There are several renewable energy ETFs. The three biggest by assets under management (AUM) in early 2024 were:Invesco Solar ETF (NYSEMKT: TAN) with $1.2 billion in AUM.First Trust NASDAQ Clean Edge Energy Index Fund (NASDAQ: QCLN): $727.8 million.Invesco WilderHill Clean Energy ETF (NYSEMKT: PBW): $333.3 million.