The machines after that, all agree, will be proper, if experimental, power stations—mostly rated between 200MW and 400MW—able to supply electricity to the grid.

所有人都同意， 之后的机器将是合适的，如果是实验性的发电站——大多数额定功率在 200 兆瓦到 400 兆瓦之间——能够向电网供电。