency and equipment specifications, increased regulations or investor requirements for Environmental and Social disclosures and increased costs to manage the shift in consumer preferences. In an effort to mitigate the impact of climate change, our hotels could become subject to increased governmental regulations mandating energy efficiency standards, the usage of sustainable energy sources and updated equipment specifications which may require additional capital investments or increased operating costs. Climate change may also affect our business by the shift in consumer preferences for sustainable travel. Our hotels may be subject to additional costs to manage consumer expectations for sustainable buildings and hotel operations.
There can be no assurance that climate change will not have a material adverse effect on our hotels, operating results, or cash flows.
A significant portion of our hotels are geographically concentrated and, accordingly, we could be disproportionately harmed by economic downturns or natural disasters in these areas of the country.
As of December 31, 2020, four of the 17 Hotels are located in California, which is the largest concentration of our hotels in any state, representing 30% of our rooms and 36% of the revenue generated by the 17 Hotels during 2020. In addition, the following other areas include concentrations of our hotels as of December 31, 2020: Florida, where two of the 17 Hotels represent 11% of our rooms and 15% of the revenue generated by the 17 Hotels during 2020; Hawaii, where one of the 17 Hotels represents 6% of our rooms and 15% of the revenue generated by the 17 Hotels during 2020; Illinois, where three of the 17 Hotels represent 13% of our rooms and 5% of the revenue generated by the 17 Hotels during 2020; and Massachusetts, where two of the 17 Hotels represent 16% of our rooms and 13% of the revenue generated by the 17 Hotels during 2020. The concentration of our hotels in California, Florida, Hawaii, Illinois and Massachusetts exposes our business to economic conditions, competition and real and personal property tax rates unique to these locales. In addition, natural disasters in these locales would disproportionately affect our hotel portfolio. The economies and tourism industries in these locales, in comparison to other parts of the country, are negatively affected to a greater extent by changes and downturns in certain industries, including the entertainment, high technology, financial, and government industries. It is also possible that because of our California, Florida, Hawaii, Illinois and Massachusetts concentrations, a change in laws applicable to such hotels and the lodging industry may have a greater impact on us than a change in comparable laws in another geographical area in which we have hotels. Adverse developments in these locales could harm our revenue or increase our operating expenses.
Uninsured and underinsured losses could harm our financial condition, results of operations and ability to make distributions to our stockholders.
Various types of litigation losses and catastrophic losses, such as losses due to wars, terrorist acts, earthquakes, floods, hurricanes, pollution, climate change or other environmental matters, generally are either uninsurable or not economically insurable, or may be subject to insurance coverage limitations, such as large deductibles or co-payments. Should an uninsured loss or a loss in excess of insured limits occur, we could lose all or a portion of the capital we have invested in a hotel, as well as the anticipated future revenue from the hotel. In that event, we might nevertheless remain obligated for any notes payable or other financial obligations related to the property, in addition to obligations to our ground lessors, franchisors and managers.
Of the 17 Hotels, four are located in California, which has been historically at greater risk to certain acts of nature (such as fires, earthquakes, and mudslides) than other states. In addition, a total of five hotels are located in Florida, Hawaii, and Louisiana, which each have an increased potential to experience hurricanes. In the event of a catastrophic loss, our insurance coverage may not be sufficient to cover the full current market value or replacement cost of our lost investment. Inflation, changes in building codes and ordinances, environmental considerations and other factors might also keep us from using insurance proceeds to replace or renovate a hotel after it has been damaged or destroyed. Under those circumstances, the insurance proceeds we receive might be inadequate to restore our economic position on the damaged or destroyed hotel. Acts of nature that do not result in physical loss at our hotels could diminish the desirability of our hotel’s location, resulting in less demand by travelers.
Property and casualty insurance, including coverage for terrorism, can be difficult or expensive to obtain. When our current insurance policies expire, we may encounter difficulty in obtaining or renewing property or casualty insurance on our hotels at the same levels of coverage and under similar terms. Such insurance may be more limited and for some catastrophic risks (e.g., earthquake, fire, flood and terrorism) may not be generally available at current levels. Even if we are able to renew our policies or to obtain new policies at levels and with limitations consistent with our current policies, we cannot be sure that we will be able to obtain such insurance at premium rates that are commercially reasonable. If we are unable to obtain adequate insurance on our hotels for certain risks, it could cause us to be in default under specific covenants on certain of our indebtedness or other contractual commitments we have to our ground lessors, franchisors and managers which require us to maintain adequate insurance on our