Challenges & Solutions
Challenges
- Charge points hold persistent WebSocket sessions for years
- Firmware fleets fragment across vendors and OCPP versions
- Pricing must react to grid signals and site load in seconds
- Roaming settlements reconcile across dozens of networks
- Drivers expect sub-second app start-to-charge flows
CloudFormation Solves
- Stateful WebSocket layer with connection draining on deploys
- Vendor-profile abstraction with staged firmware campaigns
- Streaming price engine consuming grid + site telemetry
- OCPI clearing pipeline with automated dispute evidence
- Edge-cached driver APIs with pre-authorized payment tokens
Architecture Patterns
1
Charge Point Management
OCPP WebSocket gateway with session state in Redis. Command bus for remote start/stop and diagnostics. Firmware campaigns staged by vendor cohort.
2
Energy Optimization
Site controllers report load in real time. Smart charging profiles cap aggregate draw. Grid signals shift load to cheap, green windows automatically.
3
Driver & Payments
Mobile API with cached station state. Pre-auth on plug-in, capture on session end. Receipts and tax invoices generated per jurisdiction.
4
Roaming & Settlement
OCPI location/session/CDR exchange with partners. Nightly reconciliation with tolerance rules. Dispute packets assembled from raw telemetry.
Business Outcomes
99.95%
CPO backend uptime
<1s
Start-to-charge command
15-30%
Energy cost optimization
100K+
Charge points supported
Supported Providers
AWS
Azure
GCP
IBM Cloud
Oracle Cloud
Kubernetes
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