Blockchains are a new infrastructure layer for data and digital services, which can be deployed between servers, on mobile devices, or with the Internet of Things. Blockchain technology can provide some powerful new capabilities to existing systems or can replace legacy ones. The energy sector has seen significant changes over the past few decades across generation, distribution, storage, and consumption. Blockchains can provide technology solutions to these challenges: Data coordination between a myriad devices; a low-friction, automated trading platform; and open access for innovative products and services.