Reference: Horstink, L., Wittmayer, J., Ng, K., Luz, G., Marín‐González, E., Gährs, S., Campos, I., Holstenkamp, L., Oxenaar, S., & Brown, D. (2020). Collective renewable energy prosumers and the promises of the Energy Union: taking stock. Energies, 13(2), 421.