Solar stocks are shining in the early innings of 2023. Just look at the Invesco Solar ETF (TAN), which is higher by more than 7% since the start of the year. TAN Annual NAV Total ReturnsData as of 3 31 23 As part of its thematic rollout this side of the pond, Global X also launched a solar ETF, the $6m Global X Solar UCITS ETF (RAYZ), in February.