The best replacement for biomass is biofuel.

The best alternatives to biomass are rated as following:
★★★★★  biofuel
★★★★★  fossil fuels
★★★  biogas
★★  biodiesel
★  fossil fuel
★  energy pyramid
★  solar energy
★  net primary productivity
  wind energy
  biofuels
  ground source
  geothermal
  pyramid of numbers

Your alternative for biomass is not listed? Suggest!
Speaking about biomass, one probably shouldn't forget about chp.

Other search terms related to biomass and their ratings are:
★★★★★ chp
You have in mind a companion for biomass and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of biomass in all years. Click on graph for more.
biomass
biofuel
fossil fuels