A refrigerated merchandiser including a case defining a product display area to support product and a refrigeration system at least partially coupled to the case to condition the product display area. The case includes case structure at least partially exposed to the product display area. The merchandiser also includes a heat guide that is in communication with cold air within the product display area, and a heat source that is coupled to the case structure within the product display area. The heat source is further coupled to the heat guide by a thermal recovery device. The heat guide forms a bridge between the thermal recovery device and the cold air in the product display area such that power is generated based on a temperature difference across the thermal recovery device.