Probably all of them. Germany is really not ideal for solar in terms of weather, yet they are installed by many people all over the place, even today. With the cheaper prices things will get even better.

Germany is already over 50% renewable. :)

https://www.destatis.de/EN/Themes/Economic-Sectors-Enterprises/Energy/Production/Tables/gross-electricity-production.html

I mean more money would solve the IP issue.

Step 1: Get more money Step 2: Buy additional dedicated IPs for the casino Step 3: Profit from the profits of a casino.