Feedstock costs, which are two-thirds of technology costs, are also increasingly uncertain, the report says. Cleaner energies , such as wind and solar power , are cheaper compared to coal than biomass in the US , according to a study by the US - based Natural Resources Defense Council ( NRL ) . It examined the full systems costs for energy , including offshore wind , solar and onshore wind , and biomass under various circumstances for the period 2015 - 2025 , and found the costs for renewable energy were the same or cheaper than biomass . The report also said some forms of biomass , such as forests , produces more CO2 than coal and natural gas for up to 10 years .
Cleaner energies , such as wind and solar power , are cheaper compared to coal than biomass in the US , according to a study by the US - based Natural Resources Defense Council ( NRL ) . It examined the full systems costs for energy , including offshore wind , solar and onshore wind , and biomass under various circumstances for the period 2015 - 2025 , and found the costs for renewable energy were the same or cheaper than biomass . The report also said some forms of biomass , such as forests , produces more CO2 than coal and natural gas for up to 10 years .