In this study, we first discuss the disruption and its impacts on the power and utilities sector. We identify the drivers of the disruption and the impact it will make on the sector. Then, as one of the drivers of disruption, we examine the blockchain technology, its features, benefits and limitations. We identify a performance evaluation framework for a power and utilities blockchain, in a distributed generation setting. Finally, we evaluate the performance factors' interrelationships on the performance of the blockchain system and investigate the importance and cause-effect groups of the factors.