Solar panel minerals
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. discussion TODO: cite the source, and also explain the difference between "electricity" and "energy". If you've seen higher percentages for solar, it's because they were only talking about the "percent of total electricity". 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
- Discussion: Solar panels made of abundant materials