Hukkinen, TaneliMattila, JuriSmolander, KariSeppala, TimoGoodden, Tobias2019-01-032019-01-032019-01-08978-0-9981331-2-6http://hdl.handle.net/10125/60123In recent years, information systems have not been largely evaluated by their operating costs, but mainly by their strategic benefit and competitive advantage. As blockchain-based decentralized applications become more commonplace, representing a shift towards fully consumption-based distributed computing, a new mode of thinking is required of developers, with meticulous attention to computational resource efficiency. This study improves on a blockchain application designed for conducting microtransactions of electricity in a nanogrid environment. By applying the design science research methodology, we improve the efficiency of the application’s smart contract by 11 %, with further improvement opportunities identified. Despite the results, we find the efficiency remains inadequate for public Ethereum deployment. From the optimization process, we extrapolate a set of general guidelines for optimizing the efficiency of Ethereum smart contracts in any application.10 pagesengAttribution-NonCommercial-NoDerivatives 4.0 InternationalThe Transformational Impact of BlockchainOrganizational Systems and Technologyblockchain, design science, Ethereum, nanogrid, smart contractConference Paper10.24251/HICSS.2019.823