December 10, 2008 ndash; Analyst Comments ndash; Cowen amp; Companyrsquo;s Robert Stone weighed in this morning on several solar companies including Hoku Scientific (Nasdaq:HOKU), Evergreen Solar (Nasdaq:ESLR) and Ascent Solar Technologies (Nasdaq:ASTI), downgrading each of the stocks to NEUTRAL. Here are his takeaways: Hoku (reduced from OUTPERFORM to NEUTRAL) middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Prepayment delays and potential difficulty obtaining additional financing in 2009 may slow startup of poly plant; middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Cut FY09, FY10 and FY11 revenue and earnings estimates based on slower ramp, lower ASPs and reduced GMs; Evergreen Solar (reduced from OUTPERFORM to NEUTRAL) middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Uncertainty in the PV market increases Evergreenrsquo;s execution risk in its capacity ramps; middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Concerns about increased expenses in the current environment which Evergreen will need to launch its string-ribbon technology; middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Further capitalization in 2009 is going to be tough; middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Cut FY09 modeling lower ASPs and reduced GMs; Ascent Solar (reduced from OUTPERFORM to NEUTRAL) middot;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Weaker Euro ...