A REC represents all the environmental attributes corresponding to one megawatt-hour of energy generated from renewable energy resources. The Fall 2017 Wind and Solar RFP seeks to procure 200,000 RECs from utility-scale solar projects or brownfield site photovoltaic projects. This quantity represents an annual quantity of RECs to be delivered in aggregate to all three (3) Companies (Ameren Illinois Company, Commonwealth Edison Company, and MidAmerican Energy Company).