A Power BI consultant enables real-time data insights by setting up live connections to data sources, ensuring that dashboards and reports are automatically updated as new information becomes available. They design real-time reporting solutions that allow decision-makers to monitor key metrics continuously, making timely and informed business decisions. By optimizing the data refresh cycles and integrating Power BI with real-time data streams from cloud services, databases, or IoT devices, consultants ensure that stakeholders have access to up-to-date information, improving responsiveness to market changes or operational issues.