"iShares Global Clean Energy UCITS ETF USD (Dist)" is an exchange-traded investment fund (ETF). It refers to the S&P Global Clean Energy Index. This index reflects the development of world wide stocks . The ETF replicates its index using full physical replication, so it contains all the securities of its reference index. The ETF's earnings (dividends) are distributed to the investors. The fund company iShares claims a total expense ratio (TER) of 0.65% per year. The yearly average divergence from the index performance (Tracking Difference) since 2008 was -0.33% per year. Therefore, the ETF was significantly less expensive than the TER suggests and even exceeded the index performance. However, the yearly tracking differences had strong variations, so their average value is not a very reliable measure.