Why Larry Fink Says Data Centres Can’t Rely Solely on Renewable Energy

Larry Fink, the founder and CEO of BlackRock, the world’s largest investment fund, recently highlighted a critical challenge facing the data centre industry and other large industrial power consumers: the need for reliable, dispatchable energy sources. At the World Economic Forum in Davos, Fink emphasized that while renewable energy is essential for a sustainable future, it alone cannot meet the continuous and high-demand power requirements of data centres, especially those supporting artificial intelligence (AI) workloads. This perspective aligns with growing concerns within the power sector about the limitations of renewables in providing consistent energy supply.

Data centres, which house the servers and infrastructure powering AI and cloud computing, require vast amounts of electricity that must be available on demand. Unlike residential or less energy-intensive commercial users, these facilities cannot tolerate interruptions or variability in power supply. Renewable sources such as solar and wind are inherently intermittent, dependent on weather and daylight conditions, which makes them insufficient as the sole energy providers for such critical infrastructure. Dispatchable power sources—those that can be turned on or off or adjusted to meet demand—are therefore indispensable.

In Australia, this reality has significant implications for the country’s energy policy and transition plans. Despite ambitious goals to increase renewable energy penetration, the need for stable, dispatchable power means that coal-fired power plants are likely to remain operational longer than initially anticipated. This is because coal plants currently provide reliable baseload power that renewables cannot fully replace without substantial advances in energy storage or alternative dispatchable technologies. The conversation about extending coal’s role is complex and contentious, but it underscores the practical challenges of balancing decarbonization goals with the operational demands of large industrial users.

Moreover, the debate around energy sources for data centres and industrial power users extends beyond coal and renewables. Nuclear energy, which offers a low-carbon and highly reliable power source, remains a contentious topic in Australia and globally. While nuclear power could theoretically provide the dispatchable energy needed to support AI and other high-demand sectors, political, economic, and social factors have so far limited its adoption. The discussion about nuclear energy’s role is likely to intensify as countries seek to reconcile energy reliability with climate commitments.

Larry Fink’s remarks serve as a reminder that the energy transition is not a simple switch from fossil fuels to renewables. It requires a nuanced approach that considers the unique demands of different sectors, technological capabilities, and the current limitations of renewable energy infrastructure. For data centres and AI, which are poised to grow rapidly and drive significant economic value, ensuring a stable power supply is paramount. Policymakers and industry leaders must therefore collaborate to develop energy strategies that integrate renewables with dispatchable power sources, whether through coal, nuclear, or emerging technologies like advanced battery storage and hydrogen.

In summary, the future of data centre energy consumption highlights the broader challenges of the global energy transition. While renewables are vital for reducing carbon emissions, they cannot yet fully support the continuous, high-demand power needs of AI and large industrial users. Australia’s experience, including the ongoing reliance on coal and the debate over nuclear power, exemplifies the complexities involved. Larry Fink’s candid acknowledgment of these issues at Davos brings much-needed attention to the practical realities underpinning the shift to sustainable energy systems.