In 2025, Constellation 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).
Constellation Energy has also provided a category-level breakdown for 4 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 | 6,962,406a | 8,403,750a | 9,679,181a | |
Total Scope 2 | ||||
Market-Based | 76,870a | 66,756a | 379,850a | |
Location-Based | 265,823a | 235,746a | 292,891a | |
Total Scope 3 | 85,286,582a | 84,580,903a | 87,482,855a | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 272.6826a | 356.5746a | 388.4413a |
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In 2025, the total operational greenhouse gas (GHG) emissions of Constellation Energy amounted to 7,228,229 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).a
Compared to 2024, the total operational greenhouse gas (GHG) emissions of Constellation Energy decreased by 16.34%, showing that the company has made progress in taking action to reduce the climate impact of its operations.a
In 2025, the total Scope 1 emissions of Constellation Energy were 6,962,406 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, Constellation Energy's Scope 1 emissions have decreased by 21.48%, reflecting a declining long-term trend in Scope 1 emissions over time.ab
Compared to the previous year (2024), Constellation Energy's Scope 1 emissions decreased by 17.15%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.a
In 2025, Constellation Energy reported Scope 2 greenhouse gas (GHG) emissions of 76,870 tCO₂e using the market-based method and 265,823 tCO₂e using the location-based method.a
Since 2019, Constellation Energy's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have decreased by 36.48%, reflecting a declining long-term trend in Scope 2 emissions over time.ab
Compared to the previous year (2024), Constellation Energy's Scope 2 emissions (Location-Based) rose by 12.76% in 2025, suggesting that the company faced challenges in reducing emissions from purchased electricity and energya
In 2025, Constellation Energy reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, Constellation Energy reported 85,286,582 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 Constellation Energy includes a breakdown across 4 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, Constellation Energy reported total Scope 3 emissions of 85,286,582 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 28.19% of these emissions originated from upstream activities such as purchased goods and capital goods, while 71.81% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, Constellation Energy's Scope 3 emissions have decreased by 11.01%, reflecting a declining long-term trend in Scope 3 emissions over time.ac
Compared to the previous year (2024), Constellation Energy's Scope 3 emissions remained relatively stable, indicating that Constellation Energy's emissions have plateaued with no significant change in its value chain footprint.a
In 2025, Constellation Energy reported emissions for 4 out of the 15 Scope 3 categories defined by the GHG Protocol.a
The limited disclosure restricts visibility into specific emission sources across the company's value chain.
In 2025, the largest contributors to Constellation Energy's Scope 3 emissions were:a
In 2025, Constellation Energy reported Scope 1 greenhouse gas (GHG) emissions of 6,962,406 tCO₂e and total revenues of USD 25,533 millions. This translates into an emissions intensity of 272.68 tCO₂e per millions USD.a
In 2025, Constellation Energy reported a Scope 1 emissions intensity of 272.68 tCO₂e per millions USD. Compared to the peer group median of 2,772.12, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, Constellation Energy ranked 6 out of 24 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
Constellation Energy is therefore positioned in the mid-range of its industry, neither a clear leader nor a laggard in carbon efficiency.a
In 2025, Constellation Energy reported a total carbon footprint of 92,514,811 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 0.76% decrease compared to 2024, indicating progress in reducing its overall greenhouse gas output.a
The largest contributor to Constellation Energy's total carbon footprint was Scope 3 emissions, accounting for 92.19% of the company's total carbon footprint, followed by Scope 1 emissions at 7.53%.a