Having read the link, I'd say it's not a complete myth, but something valid just for big centralised solar plants(!): the energy cost of concrete poured in them and labour of specialised staff. *Traitor*, n. A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.
* http://www.nrel.gov/docs/fy05osti/37322.pdf page 2: after reevaluation the current cost and use of concrete/aluminium adds 3-5 monthes to payback time
* http://jupiter.clarion.edu/~jpearce/Papers/netenergy.pdf there are difference in favour of roof mounted against centralized plants but they're small in time to payback
* http://www.csudh.edu/oliver/smt310-handouts/solarpan/pvpayback.htm Interesting data on solar cells reusing waste product of chip production, and solar cell only silicon being 10 times less energy intensive than chip silicon.
All in all I still think it's just a myth: payback time is greater for PV than wind but it's not significant.
And I wouldn't be surprised if the average payback times for installed PV drop below wind in the coming years.
