ESG-Factsheet 2026 Oldenburg veröffentlicht Emissionsdaten; Scope 1–3 2025: 10,549,361 t CO2e

ESG-Factsheet 2026 Oldenburg veröffentlicht Emissionsdaten; Scope 1–3 2025: 10,549,361 t CO2e

Sustainability indicators

Oldenburg, August 2026

ESG-Factsheet 2026 2

Environment

Greenhouse gas emissions

Unit 2025 2024 2023 … 20181 Total Scope 1 t CO2e 830,228 999,561 1,327,242 … 2,734,121 Combined heat and power plant Hastedt t CO2e 0 189,563 580,631 … 703,028 Waste-to-energy plant Bre- men (MHKW)2 t CO2e 224,246 232,649 233,069 … 217,370 Medium-calorific power plant Bremen (MKK)2 t CO2e 141,451 132,084 158,279 … 121,166 Combined heat and power plant Hastedt t CO2e 139,823 121,943 46,921 … n/a Other Scope 1 t CO2e 324,709 325,974 308,342 … 1,692,557 Biogenic emissions out of scope t CO2e 503,229 414,755 403,655 … 539,018 Total Scope 2 (market- based) t CO2e 113,923 132,863 150,377 … 261,430 Grid losses (electricity) t CO2e 110,702 107,100 109,571 … 153,913 Gas storage in total t CO2e 0 0 17,846 … 27,243 Data centres t CO2e 0 0 0 … 6,484 Other Scope 2 t CO2e 3,222 25,763 22,960 … 73,790 Total Scope 3 t CO2e 9,605,208 10,623,684 11,790,808 … 15,463,074 3.1 Purchased goods and services t CO2e 177,612 221,032 156,276

127,102 3.2 Capital goods t CO2e 365,078 316,654 309,519 … 133,143 3.3 Fuel- and energy-re- lated emissions t CO2e 3,427,739 3,797,521 4,561,245 … 7,421,078 3.5 Waste generated t CO2e 2,620 2,913 5,597 … 221,661 3.7 Employee commuting t CO2e 4,656 3,228 7,049 … n/a 3.11 Gas volume sales3 t CO2e 5,482,882 6,038,578 6,751,122 … 7,560,091 3.11 Telecommunications t CO2e 144,558 243,758 n/a … n/a Scope 3 (upstream) t CO2e 3,977,704 4,341,348 5,039,686 … 7,902,983 Scope 3 (downstream) t CO2e 5,627,440 6,282,336 6,751,122 … 7,560,091 Total Scope 1–3 t CO2e 10,549,361 11,756,107 13,268,427 … 18,458,625 2 Base year for the collection of emissions data and for the Group’s reduction targets. 3 CO2 emissions from auxiliary fuels included. 4 Gas volume sales comprise total gas volume sales plus liquefied petroleum gas added for biomethane feed-in.

ESG-Factsheet 2026 3

Classic air pollutants from large installations (installations pursuant to 13th and 17th BImSchV)

Unit 2025 2024 2023 … 2018 Sulphur dioxide (SO2) kg 130,688 131,747 372,226 … 1,183,114 Nitrogen oxides (NOx) kg 727,129 744,491 900,745 … 2,065,162 Carbon monoxide (CO) kg 213,590 205,207 166,182 … 192,295 Total dust kg 1,205 5,669 13,263 … 27,896 Total weight of air pol- lutants kg 1,072,612 1,087,114 1,452,416 … 3,468,467

Air pollutant intensities per million Euro of revenue

Unit 2025 2024 2023 … 2018 Sulphur dioxide (SO2) intensity t / Mio. EUR 0.016 0.015 0.037 … 0.209 Nitrogen oxides (NOx) intensity t / Mio. EUR 0.090 0.086 0.088 … 0.364

Air pollutant intensities from electricity generation

Unit 2025 2024 2023 … 2018 Sulphur dioxide (SO2) per kWh generated mg/kWh 27.9 25.5 n/a … n/a Nitrogen oxides (NOx) per kWh generated mg/kWh 150.1 145.4 n/a … n/a

, Air and water pollution (classification according to the PRTR register)

Unit 2025 2024 2023 … 2018 Ammonia (NH3) in air kg 29,257 n/a n/a … n/a Nitrogen oxides (NOx) in air kg 528,791 n/a n/a … n/a Total organic carbon (TOC) in water kg 62,720 n/a n/a … n/a

Transport/Mobility

Unit 2025 2024 2023 … 2018 Vehicle fuel consumption l 1,822,402 2,203,616 2,018,914

1,711,772 Vehicle fuel consumption1 t CO2e 5,011 6,140 5,725 … 5,361 1 Includes CO2 emissions from diesel, petrol, natural gas and electricity mix consumption.

ESG-Factsheet 2026 4

Electricity generation

Unit 2025 2024 2023 … 2018 Specific CO2 emissions from electricity genera- tion g CO2/ kWh 34.4 60.8 103.6 … 501 Total electricity genera- tion MWh 4,685,793 5,160,377 5,855,044 … 3,841,521 Renewable energy MWh 4,058,770 4,379,000 4,902,853

1,416,965 Wind MWh 3,761,547 4,063,078 4,557,154 … 1,051,082 PV MWh 2,500 2,082 2,100 … 2,219 Hydropower MWh 12,677 6,636 19,078 … 16,316 Biogenic fuels MWh 85,062 88,002 95,093 … 122,140 Waste (biogenic)

196,984 219,202 229,429 … 225,208 Conventional electricity generation (excluding waste) MWh 433,241 564,914 720,673

2,199,124 Natural gas MWh 431,616 398,560 199,879 … 272,854 Hard coal MWh 0 164,881 518,987 … 1,921,257 Heating oil and other fuels MWh 1,625 1,473 1,807 … 5,013 Waste-to-energy

Waste (non-biogenic) MWh 193,782 216,463 231,518 … 225,432

Share of electricity generation by primary energy source Renewable energy Wind % 80.2 78.8 77.82 … 27.40 PV % 0.05 0.04 0.04 … 0.06 Hydropower % 0.27 0.13 0.33 … 0.42 Biogenic fuels % 1.82 1.66 1.64 … 3.25 Waste (biogenic) % 4.20 4.25 3.92 … 5.86 Total share of renewable energy % 86.7 80.63 79.83

31.13 Conventional electricity generation

Conventional % 9.25 10.95 12.31 … 57.25 Waste-to-energy

Waste (non-biogenic) % 4.14 4.19 3.95 … 5.86

Installed electrical capacity Renewable energy MW 2,507 2,539 2,583

488 Wind (offshore) MW 218 218 218 … 142 Wind (onshore) MW 2,272 2,304 2,351 … 331 PV MW 3.3 2.8 2.8 … 4.3 Hydropower MW 10.8 10.8 10.8 … 10.8 Conventional electricity generation

Conventional MW 444 575 574 … 761 Waste-to-energy

Waste MW 102 102 97.1 … 97.1

ESG-Factsheet 2026 5

Heat generation

Unit 2025 2024 2023 … 2018 Specific CO2 emissions from heat generation g CO2 / kWh 125 138 142 … 228 Total heat generation MWh 1,868,220 1,768,151 1,830,396 … 1,406,943 Renewable energy MWh 375,555 307,174 291,157 … 437,704 Waste (biogenic) MWh 268,824 202,538 179,331 … 289,992 Biogenic fuels MWh 111,731 104,636 111,826 … 147,712 Conventional heat genera- tion

Conventional MWh 1,249,333 1,325,951 1,419,684 … 969,239 Waste-to-energy

Waste (non-biogenic) MWh 243,332 135,026 119,554 … 0

Share of heat generation by primary energy source Renewable energy % 20.1 17.4 15.9 … 31.1 Biogenic fuels % 6.0 5.9 6.1 … 10.5 Waste (biogenic) % 14.1 11.5 9.8

20.6 Conventional heat genera- tion

Conventional % 66.9 75.0 77.6 … 68.9 Waste-to-energy

Waste (non-biogenic) % 13.0 7.6 6.5 … 0.0

Total energy generation (electricity and heat)

Unit 2025 2024 2023 … 2018 Total energy generation MWh 6,554,013 6,928,528 7,685,440 … 5,248,464 Total renewable energy generation MWh 4,343,325 4,686,174 5,194,011 … 1,854,669 Total conventional en- ergy generation MWh 2,119,688 2,242,354 2,491,429 … 3,393,795

Waste

Unit 2025 2024 2023 … 2018 Total waste t 295,023 293,867 322,709 … 255,829 Non-hazardous waste t 206,651 205,882 217,588 … 187,449 Hazardous waste t 88,372 87,985 105,319 … 68,380 Radioactive waste t 0 0 0 … 0

Own energy consumption

Unit 2025 2024 2023 … 2018 Specific electricity and heat demand per employee1 kWh/ FTE 4,564 5,483 4,954 … 7,378 Total final energy consump- tion2 MWh 5,588,180 5,547,039 6,363,578 … 10,684,234 Total final energy consumption from renewable energy MWh 2,049,670 1,942,895 1,962,580 … 1,923,744 1 Based on building use. 2 Includes energy consumption from generation, network facilities, buildings and vehicles; excluding network losses.

ESG-Factsheet 2026 6

Additional environmental and climate indicators

Unit 2025 2024 2023 … 2018 carbon intensity, Scope 1 and 21 t CO2e / Mio. EUR 116 130 145 … 529 carbon intensity, Scope 1–31 t CO2e / Mio. EUR 1,302 1,354 1,302 … 3,257 carbon intensity, Scope 11 t CO2e / MWh 102 115 130 … 482 carbon intensity, Scope 31 t CO2e / MWh 1,185 1,224 1,157 … 2,728 Percentage of operat- ing sites with environ- mental risk analysis2 % 100 100 n/a … n/a Percentage of operat- ing sites with water-re- lated risk analysis3 % 100 100 n/a … n/a Training rate for envi- ronmental and energy management4 % 81 81 82 … n/a Percentage of operat- ing sites with environ- mental certification ac- cording to EMAS, ISO 14001 and/or ISO 500014 % 81 81 82 … n/a Environmental viola- tions5 Number 0 0 0

n/a 1 Sum of greenhouse gas emissions for the current base year in tonnes of carbon dioxide equivalent (t CO 2e) per € million of revenue for the same base year. 2 As part of the double materiality assessment, ESG-related opportunities, risks and impacts are analysed for all fully consoli- dated companies (for the first time for the 2024 financial year). 3 Within the framework of the EU Taxonomy and the CSRD, a climate risk analysis is carried out, which includes an analysis of water-related climate risks. This covers the core activities represented by the following companies: EWE AG, be.storaged, EWE TRADING, EWE VERTRIEB, EWE TEL, EWE Go, BTC, ALTERRIC, EWE NETZ, EWE GASSPEICHER, EWE WASSER, swb Services, swb Erzeugung & Entsorgung and wesernetz. 4 In relation to the core activities represented by the following companies: EWE AG, be.storaged, EWE TRADING, EWE VER- TRIEB, EWE TEL, EWE Go, BTC, ALTERRIC, EWE NETZ, EWE GASSPEICHER, EWE WASSER, swb Services, swb Erzeugung & En- tsorgung and wesernetz. 5 An environmental violation is deemed to have occurred where a final penalty order has been issued or a fine exceeding €50,000 has been imposed.

ESG-Factsheet 2026 7

Ecologically sustainable business activities

Unit 2025 2024 2023 … 2018 Sales revenues

Taxonomy-aligned busi- ness activities % 25.1 22.3 18.7 … n/a Mio. EUR 2,031.7 1,932.9 1,872.7 … n/a Taxonomy-eligible busi- ness activities % 3.8 3.0 1.2 … n/a Mio. EUR 307.8 263.2 1,994.1 … n/a Non-taxonomy-eligible business activities % 71.1 74.7 80.1 … n/a Mio. EUR 8,104.5 6,485.2 8,011.0 … n/a CapEx

Taxonomy-aligned busi- ness activities % 73.8 56.8 43.6 … n/a Mio. EUR 1,260.8 708.8 491.8 … n/a Taxonomy-eligible busi- ness activities % 0.5 2.0 1.1 … n/a Mio. EUR 73.8 25.4 12.4 … n/a Non-taxonomy-eligible business activities % 25.7 41.2 55.3 … n/a Mio. EUR 438.8 514.6 624.1 … n/a OpEx

Taxonomy-aligned busi- ness activities % 24.6 26.2 28.2 … n/a Mio. EUR 298.0 296.8 299.8 … n/a Taxonomy-eligible busi- ness activities % 1.5 3.8 5.9 … n/a Mio. EUR 26.1 40.1 57.3 … n/a Non-taxonomy-eligible business activities % 73.9 68.1 65.7 … n/a Mio. EUR 894.8 724.1 643.1 … n/a

ESG-Factsheet 2026 8

Social

General information

Unit 2025 2024 2023 2022 2021 Active employees Headcount 11,922 11,579 10,845 10,048 n/a FTE 10,591 10,192 9,931 9,736 n/a Employees with per- manent contracts Headcount 11,178 10,789 n/a n/a n/a % 93.8 93.1 n/a n/a n/a Employees with fixed- term contracts Headcount 744 758 n/a n/a n/a % 6.2 6.5 n/a n/a n/a Apprentices and dual students Headcount 557 514 441 494 n/a Retention rate for ap- prentices and dual students % 89.6 n/a n/a n/a n/a Trainees Headcount 28 20 10 9 n/a Retention rate for trainees % 90.9 n/a n/a n/a n/a Employees covered by collective bargaining agreements % 54.6 55.8 n/a n/a n/a Training rate for social dialogue¹ % 9.7 n/a n/a n/a n/a 1 Percentage of managers across the Group who participated in the ‘Co-determination’ training module.

Occupational safety and health management

Unit 2025 2024 2023 2022 2021 Coverage of the health and safety management s