His company uses panels from what he refers to as Tier-1 suppliers: Suntech ( STP), Trina Solar ( TSL), Yingli (YGE), Sharp and Kyocera.

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In response, Piper today reduced ratings on Canadian Solar (CSIQ), JA Solar (JASO), SunPower (SPWRA), Yingli Green Energy (YGE), Trina Solar (TSL) and Suntech (STP).

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As you can see from the chart above, the current price leaders are First Solar (NASD:FSLR), Renesola (NYSE:SOL), Trina Solar (NASD:TSL), Yingli Green Energy (NYSE:YGE), and Jinko Solar (NYSE:JKS).

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