Trondheim, Norways third-largest municipality and the historic seat of the medieval Norwegian kingdom around the Nidaros Cathedral, sits where the Nidelva meets the Trondheimsfjord. Home to NTNU and SINTEF, Scandinavias largest concentration of technology research, the city has used that base to co-lead EU energy-transition pilots — most prominently the +CityxChange lighthouse project and its two Positive Energy Blocks.

The atlas documents 1 project in Trondheim: 1 with a documented success. The entry carries an evidence grade — the strongest here is official (1 entry) — and links its sources.

All 1 project in Trondheim

✔ Every published entry is checked against the public sources it cites before publication.

Outcome: 1 succeeded — Evidence: 1 official

Deeper reads

Where Trondheim appears in the atlas's own analysis.

Closest comparisons

One city the atlas reads next to Trondheim — the reason first, then the entries it rests on. Chosen by hand from the Trondheim threads below, not counted out of them.

1. 🇫🇷 Lyon

   Two EU lighthouse energy districts, opposite starting points: Lyon Confluence retrofitted an existing quarter until its buildings used half the energy; Trondheim's +CityxChange built new blocks that generate more than they use over a year.

   • +CityxChange ↔ Lyon Confluence
   • +CityxChange ↔ Confluence Smarter Together Energy Grid

Show 3 further city threadsShow fewer

Every editorial link from Trondheim's entries into another city, strongest first. Each one is a statement about two projects, not about two cities — the three above are the ones the atlas is willing to make at city level.

• 🇸🇪 Stockholm: GrowSmarter Two EU lighthouse energy districts: GrowSmarter retrofitted Stockholms Arsta, +CityxChange built Trondheims positive-energy blocks.
• 🇩🇰 Copenhagen: EnergyLab Nordhavn Smart Energy District Completed energy-district pilots trading local flexibility: EnergyLab Nordhavn 2015-2019, Trondheims blocks to 2023.
• 🇫🇷 Lyon: Lyon Confluence EU smart-community energy districts: Lyon Confluence and Trondheims +CityxChange both built local energy systems.

Official strategy and sources

📎 Cite this city

1001 Smart Cities (2026). “Smart-city projects in Trondheim, Norway.” The Smart City Atlas. https://1001smartcities.org/cities/trondheim/ (last verified 2026-08-27). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

🔔 Follow changes to Trondheim’s entries (RSS)