Solar stocks tumbled on Monday after the fate of the Build Back Better plan, which includes billions of dollars for clean energy initiatives, was thrown into question as West Virginia Democratic Sen. Joe Manchin said he cannot vote in favor of the legislation. The Invesco Solar ETF slid as much as 6% amid heavy declines across the sector. Sunrun fell about 11.5% at its low point, while SunPower and Sunnova declined more than 7%. Enphase and SolarEdge both traded lower, too. However, by 11:20 a.m. on Wall Street the group had recovered some of those losses, with Sunrun last down more than 5%. But some Wall Street analysts believe the Build Back Better uncertainty was already reflected in solar shares, and pointed to several stocks that look especially attractive following the move lower. The bill included more than $500 billion for green projects , making it the single largest climate investment initiative in U.S. history. Provisions included tax credit extensions for renewable energy sources, a stand-alone energy storage credit and funding for nuclear and green hydrogen. "If I can't go home and explain it to the people [of] West Virginia, I can't vote for it. And I cannot vote to continue with this piece of legislation. I just can't. I've tried everything humanly possible.