Sure, WA is an outlier because of its geography (more consistent rivers), but other states that are very similar to each other have huge differences. So it’s not something that’s easily explained by geography or local politics.
I see two possibilities here:
US stagnates at some percent because the bottom states refuse to change
bottom states follow their neighbors’ lead and renewable adoption accelerates
Sure, WA is an outlier because of its geography (more consistent rivers), but other states that are very similar to each other have huge differences. So it’s not something that’s easily explained by geography or local politics.
I see two possibilities here: