Invesco Solar Energy UCITS ETF (Guinness Atkinson Sustainable Energy) 

The fund invests, under normal conditions, at least 80% of its net assets in publicly-traded equity securities of sustainable energy companies (both U.S. and non-U.S.). It will invest in companies that the adviser considers to be “Sustainable Energy” companies, which are companies that, in the adviser’s view, generate, produce or provide alternative or renewable sources of energy, or that produce, generate, transport, or deliver energy or energy applications in a way that makes alternative or renewable energy more efficient or accessible or reduces the use of environmentally depletive energy resources.