altafiber scores 48/100 (Making progress) on SINK's independent climate assessment — scored from public data only, no company payment can change a number. Last verified October 2026.
That places altafiber joint 184th of 790 companies scored, and 9th of 17 in Telecommunications.
altafiber reports Scope 1+2 emissions with third-party verification and a 40%-by-2030 target, but Scope 3 (73% of footprint) is screened only once per 3–5 years with no supplier engagement. Operations emissions declined 11.4% since 2021—slower than target pace—while Scope 1 rose. Renewables cover under half of electricity. A $100M wildfire settlement marks material liability risk.
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SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Carbon Footprint — Operations and Transparency & Accountability (8/10, 6/10). Weakest on Water Impact and Nature & Biodiversity Impact (3/10, 3/10).
11 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.
“This GHG inventory has been independently verified by a third-party auditor, Cameron-Cole, LLC.”
“We reduced overall emissions 11.4% from 2021 to 2025”
“science-based net zero emissions target by 2040, covering scope 1 and 2 emissions”
“includes 184 panels, which produce 116,000 kilowatt-hours of power annually”
“accused in lawsuits of allegedly overloading some of the power poles with their communications wires and attachments”
If you believe a source has been misread or a newer version exists, submit a challenge.
Where altafiber sits among telecommunications peers.
Among the 17 major telecommunications brands we've scored, altafiber sits 9th of 17.
As altafiber's score updates, the trajectory will appear here.
This score is not currently being contested.
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No challenges submitted yet. If you have evidence that contradicts this score, you can challenge any question above — cite a public source and we'll review it.
altafiber is a US telecommunications operator providing fiber and broadband infrastructure, primarily in the Midwest and Hawaii. Founded in 1873 as a Cincinnati-based telephone company, it has about 2,100 employees (FY2025 Form 10-K) and is owned by Macquarie. The company runs Hawaiian Telcom as a subsidiary and files SEC disclosures despite private ownership.
European telecom peer; fiber and broadband operator, similar scale and household footprint.
View breakdown →Global telecom operator; comparable emissions scope and infrastructure liability exposure.
View breakdown →European telecom incumbent with fiber rollout; similar Scope 3 materiality and supply chain risk.
View breakdown →US telecom giant; larger scale but comparable wildfire/infrastructure risk and climate disclosure.
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