T-Mobile US is a wireless telecommunications carrier headquartered in Bellevue, Washington, serving 38,000 employees and generating $81.4 billion in annual revenue.
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T-Mobile leads on emissions reduction and renewable energy but has serious gaps in nature, water, and biodiversity reporting. The company has achieved 33% absolute emissions cuts since 2020 and 100% renewable electricity, backed by SBTi-validated net-zero targets. However, no formal biodiversity policy, water footprint data, or quantified nature-risk mapping exists. Weak points undermine an otherwise solid climate programme.
T-Mobile US scores 51/100 (Making progress) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places T-Mobile US joint 126th of 847 companies scored, and joint 5th of 18 in Telecommunications.
Where T-Mobile US sits among telecommunications peers.
Among the 18 major telecommunications brands we've scored, T-Mobile US is tied =5th of 18, with 1 other.
Its two lowest-scoring questions, and what the evidence didn't show.
No formal biodiversity policy, TNFD disclosure, nature footprint assessment, or deforestation commitment found.
No water consumption data, footprint reporting, or formal stewardship programme disclosed.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Targets & Commitments and Carbon Footprint — Operations (9/10, 8/10). Weakest on Nature & Biodiversity Impact and Water Impact (3/10, 3/10).
The 3 companies in the sector scoring nearest above T-Mobile US.
Telefónica has delivered substantial absolute emissions reductions—84.8% in operations, 31.3% in supply chain since baseline years—backed by SBTi validation and 11 consecutive CDP A-List recognitions.
See the breakdown →Vodafone has built credible near-term climate targets validated by SBTi and achieved major operational emissions cuts (84% below FY20).
See the breakdown →The formula and all 10 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
T-Mobile US is a wireless telecommunications carrier headquartered in Bellevue, Washington, serving 38,000 employees and generating $81.4 billion in annual revenue. Founded in 2001, it operates as a major mobile network operator in the United States, competing with Verizon and AT&T in voice, data, and broadband services.
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