In 2025, Eversource Energy completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
Eversource Energy has also provided a category-level breakdown for 10 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Scope 1 | 160,078a | 154,587a | 158,912a | |
Total Scope 2 | ||||
Market-Based | 420,232a | 429,140b | 425,559b | |
Location-Based | 443,049b | 449,148b | 439,858b | |
Total Scope 3 | 29,363,952a | 28,536,114a | 28,140,487a | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 11.8163a | 12.9896a | 13.3419a |
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In 2025, the total operational greenhouse gas (GHG) emissions of Eversource Energy amounted to 603,127 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2).ab
Compared to 2024, the total operational greenhouse gas (GHG) emissions of Eversource Energy decreased by 0.1%, showing that the company has made progress in taking action to reduce the climate impact of its operations.ab
In 2025, the total Scope 1 emissions of Eversource Energy were 160,078 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, Eversource Energy's Scope 1 emissions have decreased by 12.36%, reflecting a declining long-term trend in Scope 1 emissions over time.ac
Compared to the previous year (2024), Eversource Energy's Scope 1 emissions increased by 3.55%, suggesting that the company faced challenges in reducing emissions from its directly owned or controlled operations.a
In 2025, Eversource Energy reported Scope 2 greenhouse gas (GHG) emissions of 420,232 tCO₂e using the market-based method and 443,049 tCO₂e using the location-based method.ab
Since 2019, Eversource Energy's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have remained relatively stable, indicating that Eversource Energy's emissions have plateaued with no significant change in its energy consumption footprint.bd
Compared to the previous year (2024), Eversource Energy's Scope 2 emissions (Location-Based) have remained relatively stable, indicating that Eversource Energy's emissions have plateaued with no significant change in its energy consumption footprint.b
In 2025, Eversource Energy reported its Scope 2 emissions using the market-based method and using the location-based method.ab
In 2025, Eversource Energy reported 29,363,952 metric tons of CO₂ equivalent (tCO₂e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain.a
The 2025 disclosure of Eversource Energy includes a breakdown across 10 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2024, demonstrating consistent Scope 3 emissions reporting coverage year over year.a
In 2025, Eversource Energy reported total Scope 3 emissions of 29,363,952 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 65.98% of these emissions originated from upstream activities such as purchased goods and capital goods, while 34.02% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, Eversource Energy's Scope 3 emissions have increased by 53.72%, reflecting a rising long-term trend in Scope 3 emissions over time.ae
Compared to the previous year (2024), Eversource Energy's Scope 3 emissions remained relatively stable, indicating that Eversource Energy's emissions have plateaued with no significant change in its value chain footprint.a
In 2025, Eversource Energy reported emissions for 10 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This reflects a high level of granularity and transparency in the company's emissions reporting.
In 2025, the largest contributors to Eversource Energy's Scope 3 emissions were:a
In 2025, Eversource Energy reported Scope 1 greenhouse gas (GHG) emissions of 160,078 tCO₂e and total revenues of USD 13,547 millions. This translates into an emissions intensity of 11.82 tCO₂e per millions USD.a
In 2025, Eversource Energy reported a Scope 1 emissions intensity of 11.82 tCO₂e per millions USD. Compared to the peer group median of 2,141.58, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, Eversource Energy ranked 2 out of 25 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places Eversource Energy among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, Eversource Energy reported a total carbon footprint of 29,967,079 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 2.84% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.ab
The largest contributor to Eversource Energy's total carbon footprint was Scope 3 emissions, accounting for 97.99% of the company's total carbon footprint, followed by Scope 2 emissions at 1.48%.ab