Another threat to electricity supply comes from the power grid itself. 电力供应的另外一个威胁则来自于电网本身。
Tea-time troubles Renewables are a problem for the grid, as currently configured, because supply has to match unfettered demand minute-by-minute. 按照现在的配置,可更新对电网来说是个麻烦,因为电力供应必须与分分秒秒无拘无束的需求相匹配。