Solar panel minerals

From the change wiki

To make solar panels, you need a variety of metals, some of which are scarce. This isn't a major problem right now, but that's just because solar power is still barely than 1% of the world's energy supply. It would be an issue if solar were to scale up enough to make an actual difference when it comes to replacing fossil fuels.

Case studies

This section has not been filled in yet.

Solutions