Equinix pilots use of fuel cell in ‘shipping container’ outside datacenter

The Rising Need for Sustainable Backup Power in Data Centers

Data centers are critical infrastructure supporting the digital economy, but they are also significant energy consumers. In Ireland alone, data centers accounted for over 20% of the country’s electricity usage in 2023, underscoring the sector’s growing environmental footprint. As demand for cloud services, AI, and digital storage escalates, the energy requirements of data centers are expected to rise further, prompting operators to seek greener energy solutions.

Backup power is essential for data centers to maintain operational continuity during grid outages or disruptions. Traditionally, diesel generators have been the go-to solution due to their reliability and established infrastructure. However, diesel generators contribute to air pollution, carbon emissions, and noise, raising environmental and regulatory concerns. Transitioning to cleaner alternatives for backup power is therefore a priority for data center operators aiming to reduce their carbon footprint.

Hydrogen fuel cells represent a promising alternative by generating electricity through an electrochemical process that combines hydrogen and oxygen, producing only water as a byproduct. This zero-emission characteristic positions fuel cells as an attractive solution for sustainable data center power backup, aligning with global decarbonization goals and corporate sustainability commitments.

Equinix’s Pilot Project: Fuel Cell in a Shipping Container

Equinix’s demonstration unit in Dublin is a compact hydrogen fuel cell system housed inside what appears to be a standard shipping container. This modular design allows for easy transport, installation, and scalability across different data center sites. The unit is capable of delivering up to 250 kW of clean power, sufficient for backup operations during grid outages or peak demand periods.

The pilot was showcased by Peter Lantry, Managing Director of Equinix Ireland, to the company’s global Design and Operations leadership team, including the Global Head of Operations, Raouf Abdel. This hands-on demonstration emphasizes Equinix’s proactive approach to integrating innovative energy technologies within its global network of International Business Exchange (IBX) data centers.

The hydrogen fuel cell unit was supplied by ESB, Ireland’s state-owned energy company, and developed by GeoPura, a UK-based renewable energy specialist, in partnership with Siemens Energy. This collaboration leverages expertise from multiple sectors to deliver a cutting-edge solution that could redefine backup power for data centers.

Technical Insights: How Hydrogen Fuel Cells Work

Hydrogen fuel cells generate electricity through an electrochemical reaction that combines hydrogen fuel with oxygen from the air. Unlike combustion engines, this process produces electricity, heat, and water without harmful emissions. The fuel cell consists of an anode, cathode, and electrolyte membrane, facilitating the controlled flow of ions and electrons to generate power.

The key advantage of fuel cells is their high efficiency and zero carbon emissions when hydrogen is sourced sustainably. This contrasts with diesel generators that burn fossil fuels, releasing CO2 and pollutants. Fuel cells also operate quietly and require less maintenance, making them well-suited for sensitive environments like data centers.

However, the sustainability of hydrogen fuel cells depends heavily on the hydrogen production method. 'Green' hydrogen, produced via electrolysis powered by renewable energy, offers a truly carbon-free fuel source. In contrast, 'grey' hydrogen derived from fossil fuels involves significant carbon emissions. ESB’s vision includes expanding renewable energy generation in Ireland to support green hydrogen production, enhancing the environmental benefits of fuel cell technology.

Environmental and Operational Benefits for Data Centers

Replacing diesel generators with hydrogen fuel cells offers immediate environmental benefits by reducing carbon emissions, air pollutants, and noise pollution. This aligns with the data center industry’s increasing focus on sustainability and compliance with stricter environmental regulations. Using fuel cells can also improve corporate social responsibility profiles and attract eco-conscious clients.

Operationally, fuel cells provide reliable backup power with fast start-up times, ensuring minimal disruption during power outages. Their modular design allows for scalability and integration with existing power infrastructure. Additionally, fuel cells generate less waste heat, reducing cooling requirements and associated energy costs within data centers.

Equinix’s pilot project reflects a broader trend of data center operators adopting innovative technologies to enhance energy efficiency and resilience. By demonstrating real-world application, Equinix is paving the way for wider adoption of fuel cells as a mainstream backup power solution.

Global Industry Trends and Comparable Initiatives

Equinix’s pilot is part of a growing global movement towards hydrogen fuel cell adoption in data centers. For instance, Dutch operator NorthC has been employing hydrogen fuel cells as backup power since 2021, replacing traditional diesel generators. Similarly, Microsoft experimented with hydrogen fuel cells in 2020, exploring their feasibility for scalable data center power solutions.

In 2023, SK Ecoplant, a division of South Korea’s SK Group, announced plans for a large data center in Ireland powered entirely by fuel cells, located west of Dublin. This illustrates increasing international interest in fuel cell technology to meet sustainability targets while supporting expanding data infrastructure.

Collaborations between energy providers, technology companies, and academic institutions are accelerating innovation. Equinix’s partnership with the National University of Singapore in 2022 and the recent Honda-Mitsubishi project testing repurposed vehicle fuel cells demonstrate the sector’s commitment to exploring diverse fuel cell applications.

Challenges and Considerations in Fuel Cell Deployment

Despite promising benefits, deploying hydrogen fuel cells in data centers faces several challenges. The availability and cost of green hydrogen remain significant barriers, as large-scale production infrastructure is still under development. Additionally, hydrogen storage and safety protocols require careful management due to hydrogen’s flammability.

Integration with existing data center power systems also demands rigorous testing to ensure reliability and compliance with industry standards. Fuel cell technology must demonstrate consistent performance under varying load conditions to gain operator confidence as a primary backup source.

Regulatory frameworks and incentives will play a pivotal role in accelerating adoption. Supportive policies encouraging renewable hydrogen production and clean energy technologies can reduce costs and foster market growth, enabling wider implementation of fuel cells across the data center industry.

Future Outlook: Scaling Fuel Cell Use in Data Centers

Equinix has confirmed plans to expand fuel cell technology trials beyond the current pilot, aiming to develop full-scale data center solutions powered by hydrogen fuel cells. This phased approach allows the company to evaluate performance, optimize integration, and build operational expertise over time.

As renewable energy capacity grows and green hydrogen production scales up, fuel cells are expected to become more economically viable and environmentally attractive. Data center operators are likely to increasingly incorporate fuel cells into their energy resilience strategies, reducing reliance on fossil fuels and enhancing sustainability.

Continued innovation and collaboration among technology providers, energy companies, and regulators will be crucial to overcoming current limitations. The success of pilots like Equinix’s demonstration unit signals a transformative shift towards cleaner, more resilient data center infrastructure worldwide.

Conclusion

Equinix’s pioneering pilot of hydrogen fuel cell technology housed in a shipping container represents a significant advancement in sustainable backup power for data centers. By collaborating with ESB, GeoPura, and Siemens Energy, Equinix is demonstrating the practical viability of this clean energy solution in a real-world setting. While challenges remain around hydrogen production, cost, and integration, the environmental and operational advantages position fuel cells as a compelling alternative to diesel generators. As the data center industry intensifies its focus on decarbonization and energy resilience, such innovative pilots pave the way for broader adoption of hydrogen fuel cells globally, contributing to a greener digital future.