OCPP Load Testing & Stress Testing
Your CSMS needs to handle thousands of concurrent charge points without dropping connections or losing transactions. OCPPLab lets you simulate real-world scale before your network grows to it.
Why OCPP Load Testing Matters
Every OCPP charge point maintains a persistent WebSocket connection to your CSMS. At scale, that means managing 10,000+ long-lived connections, each sending periodic heartbeats, status notifications, and meter values.
Most CSMS platforms are tested with 10-50 charge points. When they hit 500+ in production, connection timeouts, message queue backlogs, and database write bottlenecks start appearing.
Common Failures at Scale
- ✕WebSocket connection pool exhaustion at 500+ chargers
- ✕Message processing latency spikes during peak hours
- ✕Database write contention on MeterValues and transactions
- ✕Heartbeat timeout storms on network hiccups
- ✕Memory leaks from improperly closed connections
- ✕OCPP message queue overflow under sustained load
Configure Your Fleet
Choose from 100+ charge point models or create custom profiles. Set connection count from 10 to 10,000+.
Define Charging Patterns
Set realistic session distributions: peak hours, concurrent starts, rapid session turnover, overnight slow charging.
Run the Test
All virtual charge points connect simultaneously via WebSocket. Each sends realistic OCPP messages.
Analyze Results
Real-time dashboards show connection success rate, latency percentiles (p50, p95, p99), throughput, and error rates.
What is OCPP Load Testing?
OCPP load testing measures how a Charge Station Management System (CSMS) performs under high volumes of concurrent charge point connections. Each OCPP charge point maintains a persistent WebSocket connection, sending heartbeats, status notifications, meter values, and transaction messages. At scale (500+ charge points), many CSMS platforms experience connection pool exhaustion, message processing latency spikes, and database write contention. OCPPLab enables load testing with 10,000+ simultaneous virtual charge points, measuring connection time, message latency (p50, p95, p99), throughput, and error rates — helping teams find breaking points before production deployment.
Related Resources
Find your breaking point before your customers do
Deploy 10,000+ virtual charge points in under 2 minutes.
Last updated: