[innocentfelon]

CIGS, like CdTe, has always been limited by material economics. As demand goes up, the world economy’s limited production of these exotic byproducts can’t keep up.

Believe it or don’t, the last time I crunched the numbers, it was the Selenium in CIGS that they’re having the most trouble unlocking more of.

[ChuckMcM]

That is surprising, the early 2000's there was a huge uproar over all of the selenium runoff going into the San Francisco bay. At the time I wondered if there was an economic use for selenium and if extracting it from water was economically feasible.