This is called a momentum strategy, where you look to buy stocks that have been doing well in the expectation that they will continue to do well, it’s actually quite popular.
You don’t actually need to create your own, there are a couple of ETFs on Freetrade that follow this strategy.
IWFM - iShares MSCI World Momentum Factor
IUMF - iShares MSCI US Momentum Factor
If you check the holdings on them I think you’ll find the later is pretty much those green companies you are looking for.
Do bear in mind that just because these stocks have done well in the past doesn’t mean they will necessarily continue to do so.