Join an open data project for real-time monitoring of grid frequency and voltage quality across Europe.
What is PQopen?
PQopen is an open data initiative building a distributed, cross-border monitoring system for the European electricity grid. The focus is on long-term, high-resolution measurements of grid frequency as well as power quality using affordable, open hardware devices.
- High-resolution data (cycle-by-cycle frequency and voltage rms)
- Fully open-source: hardware, software & data
- Ideal for research, education, and public interest
- Built for resilience and scientific collaboration
Active Measurement Locations
| Location name | Synchronous Area | Data provider |
|---|---|---|
| AT/Graz | Central Europe | PQopen |
| AT/Vienna | Central Europe | Beckhoff Automation |
| CH/Solothurn | Central Europe | PQopen |
| DE/Berlin | Central Europe | PQopen |
| DE/Cham | Central Europe | PQopen |
| DE/Eisenberg | Central Europe | PQopen |
| DE/Essen | Central Europe | PQopen |
| DE/Luebeck | Central Europe | Beckhoff Automation |
| DE/Stade | Central Europe | PQopen |
| ES/Mondragon | Central Europe | PQopen |
| ES/Pamplona | Central Europe | PQopen |
| FI/Helsinki | Nordic | Beckhoff Automation |
| LT/Kaunas | Central Europe | Beckhoff Automation |
| ME/Podgorica | Central Europe | PQopen |
| NL/Amersfoort | Central Europe | PQopen |
| NL/Arnhem | Central Europe | PQopen |
| NL/Eindhoven | Central Europe | PQopen |
| NL/Groningen (in preparation) | Central Europe | PQopen |
| NL/Haarlem | Central Europe | PQopen |
| NL/Venlo | Central Europe | PQopen |
| SE/Malmoe | Nordic | Beckhoff Automation |
How You Can Participate
Hosting a PQopen device is easy — and makes a real contribution to transparent energy monitoring.
Here’s how it works:
- Receive a pre-configured PQopen measurement device after positive evaluation of your application.
- Install the device in your switchboard and connect it to your Wi-Fi.
- The device securely uploads anonymized data to the PQopen server.
- You can access your local data via private dashboard access.
What you need:
- Grid connection (preferrabley 3-phase) and stable Wi-Fi
- Willingness and ability to install and occasionally check the device
- (Optional) Small DC-UPS for power outages
What you get:
- Access to your own local power quality data
- Contribution to an open pan-European dataset
- Optional private monitoring of current and power (data not published)
Technical Highlights
- Frequency: Cycle-by-cycle values
- Voltage: Cycle-by-Cycle RMS for one phase, RMS, THD, Flicker (1-min and 10-min aggregates)
- Optional: Current and power (local access only, not published)
- No personal data is collected – VPN-secured connection
- Compatible with DC-UPS for blackout resilience
Roadmap 2026
| Month | Milestone | Accomplished |
|---|---|---|
| February | First 3rd party measurement data (DE/Luebeck) | ✅ |
| March | 1 additional device in a new country (NL/Amersfoort) | ✅ |
| April | Additional 3rd party measurement data (AT/Vienna) | ✅ |
| May | Measurement data (3rd party) from NORDIC grid | ✅ |
| June | Measurement in Montenegro is active | ✅ |
| July | PQopen has it’s first birthday! | ✅ |
| August | Measurement location in Latvia |
Roadmap 2025
| Month | Milestone | Accomplished |
|---|---|---|
| May | Finalizing prototypes, call for testers | ✅ |
| Late June | First devices shipped | ✅ |
| July–October | 2 additional devices shipped per month | ☑️ (partly) |
| October | Goal: 10 devices in 5+ countries | ❎ 4 countries, 7 devices |
Ready to Join PQopen?
Help build a resilient, transparent power monitoring network in Europe.
For questions or collaboration:
📧 Email: info@pqopen.com
🔗 Codeberg: https://codeberg.org/DaqOpen
🔗 Open Data: https://www.pqopen.com
Data & Privacy
- No energy usage data is collected (unless explicitly enabled)
- All data is encrypted and securely transmitted via MQTT over TLS and VPN
- Open access to anonymized frequency & voltage data