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FOR IMMEDIATE RELEASE

Caterpillar Demonstrates Viability of Using Hydrogen Fuel Cell Technologyfor Backup Power at Microsoft Data Center
Demonstration marks significant progress toward providing data centerswith reliable and sustainable backup power with hydrogen technology
IRVING, Texas, Jan. 19, 2024 – Caterpillar Inc. (NYSE: CAT) announced the success of its
collaboration with Microsoft and Ballard Power Systems to demonstrate the viability of usinglarge-format hydrogen fuel cells to supply reliable and sustainable backup power for datacenters. The demonstration provided valuable insights into the capabilities of fuel cell systems topower multi-megawatt data centers, ensuring uninterrupted power supply to meet 99.999%
uptime requirements.

The demonstration was conducted in a challenging environment and validated the hydrogen fuelcell power system’s performance at 6,086 ft (1,855 m) above sea level and in below-freezing
conditions. The project simulated a 48-hour backup power event at Microsoft's data center in
Cheyenne, Wyoming, where a hydrogen fuel cell was integrated into a data center electrical plantto support its critical load. A Caterpillar Microgrid Controller was used to operate two Cat®
Power Grid Stabilization (PGS) 1260 battery energy storage systems along with the 1.5 MWhydrogen fuel cell.

Caterpillar led the project, providing the overall system integration, power electronics, andmicrogrid controls that form the central structure of the hydrogen power solution. “This(more)

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successful collaboration with Microsoft and Ballard demonstrates the potential of hydrogen fuelcells to help data centers address their critical power needs while reducing their emissions,” said
Jaime Mineart, senior vice president of Caterpillar Electric Power.
“This project’s success provides an opportunity for hyperscale providers to drive innovations inthe sustainability of power generation technologies,” said Sean James, senior director of data
center research at Microsoft. “The research and findings of the hydrogen fuel cell demonstration
will help us towards our goal of becoming carbon negative by 2030.”

The project is supported and partially funded by the U.S. Department of Energy Hydrogen andFuel Cell Technologies Office (DOE) under the H2@Scale initiative, which brings stakeholders
together to advance affordable hydrogen production, transport, storage and utilization in multiple
energy sectors. During the demonstration, the DOE’s National Renewable Energy Laboratory(NREL) analyzed safety, techno-economics, and greenhouse gas (GHG) impacts.
“We see the completion of this demonstration as an important proof point of the reliability anddurability of Ballard’s fuel cells in providing zero-emission backup power for data centers,” said
David Mucciacciaro, Chief Commercial Officer of Ballard Power Systems. “We are excitedabout the ability of our products to meet the critical power needs of data center customers in this
rapidly growing sector.”###About Caterpillar
With 2022 sales and revenues of $59.4 billion, Caterpillar Inc. is the world’s leading
manufacturer of construction and mining equipment, off-highway diesel and natural gas engines,
industrial gas turbines and diesel-electric locomotives. For nearly 100 years, we’ve been helping
customers build a better, more sustainable world and are committed and contributing to a
reduced-carbon future. Our innovative products and services, backed by our global dealer
network, provide exceptional value that helps customers succeed. Caterpillar does business on
every continent, principally operating through three primary segments – Construction Industries,
Resource Industries and Energy & Transportation – and providing financing and related services
through our Financial Products segment. Visit us at caterpillar.com or join the conversation on
our social media channels at caterpillar.com/en/news/social-media.html.
Acknowledgement
This material is based upon work supported by the U.S. Department of Energy’s Office of(more)

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Energy Efficiency and Renewable Energy (EERE) under the Hydrogen and Fuel Cell
Technologies Office, H2@Scale Initiative, Award Number DEEE0009252. The views expressedherein do not necessarily represent the views of the U.S. Department of Energy or the UnitedStates Government.

Caterpillar Public Release#