Estimates of 2020 show that 13.66% of ‘Energy Consumption’ in Maine was ‘Renewable Energy’ not including biomass but others such as wind, solar, hydroelectric, geothermal, etc.
https://www.eia.gov/state/print.php?sid=ME
As for ‘Electric Power’, 52% of electricity generated in Maine in 2021 was produced by hydroelectric, wind, and solar.
https://www.eia.gov/electricity/data/browser/#/topic/0?agg=2,0,1&fuel=vvvvu&geo=004&sec=g&freq=A&start=2001&end=2021&ctype=linechart<ype=pin&rtype=s&maptype=0&rse=0&pin=