solar stocks plummeted after a Senate proposal to phase out tax credits by 2028, affecting major companies and reflecting challenges in the renewable sector. Solar inverter maker Enphase Energy and solar panel manufacturer First Solar slid 27. 2% and. . Shares of the maker of solar-power components draw a downgrade and lead the S&P 500's decliners after Trump's executive order enforces a phaseout of tax credits Enphase Energy Inc. It does, however, keep incentives for nuclear, hydropower and geothermal energy for longer. Solar panels on the Seat Cupra SA plant in Martorell, Spain, on Thursday. . Solar stocks experienced a dramatic selloff on Tuesday, June 17, 2025, as the U.
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