So effectively it's the first time there's been competition for this monopoly, because the utilities have been the only ones that owned those power distribution lines, but now it's on your roof.
所以实际上这是 与垄断的第一次抗衡， 因为发电厂一直是唯一一个 拥有这些输电线路的人，不过现在你可以在你的屋顶上发电。