Utilizing SDGs in sustainability assessments of innovations: Deriving methodological recommendations from existing approaches

Since the 17 Sustainable Development Goals (SDGs) were established in 2015, scientists have attempted to utilize them for sustainability assessments. This paper aims to synthesize the existing approaches in order to make recommendations for future utilization. A systematic literature review was conducted, focusing on innovations as the assessment object and including scientific papers as well as gray literature. Of the initially identified 603 documents, 30 articles contained precise descriptions of approaches utilizing the SDGs for the sustainability assessment of innovations. These approaches were analyzed in three sequential steps: categorization of the operational choices of SDG-based sustainability assessments, discussion of the advantages and disadvantages of these operational choices, and finally deriving recommendations for future utilization. We identified two main approaches: (1) integrating the SDGs into the sustainability assessment methodology or (2) subsequently assigning the assessment results to the SDGs. For the first approach, the SDGs were most frequently used as assessment criteria, but were also used to derive benchmarks or select indicators. In the second approach, assessment results were linked to goals, targets or indicators. The majority but not all articles clearly stated that all 17 SDGs were considered. The most frequently mentioned motivation for SDG utilization was to provide a holistic definition of sustainable development, followed by providing a precise description of sustainable development and international recognition. Only the integration of all 17 SDGs into the sustainability assessment conveys all three of these motivations. Hence, this approach is recommended for maximizing the utilization of SDGs when assessing the sustainability of an innovation. Subsequently assigning the assessment results to the SDGs is suggested as an alternative approach if the scientist's time and resources are limited. Since this approach predefines the SDGs that can be linked through the sustainability assessment methodology utilized, the holistic character of the SDGs is forfeited. More generally, the diversity of approaches found in the literature can be explained by several individual limitations and prerequisites. It is therefore recommended that authors document their research motivation transparently and justify the operational choices they made to fulfil it. This study contributes to the scientific community by (a) providing an overview of possible approaches for utilizing the SDGs in sustainability assessments of innovations and (b) providing recommendations for utilization based on a discussion of the advantages and disadvantages.