The Distribution Connection and Use of System Agreement (DCUSA) is a multi-party contract between distributors, suppliers and producers of licensed electricity in the United Kingdom, which deals with the use of the electricity distribution system. The Distribution Connection and Use of System Agreement (DCUSA) provides a single, centralised document on the connection and use of electricity distribution networks. It includes charging methods for the connection and use of electricity distribution networks. If you would like to discuss whether you should be a part of this code and, if so, how to become one, please contact DCUSA. **If you need to update your DCUSA website users or operating contacts, you must be a registered site user. Please go to “Become a Website User” to apply for an account. Your DCUSA Contract Manager company must approve your site application.** All licensed electricity distributors and suppliers must become parties to the DCUSA. If you have any questions, please contact us via this website, LiveChat, or call the help desk on 020 7432 3011 between 9:00 am and 5:00 pm. . . .