States with RPS laws are doubling down, while those without take little interest. Maryland could help explain why.

By Herman K. Trabish, Utility Dive. 

curious trend is emerging when it comes to renewable energy mandates: Many states that have them are doubling down, while those that don’t are showing little interest at all. 

Since 2009, only Vermont has enacted a new renewable portfolio standard (RPS), yet five states with an RPS on the books strengthened them in the last two years alone. 

The discrepancy has more to it than a simple increase in political polarization. While that’s apparent across the nation, the debate behind Maryland’s recent decision to strengthen its renewable energy standards shows there’s more to the recent trend than ideology alone.