1001 Smart Cities
🇪🇸 Barcelona

Decidim Participation Platform

🤖 AI-generated summary · ◆ 14 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.

14 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 14 Oct 2026 Outcome changed: succeeded → ongoing. What changed →

A city council wrote the code in February 2016. By 2022 Mexico City, Helsinki, New York and France's National Assembly had taken it up, among 400 instances in more than 20 countries.

Outcome🔄 Ongoing
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 byAjuntament de Barcelona (Barcelona City Council)
Scale🏙️ City-wide

Part of 1001 Smart Cities — 1,216 documented projects · 🏙️ 19 more in Barcelona · 🗳️ Citizen participation guide · 🏛️ Governance projects

Barcelona City Council put its own participation platform online in February 2016; the free-software project that grew out of it, Decidim, counted 400 instances in more than 20 countries by 2022, used by Mexico City, Helsinki, New York and France's National Assembly. Barcelona itself still runs its 2024-27 participatory budget on it, with 1,700+ resident proposals submitted for €30 million in district spending.

Live 📅 since 2016

📊 Impact

Barcelona City Council reports on its own decidim.barcelona platform that the participatory budget projects approved by residents were 25 % executed overall in April 2026 ("el grau d'execució global del conjunt de projectes aprovats ja se situa en el 25%"); its live monitoring page has since put the figure at 40.5 % across 76 actions. Self-reported by the city throughout, with no independent check. When it launched the second edition in 2024, the council put the first edition's execution at 82.2 %, without saying whether that counts projects or money.

🎓 Lesson

What residents can decide on a participation platform is bounded by the money and follow-through behind it: Barcelona announced €75 million for its first participatory budget in 2020, cut it to €30 million when the pandemic hit and kept €30 million for 2024-27, and some first-edition winners, such as a cycle lane on Plaça de Catalunya, were later dropped.

🏛️ GovernanceCitizen participation

Sources

↗ Decidim (project)Published 1 February 2022Official project blog: 400 instances, 20+ countries, named institutional users.
↗ Ajuntament de Barcelona (authority)City's live decidim.barcelona instance running the 2024-27 participatory budget process.
↗ Universitat Oberta de Catalunya (research)Published 20 June 2019UOC news item: Decidim won second prize for most innovative open-source software in the European Commission's 2019 Sharing & Reuse Awards; decidim.barcelona is the City Council's participatory-democracy platform, developed under a UOC–City Council agreement.
↗ Ajuntament de Barcelona — participatory budget monitoringThe city's live monitoring component for the 2024-27 participatory budget: a global execution level, a percentage per district and 76 individual actions, downloadable as CSV. It showed "Estat d'execució global 40,5 %" on 22 August 2026; the page is continuously updated and carries no publication date.
↗ Ajuntament de Barcelona — execution reaches 25%Published 4 April 2026Official post on the city's participation platform: the overall execution level of the approved 2024-27 projects stands at 25 %.
Show 4 more sourcesShow fewer
↗ Ajuntament de Barcelona — proposals submitted 2024-27The component that carries the submitted-proposal count itself: 1,727 proposals. The process landing page shows a larger, space-wide 2,454, which counts the 727 prioritised proposals a second time.
↗ Nació Digital — Barcelona again sets aside only €30 million for participatory budgets (7 October 2024)Reports that the first participatory budget, presented in February 2020, was announced at €75 million for one term, cut to €30 million across the ten districts after the pandemic, and that the second edition keeps €30 million; the residents' federation FAVB calls for more ambition.
↗ betevé — 76 projects win the second participatory budget (19 May 2025)76 projects won the second edition out of 239 put to the vote; 48,796 people voted against 39,433 in 2021; some first-edition winners were later dropped, such as a cycle lane on Plaça de Catalunya.
↗ Ajuntament de Barcelona — Ciutat Vella presentation of the second participatory budgetDistrict presentation launching the second edition with €30 million; gives the first edition in figures: about 70,000 participants, 1,982 initial projects, 76 chosen and '82,2% execució actual'.

📅 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: since 2016. 5 of 9 sources carry a publication date, from 20 June 2019 to 4 April 2026.

When the sources were published

  1. Universitat Oberta de Catalunya · researchUniversitat Oberta de Catalunya (research)
  2. Decidim Association · ngoDecidim (project)
  3. Nació Digital · pressNació Digital — Barcelona again sets aside only €30 million for participatory budgets (7 October 2024)
  4. betevé · pressbetevé — 76 projects win the second participatory budget (19 May 2025)
  5. Ajuntament de Barcelona · city governmentAjuntament de Barcelona — execution reaches 25%

Every source, with links ↑

What happened to this record

  1. Entered the record
  2. Outcome changed: succeeded → ongoing
  3. Sources last read

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 14 claims with their sources · the forensic record

Evidence file · public beta 14 addressable claims, 9 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 14

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-4b99f3fc3e5422ea quantitative
Barcelona City Council put its own participation platform online in February 2016
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Decidim project's own fifth-anniversary post states: "On 1 February 2017 decidim.org was born, the free and open source platform for participatory democracy, conceived and promoted by the Barcelona City Council." and "Exactly one year earlier, the first instance of decidim's software, Decidim.Barcelona, was born, which to this day is the largest". The UOC news item, from the university that co-develops the project, confirms the attribution: decidim.barcelona "is the digital platform for participatory democracy of the City Council of Barcelona".
Caveat
The source attaches February 2016 to Barcelona's own installation, not to the open-source project. Decidim dates decidim.org, the software project, to 1 February 2017 — a year later.

Sources carrying this claim

  1. Decidim (project)
  2. Universitat Oberta de Catalunya (research)
Claim 2 clm-939e9f95534b10d6 quantitative
counted 400 instances in more than 20 countries by 2022
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The project's post of 1 February 2022 says: "Five years have passed since its birth and there are already 400 instances worldwide, both in pre-production and in production. It has been implemented in more than 20 countries".
Caveat
The source counts 400 instances, not more than 400, and explicitly includes installations still in pre-production, so not all of them were in active use. The count describes the Decidim software worldwide, not Barcelona's own platform.

Sources carrying this claim

  1. Decidim (project)
Claim 3 clm-caafa2d95e93b4a5 descriptive
used by Mexico City, Helsinki, New York and France's National Assembly
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The same post names the adopters: "It has been implemented in more than 20 countries, by local governments and very diverse institutions such as the governments of Mexico City, Helsinki, New York, Kakogawa (Japan), the European Commission and the National Assembly of France, to name but a few."
Caveat
The list comes from the project's own anniversary post and records that these institutions run the software, not how much they use it or with what result.

Sources carrying this claim

  1. Decidim (project)
Claim 4 clm-4a133ba3af43e410 quantitative
Barcelona itself still runs its 2024-27 participatory budget on it
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The council's own instance hosts the live process "Pressupostos participatius 2024 - 2027", whose current phase is given as "Seguiment de l'execució dels projectes d'inversió" (monitoring the execution of the investment projects), running since 1 October 2025.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Ajuntament de Barcelona (authority)
Claim 5 clm-422dd349e53d0a1b quantitative
with 1,700+ resident proposals submitted
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The proposals component of the 2024-27 process states the count directly: 1,727 proposals.
Caveat
The process landing page shows 2,454 instead; that larger number counts the 727 prioritised proposals a second time, in a separate component.

Sources carrying this claim

  1. Ajuntament de Barcelona — proposals submitted 2024-27
Claim 6 clm-14cd5d5688b8e2c8 quantitative
for €30 million in district spending
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The process page states the amount: "30 milions d'euros per dur a terme projectes d'inversió proposats i triats directament per les veïnes i veïns de la ciutat" — 30 million euros for investment projects proposed and chosen directly by the city's residents, allocated across the ten districts.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Ajuntament de Barcelona (authority)
Claim 7 clm-fe5ef072255145fb quantitative
the participatory budget projects approved by residents were 25 % executed overall in April 2026
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
A post on the council's platform, dated 4 April 2026 and headed "Post oficial", reads: "Actualment, el grau d'execució global del conjunt de projectes aprovats ja se situa en el 25%" — the overall execution level of the approved projects currently stands at 25 %. The post places this in the edition that began in October 2024.
Caveat
This is a snapshot from April 2026. The monitoring section of the same platform now reports a global execution level of 40.5 %, so the figure belongs with a date beside it.

Sources carrying this claim

  1. Ajuntament de Barcelona — execution reaches 25%
Claim 8 clm-f3716a1de63784ff quantitative
its live monitoring page has since put the figure at 40.5 % across 76 actions
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The council's monitoring component for the 2024-27 budget showed a global execution status of 40.5 % across 76 actions when read on 22 August 2026; betevé confirms that 76 projects won the second edition.
Caveat
The page updates continuously and was not reachable for a re-read in October 2026, so the figure is dated to its August 2026 reading.

Sources carrying this claim

  1. Ajuntament de Barcelona — participatory budget monitoring
  2. betevé — 76 projects win the second participatory budget (19 May 2025)
Claim 9 clm-4ec136a48ef65640 descriptive
Self-reported by the city throughout
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Both figures are published by the council itself on its own participation platform: the 25 % in a post carrying the platform's "Post oficial" marker, the 40.5 % on the monitoring component. Neither names an outside body.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Ajuntament de Barcelona — execution reaches 25%
  2. Ajuntament de Barcelona — participatory budget monitoring
Claim 10 clm-fcf90b8174b5f9ca descriptive
with no independent check.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The execution figures come from the council's own post and monitoring page and are not attributed to any auditor or outside evaluator; no audit-office or independent assessment of the 2024-27 edition was found. (An absence has no passage to point to.)
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Ajuntament de Barcelona — execution reaches 25%
  2. Ajuntament de Barcelona — participatory budget monitoring
Claim 11 clm-3f2e111022bec8dd quantitative
the council put the first edition's execution at 82.2 %
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The district presentation launching the second edition lists the first edition in figures, including '82,2% execució actual'; Nació Digital dates the presentation of the second edition to October 2024.
Caveat
The presentation does not say whether the percentage counts projects or budget, and the first edition was voted in 2021.

Sources carrying this claim

  1. Ajuntament de Barcelona — Ciutat Vella presentation of the second participatory budget
  2. Nació Digital — Barcelona again sets aside only €30 million for participatory budgets (7 October 2024)
Claim 12 clm-e77546182e36f5df quantitative
Barcelona announced €75 million for its first participatory budget in 2020
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Nació Digital reports that the participatory budget presented in February 2020 announced 75 million euros to be spent in one term.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Nació Digital — Barcelona again sets aside only €30 million for participatory budgets (7 October 2024)
Claim 13 clm-06e1b27d52d0b47a quantitative
cut it to €30 million when the pandemic hit and kept €30 million for 2024-27
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Nació Digital: after the pandemic the government said reprioritisation left 30 million euros for the ten districts, and the Collboni government repeated the same figure for the second edition.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Nació Digital — Barcelona again sets aside only €30 million for participatory budgets (7 October 2024)
Claim 14 clm-29fedc8119b23a88 descriptive
some first-edition winners, such as a cycle lane on Plaça de Catalunya, were later dropped
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
betevé reports that some winning projects of the first edition later fell away, such as a cycle lane on Plaça de Catalunya.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. betevé — 76 projects win the second participatory budget (19 May 2025)
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 2026-10-14-success-audit effective 2026-10-14 · created 2026-10-14

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

sha256:22ba8eb34992fd2a97f45f22a3ed827287d800b0b2d285c16d7e7f1a3d00129c
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
14
of 14 claims mapped
9
source dossiers
5
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Ajuntament de Barcelona (Barcelona City Council)
Actor types
city-government
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

9 source dossiers

Decidim (project) decidim.org · 3 linked claims

Open original source ↗

Stable source ID
src-27b7dec90ffc2556
Publisher
Name not classified · decidim.org
Type / language
web-page · language not classified
Published
2022-02-01
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Official project blog: 400 instances, 20+ countries, named institutional users.

Descriptive only — not page/paragraph exact
Claims linked
Ajuntament de Barcelona (authority) decidim.barcelona · 2 linked claims

Open original source ↗

Stable source ID
src-c72fb6695a4194b5
Publisher
Name not classified · decidim.barcelona
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

City's live decidim.barcelona instance running the 2024-27 participatory budget process.

Descriptive only — not page/paragraph exact
Claims linked
Universitat Oberta de Catalunya (research) uoc.edu · 1 linked claim

Open original source ↗

Stable source ID
src-5a23df5925ed5c85
Publisher
Name not classified · uoc.edu
Type / language
web-page · language not classified
Published
2019-06-20
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

UOC news item: Decidim won second prize for most innovative open-source software in the European Commission's 2019 Sharing & Reuse Awards; decidim.barcelona is the City Council's participatory-democracy platform, developed under a UOC–City Council agreement.

Descriptive only — not page/paragraph exact
Claims linked
Ajuntament de Barcelona — participatory budget monitoring decidim.barcelona · 3 linked claims

Open original source ↗

Stable source ID
src-4a81ccd6dfe4aee8
Publisher
Name not classified · decidim.barcelona
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The city's live monitoring component for the 2024-27 participatory budget: a global execution level, a percentage per district and 76 individual actions, downloadable as CSV. It showed "Estat d'execució global 40,5 %" on 22 August 2026; the page is continuously updated and carries no publication date.

Descriptive only — not page/paragraph exact
Claims linked
Ajuntament de Barcelona — execution reaches 25% decidim.barcelona · 3 linked claims

Open original source ↗

Stable source ID
src-e57decf6ea0e7060
Publisher
Name not classified · decidim.barcelona
Type / language
web-page · language not classified
Published
2026-04-04
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Official post on the city's participation platform: the overall execution level of the approved 2024-27 projects stands at 25 %.

Descriptive only — not page/paragraph exact
Claims linked
Ajuntament de Barcelona — proposals submitted 2024-27 decidim.barcelona · 1 linked claim

Open original source ↗

Stable source ID
src-73b848d63c8ee586
Publisher
Name not classified · decidim.barcelona
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The component that carries the submitted-proposal count itself: 1,727 proposals. The process landing page shows a larger, space-wide 2,454, which counts the 727 prioritised proposals a second time.

Descriptive only — not page/paragraph exact
Claims linked
Nació Digital — Barcelona again sets aside only €30 million for participatory budgets (7 October 2024) naciodigital.cat · 3 linked claims

Open original source ↗

Stable source ID
src-1b80c00651b7540e
Publisher
Name not classified · naciodigital.cat
Type / language
web-page · language not classified
Published
2024-10-07
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Reports that the first participatory budget, presented in February 2020, was announced at €75 million for one term, cut to €30 million across the ten districts after the pandemic, and that the second edition keeps €30 million; the residents' federation FAVB calls for more ambition.

Descriptive only — not page/paragraph exact
Claims linked
betevé — 76 projects win the second participatory budget (19 May 2025) beteve.cat · 2 linked claims

Open original source ↗

Stable source ID
src-478c315f92575c85
Publisher
Name not classified · beteve.cat
Type / language
web-page · language not classified
Published
2025-05-19
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

76 projects won the second edition out of 239 put to the vote; 48,796 people voted against 39,433 in 2021; some first-edition winners were later dropped, such as a cycle lane on Plaça de Catalunya.

Descriptive only — not page/paragraph exact
Claims linked
Ajuntament de Barcelona — Ciutat Vella presentation of the second participatory budget ajuntament.barcelona.cat · 1 linked claim

Open original source ↗

Stable source ID
src-a646d3b32760d262
Publisher
Name not classified · ajuntament.barcelona.cat
Type / language
pdf · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-14
Dossier created
2026-10-14
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

District presentation launching the second edition with €30 million; gives the first edition in figures: about 70,000 participants, 1,982 initial projects, 76 chosen and '82,2% execució actual'.

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

🇫🇷 Budget Participatif — Citywide Participatory Budgeting · Paris Both hand residents real budgeting power: Decidim (2016) is Barcelona's own platform, Paris runs a citywide vote since 2014. 🇨🇭 Smart City Zürich Strategy · Zürich Two governance-tech paths: Barcelona open-sourced its own participation platform, Decidim (2016); Zurich built a broader digital strategy. 🇪🇸 VinclesBCN — Tablets Against Unwanted Loneliness · Barcelona Two Barcelona digital services from the same 2016 wave: Decidim gives residents a governance voice, VinclesBCN an elder social one.

The participation platform, and what happened after the launch

Four cities put proposals and budgets online, three of them on software another city wrote. The interesting part is not the launch — it is what the same city's own data says a few years later.

ProjectSinceStatusOutcomeEvidenceRun byCostWhere it stands now
Budget Participatif — Citywide Participatory BudgetingParis, 🇫🇷 2014 Live Ongoing Official City government not public A decade in and still running at scale, with thousands of worksites finished — and no edition in an election year.
Decidim Participation PlatformBarcelona, 🇪🇸 2016 Live Ongoing Official City government not public The software outgrew the city that wrote it, counting hundreds of instances by 2022 while Barcelona still uses it at home.
Decide MadridMadrid, 🇪🇸 2015 Live Scaled back Peer-reviewed City government not public The engine was reused worldwide; the platform that produced it was pared back by the administration that inherited it.
BA Elige: Buenos Aires's Online Participatory BudgetBuenos Aires, 🇦🇷 2017 Completed Scaled back Peer-reviewed City government not public Three editions on Madrid's software, and the city's own dataset records the traffic falling away between them.

Explore the wider context

🌍 Hardware Stops, Data Doesn't📖 Civic participation platform📖 Participatory budgeting📖 Digital identity
📎 Cite this project

1001 Smart Cities (2026). “Decidim Participation Platform” — Barcelona, Spain. The Smart City Atlas. https://1001smartcities.org/projects/barcelona-decidim/ (last verified 2026-10-14). Data: CC BY 4.0.

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

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