Humanity is facing environmental issues that require the whole way in which we produce, distribute, and consume energy to be challenged. One technical solution that is widely considered is the smart grid, meaning a decentralized and multi-scale smart energy system. For more than a decade, various pilot projects have been implemented successfully all over the European Union. If such pilots are to be scaled up into effective roll-outs, the electrical engineering workforce needs to be prepared, as do the public authorities, engineering researchers and broader public. They need quick awareness-raising and training in the benefits, drawbacks, opportunities and skills associated with smart grids. Due to the complex nature of the situation and the related challenges for society, designing this training requires an innovative and participative approach. This article proposes a case study on applying a living lab approach to the design of innovative online courses on smart grids.