To maintain long-term value, ensure that the Power BI consultant provides thorough documentation of the dashboards, data models, and processes they’ve built. This allows internal teams to understand and maintain the solutions after the consultant leaves. Arrange for training sessions so that your team can manage the Power BI tools and adapt the reports as business needs evolve. Also, establish a post-project support agreement for occasional consultation or troubleshooting. Having internal expertise, along with continued access to the consultant, ensures sustained value from their work.