瓦时

měi qiān wǎ shí diàn néng de shēng chǎn dōu huì pái fàng yī dìng liàng de èr yǎng huà tàn

每千瓦时电能的生产都会排放一定量的二氧化碳。

The electricity production process will typically result in a certain amount of CO2 emission per KWH generated.