And you 'd still need to get air in the tank in a green way . Maybe a solar-powered , geothermal , wind-driven compressor ?
而且吧,要把空气压到罐子里也得很环保,要不试试太阳能的,地热的,风能的空气压缩机?
Iceland 's ambassador to japan , stefan stefansson , says his country 's experience suggests japan does not need subsidies to develop geothermal energy .