A refrigerated merchandiser including a case that defines a product display area. The case has an air inlet located adjacent the product display area, an air outlet to discharge an airflow into the product display area, and a passageway fluidly connecting the air inlet to the air outlet to direct a conditioned airflow from the air outlet across the product display area and generally toward the air inlet. The merchandiser also includes an electrical component and a power generation system that has a power generation device in communication with the airflow to convert kinetic energy of the airflow into electrical energy to power the electrical component based on movement of the airflow.