2026-02-27 Cost optimization of PV mounting systems plays a vital role in overall solar power plant cost reduction. This article analyzes material selection (galvanized steel, aluminum alloy, stainless steel), compares economic and technical performance, and explains how prefabricated solar racking installation reduces labor, shortens construction periods, and lowers BOS cost. A practical combined strategy is provided to help developers and EPCs maximize cost savings and project ROI.