Warranties for Battery Energy Storage Systems (BESS) provide mechanisms for buyers and investors to mitigate the technical and operational risks of battery projects, by transferring the risk of defects or performance issues to the manufacturer or the battery vendor. New battery technologies have valuable attributes that are well suited to the needs of developing countries. However, their limited track record can hamper its widespread deployment.
This report describes good practices for BESS warranty design including: tailoring BESS warranties to applications in developing countries (offering flexibility of operation); making terms and conditions of BESS warranties clear and easy to implement (clearly define realistic environmental and operational limits that can void the warranty under local conditions of temperature and humidity); and planning for the correct operation and maintenance of the BESS to ensure that the warranty remains valid.
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