加州打算直接從法律上規定從 2020 年開始的新房子都要有太陽能：「California set to become first US state requiring solar panels on new homes」。
The state’s Energy Commission is due to vote next week on new energy standards that would require virtually all new homes to be constructed with solar panels from 2020.
如果通過的話，從 20% 直接變成強制性的 100%：
Currently around 20 per cent of single-family homes are constructed with solar capacity built in, but if the new standards are approved as expected this proportion will rise sharply.
下個禮拜回來看看消息好了，這應該是蠻指標性的事情... 無論是在經濟上還是在環保題材上。