UnitedHealth Group is a US health insurer and health services company headquartered in Eden Prairie, Minnesota, operating UnitedHealthcare benefits and Optum health services.
Provisional evidence. Published with 2 independent parties, below our full-confidence threshold of 3. Every source cited on this page passed the same quality checks as any other score: all live, none from data aggregators. There is simply less of it.
UnitedHealth cut market-based operational emissions 55% from 2023 to 2025, mainly by buying renewable electricity (44% of use in 2025), but location-based operational emissions fell only about 4% and value-chain emissions rose 2%. Its Scope 3 leaves out care spend. Portfolio temperature scores worsened, and no biodiversity, water or waste metrics were found.
UnitedHealth scores 35/100 (Below expectations) on SINK's independent climate assessment — scored from public data only. Fees pay for the review, never the result. Last verified October 2026.
That places UnitedHealth joint 465th of 813 companies scored, and joint 9th of 13 in Insurance.
Where UnitedHealth sits among insurance peers.
Among the 13 major insurance brands we've scored, UnitedHealth is tied =9th of 13, with 1 other.
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Strongest on Carbon Footprint — Operations and Targets & Commitments (7/10, 7/10). Weakest on Nature & Biodiversity Impact and Water Impact (2/10, 3/10).
The 3 companies in the sector scoring nearest above UnitedHealth.
Cigna reports operational emissions largely covered by renewable certificates rather than power purchase agreements.
See the breakdown →Allianz reports comprehensively under CSRD with PwC assurance, but the company's operational emissions are rising while it claims progress via portfolio accounting changes.
See the breakdown →Admiral discloses mandatory carbon metrics but hasn't cut absolute emissions—Scope 1&2 rose 10% in 2025.
See the breakdown →The formula and all 8 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale8 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.
“Select metrics have been externally assured by Deloitte & Touche, LLP as identified in the performance tables.”
“We will minimize our company's overall environmental impact by reducing our carbon footprint, ensuring efficient use of resources”
“Through the 15-year, 250-megawatt agreement, UnitedHealth Group will purchase clean energy”
“As of December 31, 2025, we had more than 390,000 employees, of whom nearly 165,000 were clinical professionals.”
“UnitedHealth Group is a member of the US Chamber of Commerce, which is actively opposed to US climate policy.”
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UnitedHealth Group is a US health insurer and health services company headquartered in Eden Prairie, Minnesota, operating UnitedHealthcare benefits and Optum health services. It had more than 390,000 employees and $447.6 billion in FY2025 revenue.
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