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Uncertainties in evaluating bioenergy projects have lead policymakers to adopt a restrictive approach or even refuse to evaluate projects when the available information is limited or a clear perception of its benefits and impact is lacking. Indeed, despite its potential advantages, a bioenergy system poses several conceptual and operational challenges for academic as well as practical scrutiny because the inherent relationship and the intersection of areas related to energy production and agricultural activity requires a deeply integrated assessment. The aim of this paper is to review the available works in this field and propose an approach for supporting policymakers in the taking decision process of deploying sustainable bioenergy systems. The SIByl-LACAf framework provides a comprehensive framework for addressing the inherent complexity of the subject and its sustainability and acceptability as part of the evaluation process. With this approach, different and complementary evaluation methods are reviewed and set in a logical and sequential structure to draw a group of indicators used for assessing a given project with the help of a strengths, weaknesses, opportunities, and threats (SWOT) matrix. When acceptability is identified as an issue, a Public Consultation and Communication (PC&C) scheme can complement this process. The suggested application for Mozambique indicate that an acceptable outcome is possible even when considering the data requirements and constraints of developing countries. Thus, the potential of this integrated approach outweighs such limitations. [ABSTRACT FROM AUTHOR]