Scaling Power BI solutions for enterprise-level data analytics is challenging due to data volume constraints, performance bottlenecks, and refresh failures. Power BI consulting tackle this by implementing incremental refresh, partitioning data, and offloading heavy processing to data warehouses like Azure Synapse Analytics. Using aggregations, composite models, and Power BI Premium features like large datasets and paginated reports ensures better scalability. Additionally, consultants work closely with IT teams to optimize database indexing, reduce unnecessary columns, and implement data compression techniques to handle massive datasets efficiently without compromising performance and usability.