1001 Smart Cities

Permanent project revision

Vienna's Citizens' Solar & Wind Power Plants

Revision 2026-08-23-evidence-baseline-c9 · effective 2026-07-22

Current revision. This is the snapshot used by the live entity page.

unreviewed

Created the first structured Evidence Passport with 7 claims and 3 source dossiers.

sha256:8aa38e762ec9b634fe757c038974d2625e9278b3d93c141e39cf74b5e5c23cf7
All revisions → Current entity page →

Change set

  • add /evidencePassport — Added claim-level evidence mapping and source dossiers.
  • add /revisionHistory — Established a permanent, hash-addressed baseline revision.
7
of 7 claims mapped
3
source dossiers
1
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Claims, one by one

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-2df71f382e40fddc quantitative
Since Wien Energie's first Bürgerkraftwerk opened in Donaustadt in 2012
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The city's own platform dates it to the day: "Vienna's first citizens' power plant opened on 4 May 2012 on the premises of Donaustadt power station." Wien Energie's release says the same in its own words: "Im Jahr 2012 ging in der Donaustadt das erste Bürger*innen-Solarkraftwerk in Betrieb."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Smart City Wien (authority)
  2. Wien Energie press release (operator, 2024-04-14)
Claim 2 clm-869029e155e32fdb quantitative
the program has grown to more than 30 citizen solar and wind plants
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The city's platform states the count and the two technologies together: "Over 30 solar and wind plants are already supplying the city with carbon-free energy."
Caveat
The operator's April 2024 release counts the thirtieth solar plant specifically; the combined figure of more than thirty covers solar and wind together.

Sources carrying this claim

  1. Smart City Wien (authority)
Claim 3 clm-504c1d3dc2bbde8d quantitative
Residents buy up to five €250 'Sonnenpakete'
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The release gives both numbers: "Ein Sonnenpaket kostet 250 Euro", and buyers may "bis zu fünf Sonnenpakete erwerben".
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Wien Energie press release (operator, 2024-04-14)
Claim 4 clm-75cf62100e0935d1 quantitative
a guaranteed minimum of €52.80 a year per package over a five-year term
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The operator states the guarantee in euros, not as a rate: "Wien Energie garantiert einen jährlichen Mindestertrag von 52,80 Euro pro Sonnenpaket innerhalb der fünfjährigen Laufzeit."
Caveat
The annual payment returns the capital as well as a yield: five payments of €52.80 come to €264 against the €250 paid in. No listed source expresses that as a percentage.

Sources carrying this claim

  1. Wien Energie press release (operator, 2024-04-14)
Claim 5 clm-d54f93966954caad descriptive
paid as vouchers against their electricity bill
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The city's platform describes the payout form and its term: "In return for their investment the co-owners of the plants receive an annual remuneration in the form of vouchers from Wien Energie over a period of five years." Wien Energie's product page says the vouchers are redeemed as a credit on a Wien Energie electricity bill.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Smart City Wien (authority)
  2. Wien Energie (operator)
Claim 6 clm-80e6de5c4fe8bce6 descriptive
rising with the sunshine the panels catch
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The release makes the variable part explicit: a Sonnenpaket "beinhaltet zusätzlich eine variable Mehrvergütung. Je nach Höhe der jährlicher Sonnenstunden, die auf die Photovoltaikmodule des Bürger*innen-Solarkraftwerkes strahlen, kann diese Rendite weiter steigen."
Caveat
The variable top-up can only raise the payout, never lower it: the €52.80 is a floor the operator guarantees.

Sources carrying this claim

  1. Wien Energie press release (operator, 2024-04-14)
Claim 7 clm-47d7bab6eb07a672 quantitative
More than 12,200 people have invested over €40 million to date.
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The release states both: "12.200 Wiener*innen haben sich … an der regionalen Ökostromproduktion beteiligt" and "über 40 Millionen Euro klimafreundlich investiert". Wien Energie's live product page still gives "Rund 12.200 Wiener*innen".
Caveat
Both figures date from April 2024, and the operator's own page still carries the same participant count today, so the number has not moved rather than being freshly counted.

Sources carrying this claim

  1. Wien Energie press release (operator, 2024-04-14)
  2. Wien Energie (operator)

Source dossiers and revision state

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 2026-08-23-evidence-baseline-c9 effective 2026-07-22 · created 2026-08-23

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

sha256:8aa38e762ec9b634fe757c038974d2625e9278b3d93c141e39cf74b5e5c23cf7
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
7
of 7 claims mapped
3
source dossiers
1
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Wien Energie
Actor types
utility
Funding model
utility
Funding description
Citizen crowd-investment via Wien Energie 'Sonnenpakete' (€250 each, max. 5 per person)
Cost
€40m+ cumulative citizen investment since 2012
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

3 source dossiers

Smart City Wien (authority) smartcity.wien.gv.at · 3 linked claims

Open original source ↗

Stable source ID
src-10e66b731937b54c
Publisher
Name not classified · smartcity.wien.gv.at
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-22
Dossier created
2026-08-23
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Official platform profiling the city's community energy plans.

Descriptive only — not page/paragraph exact
Claims linked
Wien Energie (operator) wienenergie.at · 2 linked claims

Open original source ↗

Stable source ID
src-45c9df7357997a99
Publisher
Name not classified · wienenergie.at
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-22
Dossier created
2026-08-23
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The operator's live product page: participant count and the terms on which the vouchers are redeemed against a Wien Energie electricity bill. It states neither the number of plants nor the package price.

Descriptive only — not page/paragraph exact
Claims linked
Wien Energie press release (operator, 2024-04-14) wienenergie.at · 5 linked claims

Open original source ↗

Stable source ID
src-8af9e56f489cb559
Publisher
Name not classified · wienenergie.at
Type / language
web-page · language not classified
Published
2024-04-14
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-22
Dossier created
2026-08-23
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The operator's announcement of the thirtieth citizens' solar plant, and the sentence-level source for the €250 package, the five-package limit, the guaranteed €52.80 a year across a five-year term, the 12,200 participants and the €40 million invested.

Descriptive only — not page/paragraph exact
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.