+CityxChange
Trondheim co-led an EU Horizon 2020 lighthouse consortium (with Limerick) to build Positive Energy Blocks — clusters of buildings that generate more energy over a year than they consume — and a local marketplace to trade the surplus and flexibility between them.
📊 Impact
Two Positive Energy Blocks were established at Brattora and Sluppen, spanning about 71,000 m2 of commercial buildings with roughly 4 GWh of local rooftop-PV and heat-pump generation. Both reached a net-positive annual balance: Brattora +230,857 kWh/yr (10% of its demand) and Sluppen +224,880 kWh/yr (5.2%). Aneos local energy and flexibility market linked 16 buildings and 29 assets and cut local peak load by about 6% (all figures consortium/operator-reported; no independent evaluation).
📖 Terms in this entry: Fuel cell · Microgrid · Smart grid
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📎 Cite this project
1001 Smart Cities (2026). “+CityxChange” — Trondheim, Norway. The Smart City Atlas. https://1001smartcities.org/projects/trondheim-cityxchange/ (last verified 2026-07-30). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.