Automated LED Smart Streetlight Mesh
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.
6 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 2 sources. What changed →
Riga swapped 2,716 sodium lamps for motion-sensing LEDs by 2021, and in 2025 started again with 2,459 more across 151 street sections. Every published number is a pre-project estimate.
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 · 🏙️ Riga city profile · 🌫️ Air quality guide · ⚡ Energy projects
Riga's municipal lighting agency Rigas Gaisma replaced 2,716 sodium streetlights with motion-sensing LEDs and three traffic-flow control systems between 2019 and 2021, under project EKII-3/21, funded through Latvia's Emissions Trading System auction instrument. A follow-on project, EKII-3.1/4, was announced on 3 April 2025: 2,459 more luminaires and their controllers across 151 street sections, again with an expected saving stated in advance. The agency itself no longer exists — it was merged into the city's Department of Outdoor Space and Mobility on 1 March 2024.
📊 Impact
Both projects publish expectations rather than results. EKII-3/21 was projected to save 1,540,934 kWh of electricity and cut 167,961 kg of CO2 a year; EKII-3.1/4 is expected to cut electricity use on the luminaires it replaces by at least 65%, with a proportional reduction of at least 90,856.94 kg CO2 a year. Neither has been re-measured after completion.
🎓 Lesson
Two rounds of retrofit and not one measured kilowatt-hour. Every figure attached to this programme is an ex-ante estimate, and the second project's is expressed as a percentage of the stock it touches, which is the honest way to state a saving nobody intends to verify. There is a second lesson about evidence itself: the agency that ran the first project was absorbed into a city department on 1 March 2024, and its project pages went with it — a completed municipal project can lose its own record to a reorganisation.
Sources
Show your work What this page rests on and what it can’t tell you · all 6 claims with their sources · the forensic record
Evidence Passport · public beta 6 addressable claims, 2 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 6
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-bf85cd27811f479f
quantitative
A follow-on project, EKII-3.1/4, was announced on 3 April 2025: 2,459 more luminaires and their controllers across 151 street sections, again with an expected saving stated in advance
Sources carrying this claim
clm-949f5784ce31a7ae
quantitative
The agency itself no longer exists — it was merged into the city's Department of Outdoor Space and Mobility on 1 March 2024
Sources carrying this claim
clm-0be8323c0eb6ef6d
quantitative
EKII-3.1/4 is expected to cut electricity use on the luminaires it replaces by at least 65%, with a proportional reduction of at least 90,856.94 kg CO2 a year
Sources carrying this claim
clm-b9af7cb843ea4f16
descriptive
Neither has been re-measured after completion
Sources carrying this claim
clm-a703bbe3db700a2a
descriptive
the second project's is expressed as a percentage of the stock it touches, which is the honest way to state a saving nobody intends to verify
Sources carrying this claim
clm-e40893722a949703
quantitative
the agency that ran the first project was absorbed into a city department on 1 March 2024, and its project pages went with it
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.
sha256:2b8bb319719d1976c64bfc9eb45ff997a696fa1cbd3770f7807640aa77a3970a
- 6
- of 6 claims mapped
- 2
- source dossiers
- 1
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- Rigas Gaisma (Riga municipal lighting agency)
- Actor types
- city-government
- Funding model
- grant
- Funding description
- Not recorded
- Cost
- ≈€1.41M (ETS auction funding)
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
2 source dossiers
Rīgas valstspilsētas pašvaldība (authority)
- Stable source ID
src-aa679daec5ab69cf- Publisher
- Name not classified · riga.lv
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-02
- 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
The city government site. No publication date is recorded: the only date the page's own address carries falls after this entry was checked, so it cannot be the publication date.
Rīgas valstspilsētas pašvaldība — smart technologies in the city lighting system, 2,459 luminaires (authority)
- Stable source ID
src-a3c01b7d9769435b- Publisher
- Name not classified · riga.lv
- Type / language
- web-page · language not classified
- Published
- 2025-04-03
- Updated
- 2025-10-28
- Source last checked
- No source-level check date
- Record last verified
- 2026-08-02
- 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
The city announcement of project EKII-3.1/4, the follow-on to the completed retrofit.
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). “Automated LED Smart Streetlight Mesh” — Riga, Latvia. The Smart City Atlas. https://1001smartcities.org/projects/riga-smart-lighting/ (last verified 2026-08-02). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.