EPB Gig City — Fiber-Optic Smart Grid & Community Broadband
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.
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✎ Updated 26 Aug 2026 5 claims added. What changed →
In February 2008 EPB, Chattanooga's municipal utility, approved a citywide smart grid built on a 100% fiber-optic backbone; the roughly 9,000-mile network was completed in September 2010 and now runs about 1,200 automated switches that reroute power around faults, helping cut annual outage minutes by roughly half. The same fiber made Chattanooga the first US city with community-wide 1 Gbps internet (2010), followed by 10-gig in 2015 and 25-gig in 2022. A 2024 University of Tennessee at Chattanooga study valued the combined fiber and smart-grid systems at $5.3 billion in net community benefit for Hamilton County since 2011.
what does this mean?
The strongest source is an independent non-academic evaluation: an audit office, a government or EU review, or an NGO. It grades who did the looking — not how well the project went. All four grades →🎓 Lesson
The broadband was a by-product. EPB laid fibre to automate its power grid — about 1,200 switches that reroute around a fault — and the gigabit service the city became famous for rode on cable the utility needed anyway. That is why the business case survives scrutiny a standalone broadband build would not: the 2024 study behind the $5.3 billion counts both halves, and the grid alone accounts for the 417 million prevented outage minutes and the roughly $631 million back to ratepayers. A municipal utility that already owns poles and a reason to string fibre is a different proposition from a city that only wants internet.
Sources
📅 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 2008. 3 of 3 sources carry a publication date, from 24 August 2022 to 2 July 2026.
When the sources were published
- EPB — Electric Power Board of Chattanooga · utilityEPB Launches America's First Community-wide 25 Gig Internet Service (EPB, authority)
- Institute for Local Self-Reliance (Community Networks) · ngoChattanooga's Municipal Fiber Network Has Delivered $5.3 Billion in Community Benefits (Community Networks / ILSR, independent)
- Chattanooga Times Free Press · pressChattanooga 250: EPB harnessed light to become city's strongest selling point (Chattanooga Times Free Press, press, 2026)
What happened to this record
- Entered the record
- 5 claims added
- Sources last read
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, 3 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-909379fe98f96ec4
quantitative
In February 2008 EPB, Chattanooga's municipal utility, approved a citywide smart grid built on a 100% fiber-optic backbone; the roughly 9,000-mile network was completed in September 2010 and now runs about 1,200 automated switches that reroute power around faults, helping cut annual outage minutes by roughly half
Sources carrying this claim
clm-a575168584027a45
quantitative
The same fiber made Chattanooga the first US city with community-wide 1 Gbps internet (2010), followed by 10-gig in 2015 and 25-gig in 2022
Sources carrying this claim
clm-eb96f60877381847
quantitative
A 2024 University of Tennessee at Chattanooga study valued the combined fiber and smart-grid systems at $5.3 billion in net community benefit for Hamilton County since 2011
Sources carrying this claim
clm-3576feb5ec6b50ed
quantitative
2024 UTC study: $5.3B net community benefit for Hamilton County since 2011; smart grid has prevented 417M+ minutes of power outages, saving ratepayers ~$631M
Sources carrying this claim
clm-4038f0e3b445532c
quantitative
EPB laid fibre to automate its power grid — about 1,200 switches that reroute around a fault — and the gigabit service the city became famous for rode on cable the utility needed anyway
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.
Erratum on this revision's envelope. The snapshot, its hash and its permanent link are untouched.
- createdAt previously read 2026-08-27T11:00:00Z. The batching script that produced this revision advanced createdAt into the future to satisfy the strictly-increasing order the validator requires per entity. The value never recorded a real event; the corrected value is the moment the revision provably existed in the repository. Corrected to 2026-08-26T22:14:17Z on 2026-08-27; evidence: first appears in commit 788e6cc022, committed 2026-08-26T22:14:17Z.
sha256:f94e5edcf652fc6de21a7568897a130b47da5a2d710d3f5193689750b5b341fa
- 5
- of 5 claims mapped
- 3
- source dossiers
- 3
- publication dates recorded
- 1
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- EPB (Electric Power Board of Chattanooga)
- Actor types
- utility
- Funding model
- mixed
- Funding description
- EPB municipal revenue bonds (US$169M, 2008) + US Dept. of Energy smart-grid stimulus grant
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
3 source dossiers
EPB Launches America's First Community-wide 25 Gig Internet Service (EPB, authority)
- Stable source ID
src-ffcd1adfd8d0e646- Publisher
- Name not classified · epb.com
- Type / language
- web-page · language not classified
- Published
- 2022-08-24
- 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
Official EPB account: 1 Gbps first (Sep 2010), 10-gig (Oct 2015), 25-gig (Aug 2022); network's Smart Grid origins.
- Claims linked
Chattanooga's Municipal Fiber Network Has Delivered $5.3 Billion in Community Benefits (Community Networks / ILSR, independent)
- Stable source ID
src-ad4843ec69fed9e5- Publisher
- Name not classified · communitynetworks.org
- Type / language
- web-page · language not classified
- Published
- 2025-12-04
- 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
- Open archived copy ↗ · 2026-04-19
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Reports the 2024 academic study by Bento Lobo, Ph.D. (Univ. of Tennessee at Chattanooga): $5.3B net benefit since 2011 and 417M+ outage minutes prevented.
Chattanooga 250: EPB harnessed light to become city's strongest selling point (Chattanooga Times Free Press, press, 2026)
- Stable source ID
src-50cb58107a63ad23- Publisher
- Name not classified · timesfreepress.com
- Type / language
- web-page · language not classified
- Published
- 2026-07-02
- 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
Recent (July 2026) local-newspaper retrospective for currency-checking; independent of EPB.
- 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.
Continue exploring
Compare this project
Who owns the fibre?
Four cities that decided broadband was infrastructure rather than a service someone else provides — and took four different positions on how far a municipality should go.
| Project | Since | Status | Outcome | Evidence | Run by | Cost | How far the city went |
|---|---|---|---|---|---|---|---|
| Stokab: Stockholm's Municipal Open-Access Dark Fibre NetworkStockholm, 🇸🇪 | 1994 | Live | Succeeded | Official | City government | not public | The city owns dark fibre and leases it to anyone on equal terms, and has never sold internet itself — the shared physical layer, built once. |
| EPB Gig City — Fiber-Optic Smart Grid & Community BroadbandChattanooga, 🇺🇸 | 2008 | Live | Succeeded | Independent | Utility or public operator | not public | The municipal utility built the fibre for its own grid automation and became the retail internet provider on top of it. |
| Medellín Digital: Free Public WiFi & Digital InclusionMedellín, 🇨🇴 | 2007 | Live | Ongoing | Official | City government | not public | No fibre of its own: the city buys access, running free public wifi points and telecentres across every comuna. |
| Smart DocklandsDublin, 🇮🇪 | 2017 | Live | Ongoing | Independent | City government, Research institution | not public | Neither owner nor provider — the city brokered a neutral-host testbed so operators could share one set of masts. |
Explore the wider context
📎 Cite this project
1001 Smart Cities (2026). “EPB Gig City — Fiber-Optic Smart Grid & Community Broadband” — Chattanooga, United States. The Smart City Atlas. https://1001smartcities.org/projects/chattanooga-gig-fiber-grid/ (last verified 2026-08-27). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.