Posts under the OCPPLab Team byline are written and reviewed collectively by OCPPLab engineers and editors. We use this byline for product updates, comparison content, and educational pieces where a single named author isn't the right attribution.
All factual claims about OCPP and OCPI on the OCPPLab blog are cross-checked against the upstream specifications published by the Open Charge Alliance and the EVRoaming Foundation.
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Posts by OCPPLab Team
20 posts published.
OCPP AI Agents for EV Charging: A Complete Guide
How OCPP AI agents automate EV charging across 5 use cases — fault diagnosis to smart charging — plus architecture, guardrails, and how to test them safely.
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LLM vs SLM for EV Charging: How to Choose the Right Model
LLM vs SLM for EV charging software: when to use each across OCPP fault triage, edge monitoring, and AI agents, plus a hybrid pattern for 5,000+ chargers.
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Best OCPP Simulators & Emulators in 2026 Compared
Compare the 4 best OCPP simulators and emulators for CPMS testing: cloud platforms, open-source libraries, and field tools for OCPP 1.6 and 2.0.1 workflows.
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How to Test a CPMS: The Complete Testing Guide
A complete guide to CPMS testing: 7 core methods—protocol conformance, load, security, integration, and roaming—plus a full checklist and CI/CD pipeline.
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How to Implement OCPI Roaming: A Complete Guide
Implement OCPI 2.1.1 roaming for your EV charging network. A step-by-step guide to all 7 modules, credentials, hub integration, and testing for CPOs and eMSPs.
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Best OCPP Testing Tools in 2026: Compared & Explained
Compare 5 of the best OCPP testing tools in 2026 — OCPPLab, SteVe, OCPP.js, EVerest, and MobileCharger — across scale, automation, and pricing tradeoffs.
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OCPI vs OICP vs OCHP: EV Charging Roaming Protocols Compared
Compare OCPI vs OICP vs OCHP, the 3 main EV charging roaming protocols, by architecture, adoption, and Plug&Charge support so you can pick the right standard.
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What Is OCPP? Open Charge Point Protocol Explained
What OCPP is, how the Open Charge Point Protocol works, and what EV charging teams must know about OCPP 1.6, 2.0.1, message flows, security, and testing.
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What Is OCPI? EV Charging Roaming Protocol Explained
What OCPI is, how EV charging roaming works, and what CPOs and eMSPs must know about OCPI 2.1.1 vs 2.2.1, all 8 modules, hubs, and how to implement it.
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What Is a CPMS? Charging Station Management System Explained
What a CPMS is, what a Charging Station Management System does, how it works with OCPP, its 8 core functions, and how EV teams build, buy, and test one.
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CPO vs eMSP: Understanding EV Charging Roles Explained
CPO vs eMSP: the two core EV charging roles. Learn how they differ, their business models, and the 7-step OCPI flow that connects chargers to EV drivers.
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Smart Charging Explained: How EV Load Management Works
Learn how smart charging controls EV power with OCPP charging profiles across 6 strategies—load balancing, peak shaving, demand response, ISO 15118, and V2G.
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Complete Guide to EV Charger Testing: Tools & Methods
Learn five EV charger testing methods—functional, load, compliance, integration, and regression—plus virtual vs physical best practices to ship a reliable CPMS.
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OCPP WebSocket Communication: A Developer's Guide
Learn how OCPP uses WebSocket for real-time EV charger communication: connection lifecycle, 3 JSON message types, heartbeat, reconnection, and WSS security.
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GIREVE Hub Integration: A Complete Guide for CPOs & eMSPs
Learn how to integrate with GIREVE, Europe's leading EV charging roaming hub: OCPI modules, the 5-step certification process, costs, and Hubject comparison.
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ISO 15118 & Plug and Charge: EV Authentication Guide
ISO 15118 enables Plug and Charge: automatic EV authentication with no app or card. Learn how it works with OCPP 2.0.1, its 7-step flow, and how to test it.
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EV Charging Glossary: 50+ Terms Every Developer Should Know
A developer reference defining 50+ EV charging terms across OCPP, OCPI, CPMS, CPO, eMSP, ISO 15118, and smart charging, so you can ship integrations faster.
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Best CPMS Platforms 2025: Open Source vs Commercial
Compare 7 open source and commercial CPMS platforms in 2025 across OCPP, scalability, OCPI roaming, and pricing to choose the right one for your network.
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How to Build a CPMS: Complete Architecture Guide
Build a production CPMS from scratch: WebSocket servers, OCPP message routing, authorization, smart charging, OCPI roaming, and scaling 6 core components.
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How to Test OCPP Protocols Effectively: Complete Guide
Learn to test OCPP protocols effectively with compliance, functional, and load testing across 4 phases, using virtual emulation to skip costly charger hardware.
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