On-site EV charging management

Charge more cars on the power you already have.

Nohmad Edge CSMS measures your building's load and shares what's left across every charger, per phase, every ten seconds. Any OCPP 1.6J smart-charging AC charger, no internet required. And for drivers, Nohmad Go.

Explore Edge CSMSEstimate your site's capacity
re-allocation
10 s
per-phase limits, where mapped
L1·L2·L3
any AC smart-charging brand
OCPP 1.6J
no internet needed
On site
Site powerIllustrative
Site load
138.0kW
Site limit
138.0kW
EV charging
36.8kW
Cars charging
18of 18
50
100
200
250 kW
Limit 138 kW
L1200 / 200 A
L2200 / 200 A
L3200 / 200 A
Building loadEV chargingSite limitWithout load managementSimulated site: 200 A per phase, 36 residents' cars plus daytime visitors.

The problem

The supply is the bottleneck.

Every site with more than a couple of cars runs into the same limit: the incoming supply. A building sized for lifts, pumps and apartments was never sized for thirty cars charging at once, and a supply upgrade is the expensive, slow and disruptive way out.

But a building's load moves through the day, and so does its spare capacity. Measure the real load, share what is left, and a site can add chargers before it adds amps.

25.8%

of new car sales in Australia were EVs in the first half of 2026. Each of those cars needs somewhere to charge.

Source: Electric Vehicle Council, State of EVs 2026, reported by the CommBank newsroom (30 Sep 2026)

2.2.2clause

AS/NZS 3000 lists four ways to determine maximum demand: calculation, assessment, measurement and limitation. EV Council guidance treats load management as a “definite duty cycle” under assessment, with protective devices as the limitation backstop. Your designer makes the call.

Source: Electric Vehicle Council, Determining maximum demand for an apartment complex with EV chargers (2024), on AS/NZS 3000 clause 2.2.2

10s

How often Edge CSMS re-shares the spare capacity across the chargers, from meter readings taken every second.

How it works

Measure. Share. Enforce.

One industrial PC in your switchroom runs the charging network and the load management together: an OCPP 1.6J charge-point management system and a per-phase allocation engine on the same box.

  1. 01Meter poll · 1 s

    Measure

    A meter on the main switchboard reads every phase every second: an Algodue UPM209 over Modbus-TCP (built-in preset, validated against an emulated meter so far), or another supported meter. Boards without their own meter can be modelled as virtual meters.

  2. 02Allocation · 10 s

    Share

    Every 10 seconds, each board's limit minus its measured non-EV load (lifts, pumps, apartments) is shared across the cars charging beneath it, at equal current or equal power. A charger gets the tightest limit above it. Limits apply per phase where meters and charger phase mappings exist, otherwise on the worst phase.

  3. 03OCPP 1.6J smart charging

    Enforce

    Limits reach each charger as standard OCPP 1.6J charging profiles. A charger that ignores its limit is clamped, and every allocation is logged so it can be replayed exactly.

How Nohmad Edge CSMS sits in a sitePower runs from the grid through the main switchboard and sub-boards to the chargers. A site meter (Algodue UPM209, Modbus-TCP) reads the incomer. Edge CSMS, an industrial PC in the switchroom, reads the meter and sets each charger's limit over OCPP 1.6J. It serves the operator console and sends webhooks, REST API data and CSV exports. A BMS/EMS link and an optional cloud uplink are on the roadmap.GridIncoming supplyMain switchboardIncomerSite meterAlgodue UPM209Modbus-TCPEdge CSMSIndustrial PC in the switchroomOCPP 1.6J CSMSLoad managementOperator consoleWebhooks · REST API · CSVBMS / EMS link · roadmapCloud uplink · roadmapSub-board ASub-board BOCPP 1.6J · any AC smart-charging charger
PowerLive dataRoadmapL1 · L2 · L3 measured per phase

Solutions

For sites where many cars share one supply.

The engine is the same everywhere. What changes is the job it does for you.

  • Apartments & strata

    Give owners charging on the supply the building already has, with per-bay energy records your strata manager can use for cost recovery.

  • Fleet & workshops

    Charge vehicles alongside hoists, compressors and welders, with no cloud in the loop and a Status grid on the depot wall.

  • Commercial & industrial

    Hold EV charging inside a kW demand cap on the incomer (metered voltage needed) and every switchboard limit beneath it, with the data kept on site.

  • Installers & consultants

    Commission in a 13-stage browser wizard, model the real switchboard tree, and design to documented fail-safe behaviour.

Fails safe, on purpose

Every failure has a documented answer.

Meters go quiet, chargers misbehave and links drop. Edge CSMS has a defined response to each, and none of them depends on the internet.

Load management sits on top of your protection, never instead of it. Your breakers remain the last line.

What happens when…

Site model · illustrative

Everything working

The site meter reports every second, and every 10 seconds Edge CSMS shares the capacity that is left across the cars that are charging. Pick a failure to see what the site does.

How Edge CSMS handles failure

Open at every layer

No lock-in at the charger, the meter or the data.

Edge CSMS uses open protocols at every boundary, so you choose the hardware and keep the records.

01 · Chargers

Your chargers aren't ours.

  • Any AC charger that implements OCPP 1.6J smart charging, single- or three-phase.
  • Unknown chargers wait in Pending until an operator approves them.
  • Leave whenever you like: point the chargers at another CSMS.
  • No published compatibility list yet. Ask us about your model.
02 · Meters

Read the meter you choose.

  • Algodue UPM209: built-in preset over Modbus-TCP, validated against an emulated meter so far.
  • Algodue UPM309 and any other Modbus-TCP meter, through a configurable register map.
  • Eastron SDM630: built-in preset. Shelly Pro 3EM: over MQTT.
  • Rogowski coils wrap existing cables, which suits retrofits in live switchrooms.
03 · Data out

Your data stays on your premises.

  • Session records (kWh, RFID tag, charger, bay) exported to CSV.
  • Alarm webhooks (JSON) to your service desk.
  • A REST API with self-service API keys.
  • On the roadmap: OCPP 2.0.1 and a Modbus-TCP server for your BMS.

Operator console

The whole site, at a glance.

Served by the box to any browser on the site network: per-phase headroom for every board, chargers, meters, alarms, sessions with CSV export, a topology editor, and a Status grid for the depot wall.

See Edge CSMS
Operator console · dashboard
Edge CSMS dashboard: allocated current on L1, L2 and L3, incomer demand in kW, 120 of 120 chargers charging, and per-phase headroom bars for each switchboard
Status grid wall display: a tile for each of 120 chargers with its power in kW, one shown as paused

Status grid · wall display

Operator console — simulated 120-charger site.
Nohmad Go portable EV charger with its Type 2 connector

For drivers · on sale now

Nohmad Go, the portable charger you can buy today.

A 10 A portable EV charger for the car you already drive. Bluetooth and Wi-Fi, the EasyCharging app for your session history, and it keeps charging without Wi-Fi.

Power
Up to 2.3 kW (10 A)
Connector
Type 2
Supply lead
Fixed 10 A wall plug
Connectivity
Bluetooth + Wi-Fi
App
EasyCharging
Without Wi-Fi
Still charges
See Nohmad Go

Insights

Engineering notes for site owners.

All insights

Every site starts with its numbers.

Send us the supply rating, the number of bays and the chargers you have in mind. We'll tell you plainly whether Edge CSMS fits, and what you'd need on site.

Tell us about your siteEstimate your capacity