Black Hills CorporationNYSE: BKH

2024 EEI ESG Disclosure

· Issued by Black Hills Corporation
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Electric Company ESG/Sustainability Quantitative Information

Parent Company: Black Hills Corporation

Operating Company: Black Hills Colorado Electric, LLC (d/b/a Black Hills Energy), Black Hills Power, Inc. (d/b/a Black Hills Energy), Cheyenne Light, Fuel and Power Company (d/b/a Black Hills Energy), Black Hills Colorado IPP, LLC, Black Hills Colorado Wind, LLC, Black Hills Electric Generation, LLC, Black Hills Wyoming, LLC

Business Type: Vertically Integrated

State of Operation: Colorado, South Dakota, Wyoming

State with RPS Programs: Colorado

Regulatory Environment: Regulated and Non-Regulated

Report Date: June 18, 2025

Ref, No. Refer to the 'EEI Definitcions' tab for more information on each metric Baseline 2005 Last Year 2023 Current Year 2024 Comments, Links, Additional Information, and Notes

Portfolio

1

1.1

1.2

1.3

1.4

1.5

1.5.1

1.5.2

1.5.3

1.5.4

1.5.5

1.6

Owned Nameplate Generation Capacity at end of year (MW) Coal

Natural Gas Nuclear Petroleum

Total Renewable Energy Resources Biomass/Biogas

Geothermal Hydroelectric Solar

Wind

Other

623.6

363.0

221.0

0.0

40.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

1,394.3

394.6

760.0

0.0

38.0

201.7

0.0

0.0

0.0

0.0

201.7

0.0

1,394.3

394.6

760.0

0.0

38.0

201.7

0.0

0.0

0.0

0.0

201.7

0.0

This includes 100MW capacity of dual fuel Natural Gas and Oil generation.

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2.i 2.1.i

2.2.i

2.3.i

2.4.i

2.5.i

2.5.1.i

2.5.2.i

2.5.3.i

2.5.4.i

2.5.5.i

2.6.i

2.ii 2.1.ii

2.2.ii

2.3.ii

2.4.ii

2.5.ii 2.5.1.ii

2.5.2.ii

2.5.3.ii

2.5.4.ii

2.5.5.ii

2.6.ii

Owned Net Generation for the data year (MWh) Coal

Natural Gas Nuclear Petroleum

Total Renewable Energy Resources Biomass/Biogas

Geothermal Hydroelectric Solar

Wind Other

Purchased Net Generation for the data year (MWh) Coal

Natural Gas Nuclear Petroleum

Total Renewable Energy Resources Biomass/Biogas

Geothermal Hydroelectric Solar

Wind

Other

2,652,147

2,563,767

83,649

0

4,731

0

0

0

0

0

0

0

3,827,200

0

0

0

0

17,205

0

0

17,205

0

0

3,810,002

5,233,603

2,536,490

2,018,974

0

-1,208

679,347

0

0

0

0

679,347

0

2,019,336

162,665

0

0

0

349,154

0

0

21,448

86,284

241,422

1,507,517

5,254,644

2,353,154

2,241,885

0

-924

660,528

0

0

0

0

660,528

0

2,225,119

104,205

0

0

0

1,073,754

0

0

19,921

483,758

570,075

1,047,160

Net generation and emissions adjusted by % equity of jointly owned sources. Includes 49.9% third party ownership of Black Hills Colorado IPP reported as noncontrolling interest.

Includes market purchased power and power purchased agreements. Purchased power data excludes intercompany purchases between Black Hills Corporation's

Includes market purchases and all other purchased power.

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3.0

Capital Expenditures and Energy Efficiency (EE)

Total Annual Capital Expenditures (nominal dollars)

Incremental Annual Electricity Savings from EE Measures (MWh) Incremental Annual Investment in Electric EE Programs (nominal dollars)

Retail Electric Customer Count (at end of year) Commercial

Industrial

Residential

3.1

Not available

$590M

$798M

3.2

Not available

19,841

16,793

3.3

Not available

$7,569,530

$7,602,140

4.0

4.1

25,745

31,480

32,289

4.2

142

84

83

4.3

165,483

190,776

192,716

Emissions

5

GHG Emissions: Carbon Dioxide (CO2) and Carbon Dioxide Equivalent (CO2e)

Note: The alternatives available below are intended to provide flexibility in reporting GHG emissions, and should be used to the extent appropriate for each company. Owned Generation

Carbon Dioxide (CO2)

Total Owned Generation CO2 Emissions (MT)

Total Owned Generation CO2 Emissions Intensity (MT/Net MWh) Carbon Dioxide Equivalent (CO2e)

Total Owned Generation CO2e Emissions (MT)

Total Owned Generation CO2e Emissions Intensity (MT/Net MWh) Purchased Power

Carbon Dioxide (CO2)

Total Purchased Generation CO2 Emissions (MT)

Total Purchased Generation CO2 Emissions Intensity (MT/Net MWh) Carbon Dioxide Equivalent (CO2e)

Total Purchased Generation CO2e Emissions (MT)

Total Purchased Generation CO2e Emissions Intensity (MT/Net MWh) Owned Generation + Purchased Power

Carbon Dioxide (CO2)

Total Owned + Purchased Generation CO2 Emissions (MT)

Total Owned + Purchased Generation CO2 Emissions Intensity (MT/Net MWh) Carbon Dioxide Equivalent (CO2e)

Total Owned + Purchased Generation CO2e Emissions (MT)

Total Owned + Purchased Generation CO2e Emissions Intensity (MT/Net MWh) Non-Generation CO2e Emissions of Sulfur Hexafluoride (SF6)

Total CO2e emissions of SF6 (MT)

Leak rate of CO2e emissions of SF6 (MT/Net MWh) Nitrogen Oxide (NOx), Sulfur Dioxide (SO2), Mercury (Hg)

Nitrogen Oxide (NOx)

Total NOx Emissions (MT)

Total NOx Emissions Intensity (MT/Net MWh) Sulfur Dioxide (SO2)

Total SO2 Emissions (MT)

Total SO2 Emissions Intensity (MT/Net MWh) Mercury (Hg)

Total Hg Emissions (kg)

Total Hg Emissions Intensity (kg/Net MWh)

Global warming potentials for historic data are updated to reflect 2024 calendar year EPA GHG Reporting Program methodologies.

Customers calculating Scope 2 emissions should use the residual intensity published in EEI's "Electric Company Carbon Emissions and Electricity Mix Reporting Database".

Facilities that do not trip the EPA reporting threshold for SF6 emissions have been estimated.

5.1

5.1.1

5.1.1.1

3,264,707

4,071,461

3,953,507

5.1.1.2

1.23

0.78

0.75

5.1.2

5.1.2.1

3,289,952

4,096,242

3,976,600

5.1.2.2

1.24

0.78

0.76

5.2

5.2.1

5.2.1.1

3,137,519

903,728

586,051

5.2.1.2

0.82

0.44

0.26

5.2.2

5.2.2.1

3,151,924

909,655

589,844

5.2.2.2

0.82

0.45

0.27

5.3

5.3.1

5.3.1.1

6,402,226

4,975,189

4,539,558

5.3.1.2

0.99

0.69

0.61

5.3.2

5.3.2.1

6,441,876

5,005,897

4,566,444

5.3.2.2

0.99

0.69

0.61

5.4

5.4.1

Not applicable

3,398

2,533

5.4.2

Not applicable

0.0006650

0.000482

6

Total

6.2

6.2.1

5,045

1,880

1,891

6.2.2

0.001902

0.000359

0.00036

6.3

6.3.1

8,017

1,147

1,234

6.3.2

0.003022

0.000219

0.000235

6.4

6.4.1

90.44

8.1

9.1

6.4.2

0.0000341

0.0000015

0.000002

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Resources

7

Human Resources

Total Number of Employees

Percentage of Women in Total Workforce Percentage of Minorities in Total Workforce Total Number on Board of Directors/Trustees

Percentage of Women on Board of Directors/Trustees Percentage of Minorities on Board of Directors/Trustees Employee Safety Metrics

Recordable Incident Rate Lost-time Case Rate

Days Away, Restricted, and Transfer (DART) Rate Work-related Fatalities

Fresh Water Resources used in Thermal Power Generation Activities Water Withdrawals - Consumptive (Millions of Gallons)

Water Withdrawals - Non-Consumptive (Millions of Gallons)

Water Withdrawals - Consumptive Rate (Millions of Gallons/Net MWh) Water Withdrawals - Non-Consumptive Rate (Millions of Gallons/Net MWh)

Waste Products

Amount of Hazardous Waste Manifested for Disposal (MT) Percent of Coal Combustion Products Beneficially Used

7.1

843

2,874

2,841

7.2

27%

24%

24%

7.3

9%

15%

15%

7.4

10

10

10

7.5

10%

30%

30%

7.6

10%

10%

10%

7.7

7.7.1

3.99%

1.51%

1.83%

7.7.2

0.39%

0.38%

0.65%

7.7.3

1.93%

0.65%

1.00%

7.7.4

-

0

0

8

8.1

Not available

758.92

1,022.61

2W0a2ter withdrawal ba4sed on facilities wWeaostpeerRaetep.ort

8.2

Not available

0.00

0.00

8.3

Not available

1.40E-04

1.91E-04

2In0t2ensity based on g4eneration from foWssailsftueeRl eapnodrrtenewable facilities we operate.

8.4

Not available

0.00

0.00

9

9.1

Not available

58.2

49.4

All Facilities are classified by the EPA as Very Small Quantity Generators (VSQGs) - due to low quantities of HW generation, however this value has been quantified

9.2

Not available

0%

0%

and reported. This total does not include universal waste, please see our Sustainability Report for complete waste listing.

All information and data in the EEI and AGA ESG qualitative and quantitative reports are provided on a voluntary basis and could be subject to change. These reports contain forward-looking information as defined by the Securities and Exchange Commission.

Whether actual results and developments will conform to our expectations and predictions is subject to a number of risks and uncertainties that, among other things, could cause actual results to differ materially from those contained in the forward-looking statements, including without limitation, the risk factors described in our 2024 Annual Report on Form 10-K. We assume no obligation to update publicly any such forward-looking statements, whether as a result of new information, future events or otherwise.

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