I believe you uncheck “Hide extensions for known file types”

Oh this looks nice! What did you use to cut the mortise & tenons?

Those are normal crystalline panels, not tandem

Are there any perovskite/monocrystalline cells in commercial production yet anywhere in the world? I keep seeing a lot of buzz for adding a perovskite layer to crystalline silicon cells, but I’m not seeing any in actual production. Maybe I’ve missed something?

That’s because the leaders of Norway, Sweden, Finland, Belarus, Belgium, Switzerland, Austria, etc don’t speak any languages