Fronius MCP

Name: Fronius MCP
Author: flowiesner

by flowiesnerversion 0.1.2i★ –iRuns on your computer

Registry nameio.github.flowiesner/fronius-mcp

Install

Overview

Description from the maker (original English)

Real-time Fronius inverter data in Claude — PV, battery, grid and smart meter via local Solar API.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "fronius": {
      "command": "uvx",
      "args": [
        "fronius-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add fronius -- uvx fronius-mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "fronius": {
      "command": "uvx",
      "args": [
        "fronius-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "fronius": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "fronius-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account flowiesner, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32727 servers in this category
Published to the registry more recently than 7% of the other 32727 servers in this category
Basic checks equal to or better than 100% of the other 32727 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Fronius MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.2) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Foliosio

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Remote Desktop Commander

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Runs in the cloud★ 211Updated 2 days ago

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Foliosio

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Read your support inbox, tag conversations and save draft replies from your AI agent. Never sends.

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

fronius-mcp

Real-time solar data from your Fronius inverter, directly in Claude.

Ask things like:

*"How much solar power am I generating right now?"*

*"What's my battery charge level?"*

*"Am I currently importing or exporting to the grid?"*

*"How much energy did I produce this year?"*

*"What can you do with my solar system?"*

*"Analyse my photovoltaics for me."*

Connects to the Fronius Solar API v1 directly on your local network — no cloud account, no subscription, no data leaving your home.

How it works

fronius-mcp is a Model Context Protocol (MCP) server. MCP is an open standard that lets AI assistants like Claude connect to external tools and data sources. Once configured, Claude can call your inverter's local API in real time — whenever you ask a question about your solar system, Claude fetches live data and answers based on what's actually happening right now.

Requirements

A Fronius inverter on your local network with the Solar API (JSON API) enabled
Claude Desktop
uv — a fast Python package manager (one-line install)

Setup

1. Install uv

uv is a fast Python package manager used to run fronius-mcp without a permanent install.

macOS / Linux:

curl -LsSf https://astral.sh/uv/install.sh | sh

Windows (PowerShell):

irm https://astral.sh/uv/install.ps1 | iex

Restart your terminal after installing.

2. Add to Claude Desktop

Open your claude_desktop_config.json and add the fronius block inside mcpServers:

"mcpServers": { "fronius": { "command": "uvx", "args": ["fronius-mcp"] } } }

Config file location:

Platform	Path
macOS	`~/Library/Application Support/Claude/claude_desktop_config.json`
Windows	`%APPDATA%\Claude\claude_desktop_config.json`
Windows (Store app)	`%LOCALAPPDATA%\Packages\Claude_pzs8sxrjxfjjc\LocalCache\Roaming\Claude\claude_desktop_config.json`

Tip: If the mcpServers key already exists, just add the fronius block inside it — don't create a second mcpServers.

3. Restart Claude Desktop

Close and reopen Claude Desktop so it picks up the new server config.

4. Configure your inverter

In a new Claude conversation, say:

*"Configure my Fronius inverter at 192.168.178.35"*

Claude will save your inverter's IP and confirm the connection. This is a one-time step — the address is stored in ~/.fronius-mcp.json and persists across restarts.

Don't know your inverter's IP? Tell Claude: *"I want to configure my Fronius inverter but I don't know the IP."* Claude will walk you through finding it via your router, Fronius Solar.web, or the inverter's touch display — and how to enable the Solar API in the inverter's web interface if you haven't done that yet.

What you can ask

Once set up, just talk to Claude naturally. Some examples:

*"What's my current solar output?"* — live PV generation in watts
*"How self-sufficient am I right now?"* — autonomy and self-consumption percentages
*"Is my battery charging or discharging?"* — battery power flow and state of charge
*"How much have I fed into the grid today?"* — energy totals from the smart meter
*"What devices are connected to my inverter?"* — full system topology
*"Give me a full overview of my solar system."* — Claude combines all data sources into a summary

Tools

Tool	What it does
`configure_inverter`	Set your inverter's IP address — run this once on first setup
`solar_power_flow`	PV generation, grid exchange, house load, battery power, autonomy, energy totals
`solar_meter`	Grid power per phase, cumulative energy in/out, voltage, current, frequency
`solar_battery`	State of charge, voltage, current, temperature, capacity, status
`solar_devices`	All connected devices with type, bus index, and serial number

Compatible Hardware

Developed and tested on:

Fronius Symo GEN24 10.0 Plus
BYD Battery-Box Premium HV (13.824 kWh)
Fronius Smart Meter (grid feed-in point, 3-phase)

Other Fronius inverters with Solar API v1 support should work. Some API endpoints behave differently across models — if something doesn't work on your hardware, open an issue.

License

Apache 2.0 — see LICENSE.

Fronius MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Foliosio

README from the maker

fronius-mcp

How it works

Requirements

Setup

1. Install uv

2. Add to Claude Desktop

3. Restart Claude Desktop

4. Configure your inverter

What you can ask

Tools

Compatible Hardware

License