OCPI Tariff Dimensions: ENERGY, TIME, FLAT & PARKING_TIME
The four OCPI tariff dimensions in depth: ENERGY, TIME, FLAT and PARKING_TIME, how step_size rounding works, and how restrictions gate each one.
OCPI
25 articles in this category
The Economics of OCPI Roaming: Who Pays Whom
How money actually flows in OCPI roaming: the fees, the settlements, and how to think about the economics of cross-network charging.
OCPI Testing Tools and Strategies: A Practical Guide
How to test an OCPI implementation properly: mocks, schema validation, partner-style fixtures, and the operational tests that catch real bugs.
OCPI Sandbox: Try the Full API Flow Without a Partner
Run a complete OCPI 2.2.1 flow in a sandbox: credentials handshake, Locations, Sessions, Commands and CDRs, with no roaming partner needed.
OCPI Request Examples: Locations, Sessions & CDR JSON
Copy-paste OCPI 2.2.1 request examples: real Locations, Sessions, and CDR JSON payloads, with the HTTP method, endpoint path, and headers for each.
How to Test an OCPI Connection Before You Go Live
A step-by-step OCPI integration test workflow: handshake, versions, module smoke tests, and error handling, so nothing surprises you on go-live day.
OCPI Integration Common Mistakes and Pitfalls: 11 to Avoid
Common OCPI integration mistakes and pitfalls (pagination, idempotency, timestamps, status codes) and the concrete fix for each, from real builds.
OCPI Security and Authentication: Tokens, TLS & mTLS
How OCPI security and authentication really work: bearer tokens, TLS, mTLS, the threat model, and a checklist to keep tokens from leaking.
OCPI 3.0 Preview: V2G, Grid Services, and Migration Planning
What OCPI 3.0 is positioned to change: bidirectional sessions, CDRs, tariffs, and grid services, plus how to prepare while running 2.2.1 today.
OCPI 2.3.0 Features: Payments, AFIR Pricing and Parking
The features OCPI 2.3.0 adds: the Payments module, AFIR-ready pricing, the Parking object, North American tax support, and who should upgrade.
OCPI 2.2 vs 2.2.1 Differences: Every Change and When to Upgrade
OCPI 2.2 vs 2.2.1 differences explained: the exact fields and enums 2.2.1 changed, what stayed the same, and whether you need to migrate.
OCPI HubClientInfo Module: How Hub Discovery Works
How the OCPI HubClientInfo module lets a hub publish its connected parties, with worked PUT/GET examples, the four status values, and the gotchas that bite.
OCPI 2.1.1 to 2.2 Migration: The Step-by-Step Order
OCPI 2.1.1 to 2.2 migration in the order to actually do it: what changed, the Credentials handshake to fix first, and how to upgrade without breaking partners.
OCPI ChargingProfiles: Smart Charging via Roaming Explained
How OCPI ChargingProfiles lets an eMSP shape power on a live session: the fields, a full worked round trip, and the gotchas that quietly break it.
OCPI Hub vs Peer-to-Peer: How to Choose
When to roam through a hub, when to build direct peer-to-peer integrations, and what the tradeoffs cost you in practice.
OCPI Credentials and Versions Modules: How Partners Find Each Other
Before any data can flow between an eMSP and a CPO via OCPI, they have to negotiate. The Credentials and Versions modules are the handshake.
OCPI Commands Module: Remote Charging Control Across Networks
How eMSPs trigger start/stop/reserve actions on CPO stations via OCPI. The Commands module is what makes "Start Session" buttons in apps work.
OCPI Tariffs Module Explained: Fields, JSON, Examples
How the OCPI Tariffs module models EV charging prices: per-kWh, per-minute, time-of-use and idle fees, with annotated JSON and step_size gotchas.
OCPI Locations Module Explained: Data Model & Push Updates
The OCPI Locations module explained: the Location/EVSE/Connector data model, push updates, evse_id format, and the gotchas that get objects rejected.
OCPI Tokens Module: Authentication Without Sharing Customer Data
How eMSPs grant customers access to CPO stations via tokens, and how CPOs validate those tokens without ever seeing the underlying customer.
OCPI CDRs Module: How Billing Records Flow Between Networks
CDRs (Charge Detail Records) are the final, immutable billing records exchanged via OCPI after a session completes. Here is how they work.
OCPI Sessions Module: Live Charging Session Tracking, Explained
How CPOs stream live session data to eMSPs over OCPI: when a session starts, how much energy has flowed, and how status changes get pushed.
What Is a CPO? What Is an eMSP? EV Charging Roles Explained
CPOs operate the charging stations. eMSPs own the customer relationship. The split is the foundation of how the EV charging industry actually works.
OCPI Version History: 2.1.1 → 2.2 → 2.2.1 → 2.3.0 → What's Next
Every OCPI release from 2.1.1 through 2.3.0, plus the 3.0 preview: what each version changed, and which one a new integration should target.
OCPI Explained: The Protocol That Makes EV Roaming Possible
OCPI (Open Charge Point Interface) is the protocol that lets one charging network accept another network's customers. What it is and how it works.