+CityxChange
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
5 sourced claims on this page, none individually verified yet — turn on “Sources in the text” to see each one.
How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page
✎ Corrected 27 Aug 2026 Publication date recorded for 4 sources. What changed →
Two blocks of Trondheim buildings make more energy over a year than they use — by 10% at Brattora, 5.2% at Sluppen. Every figure is the consortium's own; there was no independent evaluation.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ Trondheim city profile · 🔌 Smart grid & energy guide · ⚡ Energy projects
📊 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).
🎓 Lesson
A Positive Energy Block is an annual balance, not a state of independence. Brattora is positive by 10% and Sluppen by 5.2% *over a year*: both still draw from the grid on dark winter afternoons and push into it in summer, and the grid is what makes the arithmetic work. The number describes bookkeeping across twelve months, not a building that stands alone. Every figure here is the consortium's own — the EU project page, the project's own posts — and no independent evaluation of the blocks or the market is cited anywhere. The question a demonstrator exists to answer is what happens afterwards, and the sourcing stops at the finish line: the project ended in October 2023 with EUR 20 million spent, and nothing published says whether the blocks stayed net-positive or whether Aneo's local market kept clearing once the funding did not.
Sources
Show your work What this page rests on and what it can’t tell you · all 5 claims with their sources · the forensic record
Evidence Passport · public beta 5 addressable claims, 4 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 5
The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-2fbc5bab16f64d50
quantitative
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
Sources carrying this claim
clm-97f46ef2e521259b
quantitative
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
Sources carrying this claim
clm-c2f649926465d9be
quantitative
Both reached a net-positive annual balance: Brattora +230,857 kWh/yr (10% of its demand) and Sluppen +224,880 kWh/yr (5.2%)
Sources carrying this claim
clm-3b8cb1e2643f3af3
quantitative
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)
Sources carrying this claim
clm-1d9a81d760c24019
quantitative
the project ended in October 2023 with EUR 20 million spent
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:332b836aa58487f1e571b2ea0a05d058112d38ce18145e2774903cc5781607ab
- 5
- of 5 claims mapped
- 4
- source dossiers
- 2
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- NTNU (project coordinator); Aneo (formerly Tronderenergi), local energy and flexibility market
- Actor types
- research, utility
- Funding model
- grant
- Funding description
- EU Horizon 2020 (Smart Cities & Communities lighthouse programme; ~EUR20m consortium-wide)
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
4 source dossiers
Positive City ExChange — CORDIS fact sheet (EU)
- Stable source ID
src-5afcb3629129391b- Publisher
- Name not classified · cordis.europa.eu
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- 2025-10-28
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Official EU project record: 1 November 2018 to 31 October 2023, EUR 19,999,996 of Horizon 2020 funding, coordinated by NTNU. The page carries no publication date of its own — the only timestamp it serves is the day it was last regenerated. A standing project record: the fact sheet carries no publication date, only a last update of 28 October 2025.
- Claims linked
+CityxChange Trondheim — Smart Cities Marketplace (EU)
- Stable source ID
src-039cc3862c4463da- Publisher
- Name not classified · smart-cities-marketplace.ec.europa.eu
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
EU project page: 71,000 m2 of commercial buildings, 4 GWh local PV/heat-pump production. No publication date is recorded: the page did not answer when this entry was checked.
- Claims linked
Trondheim has established two Positive Energy Blocks (operator)
- Stable source ID
src-89ae523278ae1282- Publisher
- Name not classified · cityxchange.eu
- Type / language
- web-page · language not classified
- Published
- 2022-11-22
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Positive annual balances: Brattora +230,857 kWh/yr, Sluppen +224,880 kWh/yr.
- Claims linked
Trondheims local energy and flexibility market (operator)
- Stable source ID
src-e46c0cff34f965c0- Publisher
- Name not classified · cityxchange.eu
- Type / language
- web-page · language not classified
- Published
- 2023-10-11
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-27
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Aneo-operated market; ~6% local peak-load reduction, 16 buildings / 29 assets.
- Claims linked
Known limits of this passport
- Publisher names and source languages have not yet been classified; domains are recorded without guessing.
- Existing source notes are descriptive locators, not page- or paragraph-exact citations.
- A missing archive, publication date or content hash is shown as null rather than inferred.
- The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.
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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 2026-08-27). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.