Battery storage power stations use rechargeable batteries for load-leveling (storing electric energy at times of low demand for use during peak periods) and for renewable energy uses (such as storing power generated from photovoltaic arrays during the day to be used at night).
Definition of dray. : a vehicle used to haul goods; especially : a strong cart or wagon without sides.
The word drayage dates back several hundred years. It is derived form the word dray, or draw; to describe the action of horses pulling a cart or wagon. These dray horses were hitched up to wagons and would be used to haul cargo that arrived by ship. Before containerization, merchandise was lifted up out of the ship using a cargo net and swung over the side and placed onto a wagon without a top, and the horse would dray the wagon away. Today, trucks have replaced horses and cargo nets have evolved into containers.