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.
Wray and its variant forms, found mainly as Wra and Wroe, is a locational surname, deriving from any of the places in Lancashire and Cumberland named with the Old Norse vra, nook, corner, recess, used in placenames to denote a remote valley or isolated place.