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Just looking at total energy production doesn’t give you the whole picture, though. When you look at renewable energy generation as a percentage of the states’ total energy production, you see that several states are already producing nearly 100 percent of their energy from renewable sources.
And then there’s the dirtiest energy states. Wyoming tops the list with less than 0.5 percent of its energy coming from renewable sources.
Unsurprisingly, the top 10 states that contribute the most carbon dioxide emissions are some of the most populous states. Indiana and Louisiana are the only two states on the list that aren’t also one of the top 10 most populous states.
And lastly, some states have made significant strides in the last 20 years to clean up their act. Here’s the 10 most improved C02 emitters since 1990:
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