Incumbent crystalline-silicon solar cell technology — the commodity baseline that any new PV entrant (perovskite tandems, thin-film) must beat on $/W and bankability. In the learning loop it is a suppressed sourcing lane (crowded, commodity, incumbent-locked): the sourcing signal points away from pure silicon-PV plays and toward the tandem/materials edge tracked in Perovskite Silicon Tandem Wins New Build Utility Pv.
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