What happened Late Wednesday night, the U.S. Senate passed its Coronavirus Aid, Relief, and Economic Security (CARES) Act. In total, the stimulus bill promises some $2 trillion in funding to help taxpayers and companies struggling to survive under government-mandated measures to slow the spread of the coronavirus. Alternative energy stocks were quick to respond to the news today, with shares of General Electric (NYSE: GE), Clean Energy Fuels (NASDAQ: CLNE), and Vivint Solar (NYSE: VSLR) all soaring close to -- or more than -- 10% in early trading. By the time markets closed, GE stock remained up 7% and Clean Energy Fuels 9.3%. In contrast, Vivint Solar had given up all its gains, sinking to a 1.8% loss. Image source: Getty Images. So what Why the strong initial reaction, and why is enthusiasm for these three renewable energy stocks already beginning to wane? The first question is easiest to answer: Within the CARES Act is a mammoth $500 billion allotment of money to be given out in the form of loans and loan guarantees to industry, to tide companies over through the crisis. As three of the biggest names in renewable energy, GE (which has a $15 billion-a-year windmills business), Clean Energy, and Vivint all stand to benefit from this government largesse. Now what That's the good news, now here's the bad: Efforts by certain senators to add tax credits specifically benefiting the renewable energy industry to the CARES Act appear to have fallen flat, and the version of the bill published by the Senate after its passage last night makes no specific mention of wind power, solar power, or even clean renewable natural gas. Nowhere in the 880 pages, it seems, is there money being earmarked for the renewable energy industry. Perhaps this is the reason that Vivint Solar stock ended the day in negative territory -- and even GE and Clean Energy Fuels gave up some of their gains before the day was out. 10 stocks we like better than General ElectricWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and General Electric wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of March 18, 2020 Rich Smith has no position in any of the stocks mentioned. The Motley Fool recommends Clean Energy Fuels. The Motley Fool has a disclosure policy.Source