The Invesco Global Clean Energy ETF offers global exposure to the clean energy sector, covering solar, wind, and hydroelectric power, making it a smart investment choice. PBD follows the WilderHill New Energy Global Innovation Index, providing diversified holdings in companies leading clean energy innovation across North America, Europe, and Asia. The fund's broad approach reduces risks associated with sector-specific downturns, outperforming other ETFs like PBW due to its global diversification.