Blockchain technology has attracted a lot of interest recently. Many different sectors from all over the world are now researching the technology to find any prospective uses that can enhance their company. This is because, by introducing new processes, blockchain technology has the ability to fundamentally alter the way that current systems now handle all types of transactions. The loyalty reward program sector, which deals with the exchange of loyalty points, may be able to take advantage of blockchain technology’s potential. Different Loyalty Reward Program models, however, define the Loyalty Reward Programs sector. Therefore, the current study investigates how blockchain technology may affect the development of a new loyalty reward program. To conduct the research, an exploratory multiple-case study was employed. In this thesis, we first investigate the use of blockchain in energy communities and their consumer incentives. Then we proposed a model for a novel blockchain-based rewarding system and examined multiple case studies of their usage in energy communities. Our results show that using a blockchain-based rewarding system in energy communities can benefit the community, environment and energy consumers.