The aim and purpose of this book is to explore the market/investment potential of bio-energy/mass in Nigeria, with South East Nigeria as a case study. Data for the study consists of primary and secondary sources. From the data analysis the findings of the research showed that biomass can be found in Nigeria (South East) in sustainable and sufficient quantity. Market potential of bio-energy/mass is found to be significant with potentials for growth. The research reveals that the quantum of conventional energy in the energy market that can be substituted by bio fuel is substantial. The study also reveals that Nigeria''s investment potential in bio energy/mass production may depend on government mandate, production cost of bio-fuels relative to other fuel substitutes, subsidy on petroleum products and the level of agricultural productivity. In terms of capacity for commercial deployment, feedstock supply, sustainability, Nigeria has huge reserve of natural resources and factors deployable for alternative energy production - productive arable land, favorable climatic conditions, abundant and potential feedstock production like cassava, maize, palm oil, sugarcane etc.