Substantially rectangular-shaped tanks are provided for storing liquefied gas, which tanks are especially adapted for use on land or in combination with bottom-supported offshore structure such as gravity-based structures. The pressure waves are preferably created by cycling onoff signals to the solids collection pump at a user selected frequency. A flowable, curable dielectric material, such as epoxy, is applied between the outermost busbar conductors and the inner surfaces of the top and bottom pieces of the busway housing. The first load voltage is subsequently recharged by charge sharing from the second load voltage so that the charge pump is not initially necessary for recharging the first load voltage.