Power BI consultants improve report accessibility and usability by designing user-friendly, intuitive dashboards that cater to different user roles within the organization. They incorporate interactive features like drill-downs, filters, and tooltips, allowing users to explore data without overwhelming complexity. Power BI consultant also ensure that reports are mobile-friendly and accessible across devices, making it easy for teams to access insights on the go. By optimizing the user interface and experience, consultants help users, from executives to analysts, easily navigate reports, fostering widespread adoption and more effective use of the platform.