---
title: "OpenNEM"
description: "OpenNEM is a Marketplace integration for Home Assistant. It has 162 installs sharing analytics, needs the vendor's cloud and was last updated May 18, 2025."
canonical: "https://vulpo.app/integrations/marketplace/bacco007-sensor-opennem"
url: "https://vulpo.app/integrations/marketplace/bacco007-sensor-opennem.md"
last-updated: "2026-10-23"
version: "1.4"
---

# OpenNEM

> OpenNEM is a Marketplace integration for Home Assistant. It has 162 installs sharing analytics, needs the vendor's cloud and was last updated May 18, 2025.

OpenNEM is a Marketplace integration that adds sensors with National Electricity Market data from OpenElectricity. The data comes from the vendor's cloud, and the region to monitor is chosen in the setup and can be changed later in the options. Each sensor reports only the energy sources that apply to its region. A generation versus demand attribute is calculated as the region's generation, excluding imports, minus its demand, so a negative value means generation does not meet demand. The authenticated API needed for flow between regions is not supported. Setup is done in the UI, and a diagnostics file can be downloaded for bug reports.

Automatic summary of the README and code of bacco007/sensor.opennem. Something wrong, or are you the maintainer and want your own text here? [Get in touch](https://vulpo.app/contact)

[Open in My Home Assistant](https://my.home-assistant.io/redirect/hacs_repository/?owner=bacco007&repository=sensor.opennem&category=integration)

On Home Assistant 2026.11 or newer? [Open it in the Marketplace](https://my.home-assistant.io/redirect/marketplace_repository/?owner=bacco007&repository=sensor.opennem&category=integration)

## Supports

- **Uses the vendor's cloud**: Needs an internet connection and an account with the vendor.
- **From the Marketplace**: Installed through the Marketplace, formerly HACS.

## Setting it up

Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services.

### OpenNEM

- **Choose Region to Monitor**

### After setup

- **Choose Region to Monitor**

Texts from the code of [bacco007/sensor.opennem](https://github.com/bacco007/sensor.opennem).

## Troubleshooting

- **Diagnostics**: Downloads a diagnostics file to attach to a bug report.

## At a glance

- Kind: Marketplace integration
- Category: [Sensors](https://vulpo.app/integrations/category/sensors.md)
- Number: 162 installs sharing analytics; 19 GitHub stars
- Connection: Needs the vendor's cloud
- Upkeep: No update in 6 to 18 months
- Needs: Needs the Marketplace (HACS on 2026.10 and older)
- Latest version: 2025.05.2, last updated May 18, 2025
- Domain: `opennem`
- Source: <https://github.com/bacco007/sensor.opennem>
- Issues: <https://github.com/bacco007/sensor.opennem/issues>

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Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about)

Last updated 2026-10-23. Source: https://vulpo.app/integrations/marketplace/bacco007-sensor-opennem

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