The two major investments can be seen in wind and solar energy, renewable technologies. The sustainable energy investment from the last 10 years shows a linear rise in the investment for wind energy as compared to solar energy.
As we can observe a smooth amount of investment in wind energy but the amount invested is more in the case of solar energy technologies.
The annual growth rate shows the comparison between solar and wind energy technology, the investment percentage in the wind has been in smaller positive percentage whereas in the solar sector it is up and down.
In my opinion, the global investment is somehow attracting the solar sector more in terms of larger amount but there is a gradual increase in wind. Moreover, if you compare both the technologies then the wind is much more dependent on the right position and also related to space and area as compared to solar energy.