1001 Smart Cities
🇩🇰 Copenhagen

City Data Exchange

🤖 AI-generated summary · ◆ 17 sourced claims · 🔎 Last verified

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.

17 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 11 Oct 2026 8 claims added. What changed →

A marketplace where the city, companies and citizens would buy and sell urban data. It launched in May 2016, never attracted enough providers or buyers, and the partners closed it in 2018.

Outcome🪦 Failed
Evidence🏛️ Official
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 →
Run byCity of Copenhagen, Capital Region of Denmark & Hitachi Consulting
Scale🗺️ Regional
FundingCity of Copenhagen and Capital Region of Denmark financed the platform; Hitachi Consulting invested as the winning tender partner.

Part of 1001 Smart Cities — 1,216 documented projects · 🏙️ 9 more in Copenhagen · 📊 Open data guide · 📡 Data & IoT projects

Copenhagen, the Capital Region of Denmark and Hitachi Consulting ran the City Data Exchange, a marketplace to buy, sell and share anonymised public and private urban data — traffic, weather and energy use — launched May 2016. The pilot struggled to attract enough data providers and buyers, and partners closed it in 2018, citing weak financial sustainability.

Completed 📅 2016–2018

📊 Impact

No market formed. By the end, 25 datasets on the exchange carried a price against 134 published openly, and the largest publisher by far was Hitachi Consulting itself, with 131 datasets. Where data did change hands, deals were negotiated case by case between buyer and seller, so the marketplace platform itself became obsolete; the exchange was discontinued after the contract with Hitachi ended. The project's 2018 evaluation drew on about 1,000 people who had dealt with it.

🎓 Lesson

A data marketplace built before anyone has a problem to solve stays empty. Copenhagen's own evaluation recommends starting with the use case, and the city's former Smart City Program Director said that for cities the problem is not getting data but collecting the garbage or controlling the traffic: "I guess we lost sight of the problem."

📡 Data & IoTOpen data

Sources

↗ Copenhagen Solutions Lab — City Data ExchangeOperator retrospective: a public–private collaboration of the Municipality of Copenhagen, the Capital Region and Hitachi; decision to invest 2013, tender 2015, launch at the Town Hall in May 2016; a pilot project that ended in 2018; recommendations from about 1,000 people the project dealt with, starting with 'Start with the use case'.
↗ Cities Today — Cities want more from their data, including moneyPublished 15 September 2021 · updated 16 September 2021Independent trade press; on-record reasons for the 2018 shutdown from the former Smart City Program Director.
↗ Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driverPublished 24 May 2016Confirms May 2016 launch, partner list including Capital Region and CLEAN.
↗ Greater Manchester Combined Authority — Case Study: Copenhagen City Data ExchangeAnother public authority's four-page case study, drawing on the exchange's own 2018 evaluation. It says the exchange was discontinued in 2018 for lack of demand, after the end of the contract with Hitachi; that 25 datasets were priced against 134 published openly; that Hitachi Consulting was by far the largest publisher (131 datasets); and that sales arranged case by case made the platform itself obsolete. A secondary summary of the project's own evaluation, not an audit of it.
↗ Leigh Dodds — First Impressions of Copenhagen's City Data ExchangePublished 21 May 2016An open-data practitioner's hands-on review in the platform's first week: 56 datasets, all of them free, most uploaded by Hitachi and copied from Copenhagen's own open-data portal. A personal expert blog rather than press or evaluation.

📅 How old is the evidence?

Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: 2016–2018. 3 of 5 sources carry a publication date, from 21 May 2016 to 15 September 2021.

When the sources were published

  1. Leigh Dodds (personal blog) · communityLeigh Dodds — First Impressions of Copenhagen's City Data Exchange
  2. Invest in Denmark (Ministry of Foreign Affairs of Denmark) · national governmentInvest in Denmark — World's first city data marketplace in Copenhagen as smart city driver
  3. Cities Today · pressCities Today — Cities want more from their data, including money · updated 16 September 2021

Every source, with links ↑

What happened to this record

  1. Entered the record
  2. 8 claims added
  3. Sources last read

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 17 claims with their sources · the forensic record

Evidence file · public beta 17 addressable claims, 5 source dossiers, one permanent baseline. The file 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 17

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.

Claim 1 clm-8e87be9d94efec4d descriptive
Copenhagen, the Capital Region of Denmark and Hitachi Consulting ran the City Data Exchange
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Copenhagen Solutions Lab, the city unit that coordinated the project, calls the City Data Exchange "a private/public collaboration between the Municipality of Copenhagen, The Capital Region of Denmark, and Hitachi", and adds that "Hitachi Consulting won the tender and invested, and worked with the Municipality of Copenhagen, and the Capital Region of Denmark to establish an organization and a technical platform." Invest in Denmark names the same three parties and states that "The City of Copenhagen and the Capital Region of Denmark are financing the project."
Caveat
The partnership was wider than the three parties named here: Invest in Denmark also lists the Danish cleantech organisation CLEAN and "a consortium of partners".

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
  2. Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driver
Claim 2 clm-50574426641f493e descriptive
a marketplace to buy, sell and share
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The operator page says the project "examined purchasing, selling, and sharing a broad range of data types between all kinds of users in a city". Invest in Denmark quotes CDE Copenhagen Director Peter Bjørn Larsen: "The City Data Exchange is a market place where you can buy and sell data (some will also be free of charge)."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
  2. Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driver
Claim 3 clm-bba0145534ec7f30 descriptive
anonymised public and private urban data
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Cities Today writes that "The platform facilitated the exchange of public and private data, including options for buying and selling", and that "Although data was aggregated and anonymised, privacy, public perception and competitive considerations also made providers hesitant." Invest in Denmark describes the exchange as "providing both public and private data from the metropole".
Caveat
Anonymisation is described only in passing, and in a retrospective written years after the platform closed; neither source sets out what was anonymised or how.

Sources carrying this claim

  1. Cities Today — Cities want more from their data, including money
  2. Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driver
Claim 4 clm-6da980769adb49a2 descriptive
traffic, weather and energy use
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Invest in Denmark says the data "will enable new knowledge about e.g. traffic patterns and citizens' energy consumption", that the team "has already found 65 sources of open data on Copenhagen - everything from demographics to weather and crime statistics", and that combining these enables analytics "to improve areas such as green infrastructure planning, traffic management and energy usage". The Greater Manchester case study lists the datasets actually traded: "the frequency of home break-ins, traffic jams, detailed meteorological data, and residents' electricity usage".
Caveat
The source names traffic, weather and energy. Parking is named by none of the entry's sources.

Sources carrying this claim

  1. Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driver
  2. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 5 clm-09da4a44689f48ab quantitative
launched May 2016
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The operator page dates the public opening: "Since May 2015, and especially after the launch at the Town Hall in May 2016, the CDE team has gathered a lot of knowledge." Invest in Denmark's article, itself dated 24 May 2016, reports that "In partnership with Hitachi, Copenhagen has launched the world's first marketplace for city data."
Caveat
May 2016 is the public launch, not the start of the work: the same operator page dates the decision to invest to 2013, the tender to 2015, and Hitachi Consulting's start on the platform to May 2015.

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
  2. Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driver
Claim 6 clm-99931a5503e3b37f descriptive
The pilot
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The operator's own retrospective uses the same word: "The City Data Exchange was a pilot project and ended in 2018."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
Claim 7 clm-26a7a31638007c76 descriptive
struggled to attract enough data providers and buyers
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Cities Today carries the struggle in the words of the city's former Smart City Program Director, but speaks of "data providers and users" rather than paying buyers. The Greater Manchester case study carries the narrower half: "CDE failed to reach the critical mass of datasets and data purchasers needed to make the model sustainable", and counts 25 datasets sold priced against 134 published openly. Leigh Dodds counted the supply side in the platform's first week: "As of today 21st May there are 56 datasets on the site. All of them are free."
Caveat
The source says "users", not "buyers", and reports no figure for how many of them paid for data.

Sources carrying this claim

  1. Cities Today — Cities want more from their data, including money
  2. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
  3. Leigh Dodds — First Impressions of Copenhagen's City Data Exchange
Claim 8 clm-9b0944546c01696c quantitative
partners closed it in 2018
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The operator page states that "The City Data Exchange was a pilot project and ended in 2018." Cities Today, writing about the 2016 launch, adds: "Two years later, the initiative was disbanded after the partners struggled to get enough data providers and users on the platform". The Greater Manchester case study: "Whilst CDE was discontinued in 2018 due to a lack of demand", and "CDE was discontinued after the end of the contract with Hitachi."
Caveat
Both sources give the year only. Neither records a closing date, a decision by the partners, or who announced it.

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
  2. Cities Today — Cities want more from their data, including money
  3. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 9 clm-c1ea956a184c96ce descriptive
citing weak financial sustainability
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Cities Today names failure to make the platform pay as one of the reasons for the shutdown: the initiative was disbanded after the partners struggled to get providers and users "and to make it financially sustainable". The article rests on an interview with Marius Sylvestersen, "who until recently was Smart City Program Director for the City of Copenhagen".
Caveat
This is the trade press's account, published three years after the shutdown. No statement by the partners giving this reason is on record, and the operator's own retrospective gives no reason for the end at all.

Sources carrying this claim

  1. Cities Today — Cities want more from their data, including money
Claim 10 clm-ae594d1eb22dad5e descriptive
No market formed.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Greater Manchester case study: "CDE failed to reach the critical mass of datasets and data purchasers needed to make the model sustainable."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 11 clm-4dbe76b5817fe7fa quantitative
By the end, 25 datasets on the exchange carried a price against 134 published openly
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The case study: "Not all datasets on CDE were for sale, however – while 25 were sold priced, 134 were published openly."
Caveat
"Sold priced" is ambiguous: it most plausibly means listed with a price, not that 25 sales took place. The case study gives no sales count or revenue.

Sources carrying this claim

  1. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 12 clm-0b6b74c063b40655 quantitative
the largest publisher by far was Hitachi Consulting itself, with 131 datasets
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The case study: "The largest publisher by far was Hitachi Consulting (131 datasets), followed by the online bookseller saxo.com (8 datasets)." In the first week Leigh Dodds found that the majority of datasets "seem to have been uploaded by Hitachi and are copies of datasets from" Copenhagen's open data portal.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
  2. Leigh Dodds — First Impressions of Copenhagen's City Data Exchange
Claim 13 clm-e259d2635a49a5bf descriptive
Where data did change hands, deals were negotiated case by case between buyer and seller, so the marketplace platform itself became obsolete
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The case study, listing reasons from the CDE evaluation report: "As dataset sales were usually arranged on a case-by-case basis through negotiation on parameters between buyers and sellers, the marketplace platform itself became obsolete."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 14 clm-5715fadd1f70b566 descriptive
the exchange was discontinued after the contract with Hitachi ended
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The case study: "Ultimately, CDE was discontinued after the end of the contract with Hitachi."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 15 clm-3370463278d90ca8 quantitative
The project's 2018 evaluation drew on about 1,000 people who had dealt with it.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The operator page bases its recommendations "on the insights from approximately 1000 people that the CDE has been in contact with"; the case study says the 2018 evaluation report "pulled together responses from 1,000 participants who had interacted with the CDE".
Caveat
The evaluation paper itself is available from the city on request; it was not read for this entry.

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
  2. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 16 clm-730a7a24bc84e2aa descriptive
Copenhagen's own evaluation recommends starting with the use case
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The operator page lists the first recommendation as "Start with the use case, as it is key to engage the data community that will use the data"; the case study's first recommendation is to "Establish solid use cases".
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Copenhagen Solutions Lab — City Data Exchange
  2. Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange
Claim 17 clm-c856e4fe9bf1c45b descriptive
the city's former Smart City Program Director said that for cities the problem is not getting data but collecting the garbage or controlling the traffic: "I guess we lost sight of the problem."
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Cities Today quotes Marius Sylvestersen: "But for cities, the problem is not to get data, or to get innovation going, it's to make certain that we collect our garbage or that we control the traffic. I guess we lost sight of the problem."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Cities Today — Cities want more from their data, including money
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.

unreviewed Revision 2026-10-11-deep-run effective 2026-10-11 · created 2026-10-11

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:baf49427a6ef81ee71c9f78154fb4aefb38f0e12c6469bc11ffed42bb67a1fe5
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
17
of 17 claims mapped
5
source dossiers
3
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
City of Copenhagen, Capital Region of Denmark & Hitachi Consulting
Actor types
city-government, regional-government, private
Funding model
mixed
Funding description
City of Copenhagen and Capital Region of Denmark financed the platform; Hitachi Consulting invested as the winning tender partner.
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

5 source dossiers

Copenhagen Solutions Lab — City Data Exchange cphsolutionslab.kk.dk · 7 linked claims

Open original source ↗

Stable source ID
src-21cca233bce14699
Publisher
Name not classified · cphsolutionslab.kk.dk
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Operator retrospective: a public–private collaboration of the Municipality of Copenhagen, the Capital Region and Hitachi; decision to invest 2013, tender 2015, launch at the Town Hall in May 2016; a pilot project that ended in 2018; recommendations from about 1,000 people the project dealt with, starting with 'Start with the use case'.

Descriptive only — not page/paragraph exact
Claims linked
Cities Today — Cities want more from their data, including money cities-today.com · 5 linked claims

Open original source ↗

Stable source ID
src-4d022a67a161de55
Publisher
Name not classified · cities-today.com
Type / language
web-page · language not classified
Published
2021-09-15
Updated
2021-09-16
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Independent trade press; on-record reasons for the 2018 shutdown from the former Smart City Program Director.

Descriptive only — not page/paragraph exact
Claims linked
Invest in Denmark — World's first city data marketplace in Copenhagen as smart city driver investindk.com · 5 linked claims

Open original source ↗

Stable source ID
src-a5386648158c08c6
Publisher
Name not classified · investindk.com
Type / language
web-page · language not classified
Published
2016-05-24
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Confirms May 2016 launch, partner list including Capital Region and CLEAN.

Descriptive only — not page/paragraph exact
Claims linked
Greater Manchester Combined Authority — Case Study: Copenhagen City Data Exchange greatermanchester-ca.gov.uk · 10 linked claims

Open original source ↗

Stable source ID
src-65a7a9e87b90d171
Publisher
Name not classified · greatermanchester-ca.gov.uk
Type / language
pdf · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Another public authority's four-page case study, drawing on the exchange's own 2018 evaluation. It says the exchange was discontinued in 2018 for lack of demand, after the end of the contract with Hitachi; that 25 datasets were priced against 134 published openly; that Hitachi Consulting was by far the largest publisher (131 datasets); and that sales arranged case by case made the platform itself obsolete. A secondary summary of the project's own evaluation, not an audit of it.

Descriptive only — not page/paragraph exact
Claims linked
Leigh Dodds — First Impressions of Copenhagen's City Data Exchange blog.ldodds.com · 2 linked claims

Open original source ↗

Stable source ID
src-11af8b6801c4305f
Publisher
Name not classified · blog.ldodds.com
Type / language
web-page · language not classified
Published
2016-05-21
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

An open-data practitioner's hands-on review in the platform's first week: 56 datasets, all of them free, most uploaded by Hitachi and copied from Copenhagen's own open-data portal. A personal expert blog rather than press or evaluation.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this file
  • 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.

Continue exploring

Compare this project

🇨🇳 Shanghai Data Exchange · Shanghai The idea survived elsewhere: Copenhagen's marketplace closed in 2018 for lack of buyers; Shanghai opened a state-backed exchange in 2021. 🇨🇳 Beijing's Financial Public Data Zone · Beijing Beijing's version kept the raw data inside a municipal zone and sold models to banks - and unlike this marketplace, it lasted. 🇮🇳 Delhi Smog Towers, Connaught Place & Anand Vihar · New Delhi Another flagship shut rather than scaled: Delhi's 20-crore smog tower was defunded in 2023 and stood idle through 2025.

Explore the wider context

🪦 Why smart cities fail💥 Failed & Instructive📖 Urban data platform (UDP)📖 Building performance standard (BPS)📖 GTFS (General Transit Feed Specification)
📎 Cite this project

1001 Smart Cities (2026). “City Data Exchange” — Copenhagen, Denmark. The Smart City Atlas. https://1001smartcities.org/projects/copenhagen-city-data-exchange/ (last verified 2026-10-11). Data: CC BY 4.0.

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

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