Stochastic techno-economic evaluation of cellulosic biofuel pathways
Xin Zhao1, Tristan R Brown2, Wallace E Tyner1
1Department of Agricultural Economics, Purdue University, West Lafayette, IN 47907, USA.
Bioresource Technology
|October 11, 2015
Summary
Evaluating eight cellulosic biofuel pathways, this study found none profitable under projected energy prices. Fast pyrolysis and hydroprocessing (FPH) showed the lowest breakeven price but still carried significant risk.
Area of Science:
- Biomass Energy
- Chemical Engineering
- Financial Analysis
Background:
- Cellulosic biofuels offer a sustainable alternative to fossil fuels.
- Technological and economic uncertainties challenge biofuel production viability.
- Assessing multiple production pathways is crucial for informed investment decisions.
Purpose of the Study:
- To evaluate the economic feasibility and stochastic dominance rank of eight cellulosic biofuel production pathways.
- To analyze the impact of technological and economic uncertainties on biofuel production economics.
- To identify the most robust pathway for investment under risk.
Main Methods:
- Techno-economic assessment (TEA) and financial analysis were employed.
- Net present values (NPV) and breakeven prices were calculated for each pathway.
- Uncertainty analysis incorporated fuel prices, capital costs, yields, and feedstock costs using @Risk software.
Main Results:
- No cellulosic biofuel pathway achieved profitability at expected values under projected energy prices.
- Fast pyrolysis and hydroprocessing (FPH) exhibited the lowest breakeven fuel price ($3.11/gallon of gasoline equivalent).
- FPH demonstrated a 59% probability of loss under projected energy prices, indicating substantial investment risk.
Conclusions:
- Cellulosic biofuel production faces significant economic hurdles under current projections.
- FPH emerges as the least risky option among the evaluated pathways for risk-averse investors.
- Further technological advancements and supportive policies may be necessary to enhance biofuel economic viability.
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