Lenders typically require that insurance be taken out to protect against certain risks of force majeure. The insurance will provide funds to restore the project in the event of force majeure, thereby ensuring that the project remains a viable operating entity. Insurance protection is especially important when the ability of the obligated parties to repay project debt on an accelerated basis is questionable. To the extent available, the project sponsors normally purchase commercial insurance to cover the cost of damage caused by natural disasters. They may also secure business interruption insurance to cover certain other risks. In addition, lenders may require the sponsors to agree contractually to provide additional funds to the project to the extent insurance proceeds are insufficient to restore operations.