Integration docs

What you need to drive, read, install or host EdgeTech hardware. Plain HTML, and every page also as Markdown by adding .md to the URL, for engineers and for the agents they point at this site.

2025-04-09Modbus register map (EVSE-C-3x32A).md

Complete Modbus RTU register map of the Edge charge controller, firmware 2.10.17. Address, name, size, unit and meaning for every register; state and error tables; the two registers a third-party controller needs.

2026-09-22Load balancing behaviour.md

How Edge site controllers share the main connection between charge points. Per-second limits, the 6 A minimum and 8 A start threshold, failsafe on lost communication, site limit, solar modes and 1P/3P switching, with the configuration keys.

2026-09-22P1 telemetry.md

What the EVSE-SC-02 reads from the DSMR/ESMR 5 smart meter P1 port, with OBIS codes, and what it needs from the port electrically. Also the fields the Matter P1 power meter exposes.

2026-09-22MQTT topics and message schema.md

The device-plane MQTT contract between Edge site controllers and the platform. Topics per site, settings and config keys, the event types a site controller publishes, units, and the identifiers used.

2026-09-29REST API.md

Access to the site controllers through the EdgeTech backend over REST, for Home Assistant, DIY and integrations: status, control, schedules, solar modes, usage export. With a subscription. The public API surface, authentication and an OpenAPI file are being finalised.

2026-09-22evcc and Home Assistant.md

Driving an Edge charge controller from evcc with the official smartevse template, and what that gives you in Home Assistant, Homey and Google Home. Wiring, template parameters, phase switching.

2026-09-22Installation and wiring.md

Practical installation rules for Edge charge controllers and site controllers. Bus cable, addresses, jumpers, DC leakage wiring, CT clamps, P1 connection, and the checks after power-up.

2026-09-29Firmware release notes.md

Every site-controller and charge-controller release since the first production batch in March 2021, with what changed. Updates are installed over the air, for the site controller and, through it, the charge controller, with a subscription.

2026-09-22MCP server.md

An MCP (Model Context Protocol) server that gives coding agents and assistants EdgeTech product specifications, the standards status, and a compatibility check for a site. Runs locally over stdio or as a hosted HTTP endpoint.

2026-09-29Downloads.md

CE declarations, manuals, product briefs, wiring diagrams and brackets, in one indexed list. Everything here also exists as HTML on this site; the PDFs are a convenience, never the only source.

For agents

/llms.txt: every page with a one-line description.
/llms-full.txt: the whole site as one Markdown file.
/data/products.json, /data/standards.json: the same content as JSON.
MCP server: specs, standards status and a compatibility check as tools.

The charge controller's protocol is open: firmware, register map, brackets and wiring at github.com/edge-tech-eu/SmartEVSE.