How to Support Start-Ups in Developing a Sustainable Business Model: The Case of an European Social Impact Accelerator

Sustainability-oriented start-ups are fundamental to developing solutions for, and to fostering, a societal transition towards a low carbon society. In this context, social impact accelerators (SIAs) are organizations specializing in accelerating the progress of sustainability-oriented start-ups. In order to design their accelerator elements (e.g., training, coaching, and funding) effectively, SIAs must be aware of the knowledge needs of start-ups to support them in developing a sustainable business model (SBM). Using a case study approach, we present one of the largest cleantech accelerator programs in Europe, the EIT Climate-KIC RIS Accelerator. Based on the program's curriculum and manual in 2019, we analyze from the perspective of the program how cleantech start-ups could be supported in the development of their SBMs by presenting accelerator elements that are intended to support start-ups in reducing their knowledge needs by (1) providing new knowledge to start-ups (e.g., trainings, workshops, and e-learning), (2) supporting start-ups' assimilation of new knowledge (e.g., coaching), and (3) supporting start-ups' application of new knowledge (e.g., documentation of planning and reporting as part of the program's contract design). Further, we discuss the knowledge needs of 63 European start-ups before and their progress as a result of accelerator participation in developing a SBM based on qualitative and quantitative data. All 63 start-ups participated in the same batch of the accelerator in 2019. Regarding the development of a SBM, knowledge needs are described considering the triple bottom line including the economic, ecological, and social layer of a business model. Based on the start-ups' evaluation, we reflect-with a focus on the environmental layer-about the most promising content and support elements of our SIA case to address the different layers, discuss their combination, and present improvement potentials to reduce start-ups' knowledge needs. With our findings, we claim to contribute to theory development in the emerging literature on SIAs and give practitioners working with sustainability-oriented start-ups insights into the usefulness of start-up support programs and different accelerator elements for developing a SBM.