It is not economically feasible to supplement natural air drying of high-moisture shelled corn by adding heat (solar and otherwise). In some cases, that drying method speeds product deterioration. A simulatiton analysis of the west central Great Plains determined that benefits from adding solar heat to batch-in-bin and layer~in-bin grain drying. methods failed to offset the solar heat installation costs and product deterioration losses. Findings also suggest that high-speed, high temperature drying is necessary to avoid field losses and to ensure marketable corn of high quality.