Medium severitycapacity
Power BI Refresh Error:
Refresh operation throttled by Power BI Premium
What does this error mean?
Power BI Premium throttles data refresh operations when too many semantic models are being processed concurrently on a capacity, causing refreshes to be delayed or queued. This is a capacity-level constraint, not a model-level error.
Common causes
- 1Too many semantic models scheduled to refresh simultaneously on the same Premium capacity
- 2Large or complex semantic models consuming disproportionate capacity resources and starving concurrent refreshes
- 3Refresh schedules bunched at peak hours (e.g., top of the hour) creating concurrency spikes
- 4Undersized Premium capacity SKU relative to the number of models and refresh frequency required
How to fix it
- 1Step 1: Review all scheduled refresh times across semantic models on the affected capacity and stagger them to distribute load — avoid scheduling multiple large models at the same time.
- 2Step 2: Identify the largest or most resource-intensive semantic models using the Premium Capacity Metrics app and consider splitting them into smaller semantic models.
- 3Step 3: Move non-critical or lower-priority semantic models to a different capacity or workspace to reduce concurrency on the affected node.
- 4Step 4: If throttling is persistent, evaluate upgrading to a larger Premium SKU or enabling autoscale if using Premium Per User or Fabric capacity.
- 5Step 5: Retry the throttled refresh operation during off-peak hours or reschedule it to a time with lower concurrent activity.