Biomass stocks are publicly traded companies whose business involves growing, collecting, or using biological matter (biomass) which can be used to make some other form of energy. Biomass includes human waste, municipal solid waste, sewage sludge, as well as industrial wastes such leftover wood from logging operations.

Mulch from yard waste By Dvortygirl (Own work) [GFDL or CC BY-SA 3.0], via Wikimedia Commons

4energy Invest (ENINV.BR)
Andritz Group (ADRZF)
Arcadia Biosciences, Inc. (RKDA)
BioAmber (BIOA)
Bion Environmental Technologies, Inc. (BNET)
Bunge, Ltd. (BG)
Claymore/Clear Global Timber Index (CUT)
Darling Ingredients (DAR)
Deltic Timber Corp. (DEL)
EcoSynthetix, Inc. (ECO.TO)(ECSNF)
Enviva Partners, LP (EVA)
IQ Global Agribusiness Small Cap (CROP)
iShares Global Timber & Forestry Index Fund (WOOD)
John Deere (DE)
Market Vectors Environmental Services ETF (EVX)
Pinnacle Renewable Holdings Inc. (PL.TO)
Plum Creek Timber Co. Inc. (PCL)
Potlatch Corp. (PCH)
Rentech (RTK)
Stericycle, Inc. (SRCL)
Syngenta AG (SYT)
Viaspace Inc. (VSPC)
Viridis Energy Inc. (VRD.V)(VRDSF)
Waste Management (WM)

If you know of any biomass stock that is not listed here, but which should be, please let us know by leaving a comment. Also for stocks in the list that you think should be removed.