Great question. I would say it primarily depends on how much capital you have to invest. For the most part, the renewable energy industry has been dominated by large investors that are able to invest tens to hundreds of millions of dollars into massive projects. This meant that, as a retail investor, you would not be able to participate unless you bought shares in a large publicly-traded corporation that then pooled your capital along with others to invest in these projects. The problem with that is that a lot of these publicly-traded companies are not solely focused on renewables. A fair amount of them also invest in fossil fuel generation and other infrastructure projects that actually contribute to the climate change problem rather than fighting it. Even worse, they may change their business strategy and decide to sell off their renewable energy assets, which would be completely out of your control as a retail shareholder. For the average investor, that leaves green bonds, which provide more transparency and comfort that the money is being used for the purposes you want it to then you would ever be able to get with other investments.