Group 1 - Clean energy stocks experienced a decline due to President Trump's spending legislation, which now includes a tax on wind and solar projects using Chinese components and accelerates the phase-out of tax credits [1][2] - Shares of major renewable energy companies such as NextEra Energy fell by 4%, while solar stocks like Array Technologies, Enphase, and Nextracker saw declines between 4% and 9% [1] - The Senate is voting on legislation that will eliminate key tax credits for solar and wind projects placed in service after 2027, which could lead to significant job losses and strategic harm to the U.S. economy, according to Tesla CEO Elon Musk [2] Group 2 - The new legislation compresses project timelines and introduces execution risks for developers, particularly those with large pipelines, who may struggle to meet the new deadlines [3] - Analysts indicate that the latest Senate draft has become more restrictive for most renewable players, moving towards a worst-case scenario for solar and wind industries [4] - The rooftop solar industry is seen as a relative winner from the bill, with companies like Sunrun and SolarEdge experiencing stock increases of over 7% and 3% respectively, as tax credits for leased rooftop systems remain in place through the end of 2027 [5] Group 3 - First Solar's stock rose by more than 7% as the legislation allows the manufacturer to claim credits for both components and final products [6]

Core Viewpoint - The recent passage of a tax and spending bill by the Republican-controlled House has led to a significant decline in solar stocks, particularly affecting residential rooftop solar providers like Sunrun, which saw a 40% drop in share price [1][5]. Group 1: Impact on Solar Stocks - Solar stocks, including Sunrun, NextEra Energy, and AES Corp., experienced sharp declines, with Sunrun down 40%, NextEra down 9.1%, and AES down 5.2% [1]. - The bill phases out most clean-energy tax credits for utility projects that begin more than 60 days after passage or are placed into service after 2028, which is more restrictive than previously anticipated [2][3]. Group 2: Specific Effects on Rooftop Solar - The bill has rolled back tax credits for leased rooftop solar systems, which could devastate the residential solar industry, as most installations are leased [4][5]. - Analysts have described the bill's impact on the rooftop solar industry as "disastrous," with one stating it could mark "the end" of the U.S. rooftop solar industry as it currently exists [5]. Group 3: Supply Chain Concerns - Sunrun imports about 50% of its solar panels, and the new tariffs and restrictions on foreign components could exacerbate challenges for the company, particularly given its reliance on Chinese supply chains [6]. Group 4: Legislative Status - The bill has only passed the House and will now move to the Senate, where there are reservations about the current provisions, indicating potential for further negotiations [8]. - Investors are advised to monitor developments in the Senate, as there is hope for reintroduction of some credits in the reconciled version of the bill [9].