Custom EV Charging Management System, Built to Your Spec
A Charging Management System (CMS, also called CSMS or CPMS) is the software backend that monitors, controls, authorizes and bills EV chargers over the OCPP protocol.
Who this is for
Three profiles reach us: CPOs paying per-charger SaaS fees at scale where a build now pays back inside 18 months. Charger OEMs who need a branded platform they can ship with hardware instead of reselling someone else's software. Operators whose workflows (multi-site, roaming, complex tariffs, driver segments) no off-the-shelf CMS supports without concessions.
Why build instead of license
At 10 chargers, licensing a SaaS platform beats hiring an engineering team. Past 300 to 500 chargers, the per-charger fees start looking like an engineering team anyway. A custom build shifts the economics: one upfront cost, near-zero per-charger cost after, and every workflow bends to your operations instead of the other way around.
The bigger story is what you keep. Every session, every meter value, every fault code stays on your infrastructure. That data is the raw material for the next decade of operational improvements, predictive maintenance tuned to your fleet, dynamic pricing tuned to your customers, load management tuned to your grid. AI models trained on your data serve your margins. Operators who license watch the dataset come back later as someone else's paid feature; operators who build compound on it every quarter.
Then there's the third-party stack you already run. ERP, CRM, finance, dispatch, HRMS, telematics, site meters, driver apps, a custom build integrates with the tools that make your business go, on your schedule. Connectors that would cost extra on someone else's marketplace, or wait months for the SaaS vendor's roadmap, become normal engineering on yours.
For OEMs, a white-label platform captures the software revenue that would otherwise stay with the SaaS vendor, and lets you ship product optimizations exclusive to your line.
Foundation. The charger connectivity layer.
The always-on layer that keeps every charger reachable, configurable, and healthy. Deployed on your cloud and integrated with the rest of your operations stack.
- OCPP 1.6 and 2.0.1 stack integration
- Charger provisioning and commissioning
- Remote configuration and diagnostics
- Firmware and OTA management
- Site and charger asset management
Driver, session and payments.
The revenue layer. Everything from the moment a driver plugs in through to the invoice, receipt and refund. Built to match your operating model, not a SaaS template.
- User mobile application (Android, iOS, PWA)
- Charging session lifecycle management
- Tariff and pricing management
- Billing, wallets, and payments
- Refunds and reconciliation
- Financial and transaction reporting
Advanced. Roaming, settlement, compliance.
The layer that turns a running network into a scalable business. Roaming across borders, dynamic pricing that responds to demand, multi-party settlement, and the reporting your finance team and regulators expect.
- OCPI roaming and interoperability
- Dynamic pricing rules
- Multi-entity revenue settlement
- Tax and compliance reporting
- Revenue leakage detection
Standards, versions, roaming
OCPP 1.6J and 2.0.1 both supported side by side, with the smart charging, remote trigger and firmware management profiles turned on where they matter. OCPI 2.2.1 for roaming across CPOs and eMSPs. ISO 15118-2 and 15118-20 readiness for plug-and-charge as your hardware roadmap catches up. Implementations are interoperability-tested against real chargers and CMS platforms before handover.
Why RIOD
RIOD is one of the few companies that owns the entire charging stack, hardware, firmware, cloud, driver applications. That vertical depth changes what we can build for you. When a CMS integration hits a corner case, we know whether it's a WebSocket bug, an OCPP handling issue, a firmware bug, or a hardware timing quirk, because we have written every layer.
We are also actively working on what comes next: offline BLE charging for basement sites, self-resettable RCD architectures, edge orchestration through Power Master, and research on predictive maintenance for Indian conditions. The CMS you build with us sits on a stack that keeps moving forward.
Engineering notes behind Custom CMS Development.
Questions we get most.
What is a custom EV charging management system?
A custom CMS is a charging backend built to an operator's own specification instead of licensed as SaaS. The operator owns the source code, data and roadmap. It manages charger connectivity over OCPP, driver authorization, payments, tariffs and remote operations.
How long does it take to build a custom CMS?
A production-ready core platform with OCPP 1.6J, dashboard, driver app and billing typically takes 4 to 6 months. RIOD delivers in milestones, so operators can go live with core functions in 10 to 12 weeks and add modules after.
Custom CMS vs Ampeco, Driivz or ChargeLab: which is better?
SaaS platforms are faster to start but charge recurring per-charger fees and limit customization. A custom build costs more upfront, then costs near zero per charger, supports any workflow, and the IP is yours. Custom wins past roughly 300 to 500 chargers or when white-labeling is the business model.
Which OCPP versions do you support?
OCPP 1.6J including smart charging, remote trigger and firmware management profiles, and OCPP 2.0.1. We also implement OCPI 2.2.1 for roaming and design for ISO 15118 plug-and-charge readiness.
Can you migrate our chargers from an existing CMS?
Yes. We migrate charger fleets by re-pointing OCPP endpoints, porting driver accounts, RFID lists and transaction history, and running both platforms in parallel during cutover so charging is never interrupted.
Talk to us about your CMS build.
Tell us what your charging network needs. Let's get on a call.
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