Most peer-reviewed studies reference the longevity of utility-scale solar energy photovoltaic modules using anecdotal information or industry standards.
Maybe this review of Jordan & Kurtz (2012) can help you : http://www.nrel.gov/docs/fy12osti/51664.pdf ; It is more about degradation rates along time (median ~-0.5%/year) depending on technology and year of installation.
Hi there,
Have a look at the following link here below.
Michigan University has just setup a new joint venture with Ford in battery research for EC's (Electric Cars) . This lab has a longstanding and good reputation in this type of research and also on measuring longevity as well the causes for battery degradation. Not the least important in EC manufacturing. The goal of Michigan is to increase the battery load density with a factor 5 on a volume basis and a factor 6 on a gravimetric basis. This would mean a breakthrough in EC's, as longs as battery degradation is not too high. Within 10 years a battery use, one should be able to keep 90% of the batteries load density. These are the objectives (for EC's). So that's why Ford is joining the Michigan team.
There ya go.
Frank
http://ns.umich.edu/new/multimedia/slideshows/21747-open-innovation-battery-lab-established-at-u-michigan-with-ford-medc
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