# The First US Perovskite Factory Is Open. Nobody Knows What to Do With the Panels When They Die. - Date: 2026-04-20 - Category: Space & Aerospace Tandem PVs Fremont factory is now producing perovskite-silicon tandem solar panels — 30% efficient, versus 22% for standard silicon. They contain lead, have no recycling infrastructure, and face no US disposal regulations. Thats the problem nobody has solved. ---