The passage of Trump's "Big Beautiful" tax bill has sparked immediate gains in solar stocks. The bill eliminated a proposed tax on renewable energy projects, causing Sunrun to increase by 10%, SolarEdge to nearly 10%, and Enphase to rise 4%. Traders took profits from recent rallies, while Palantir fell 4%. With the Federal Reserve signaling potential rate cuts, investors may be shifting billions from tech to clean energy. This development suggests solar could become the next major investment trend.