A short squeeze certainly helped. Renewable energy stocks went crazy this week as meme investing returned, short squeezes happened, and there was maybe some light at the end of the tunnel for some of these companies. The biggest move was SunPower (SPWR -15.96%), which was up well over 100% early in the week, and as of noon ET on Friday is now up 43% for the week, according to data provided by S&P Global Market Intelligence. Direct competitor Sunnova Energy International (NOVA -7.08%) was also up as much as ...