As you might know, the utility-scale installations are usually ground-mount, MW-scale systems built on abundant spaces, and is a financially sensitive market segment that rewards financial strength and low-cost products.
So the tier 1 list is dominated by large conglomerates, such as Jinko, LONGi, First Solar, that are financially strong and proficient in offering low power density solar panels.
Unlike utility applications, rooftop commercial and residential solar projects situate on limited roof areas and don’t have dedicated solar maintenance teams.