Interchange Recharged

From Hours To Days - Reinventing Long-Duration Energy Storage

Sep 1, 2023

Explore the importance of long-duration energy storage in mitigating the risk of blackouts during extreme weather events. Learn about the concept of long duration energy storage and the need for a combination of storage technologies. Discover the potential of using existing infrastructure for hydrogen blending and zero carbon gas storage. Discuss the challenges in deploying capital for energy transition technologies and the importance of setting aggressive targets for the clean energy transition.

49:24

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Quick takeaways

Reliable long-duration energy storage is crucial for mitigating the risks of blackouts during extreme weather events.

Main Spring Energy's linear generator offers a flexible and scalable solution for maintaining a clean, decarbonized grid.

Flexible, firm, dispatchable power from clean fuels like hydrogen and ammonia is essential for ensuring a reliable and resilient energy system.

Deep dives

The Importance of Reliable Energy Storage

Reliable energy storage is crucial for mitigating the risk of blackouts during extreme weather events. The study conducted by the Journal of Environmental Science and Technology emphasizes the need for long-duration storage to maintain a clean, decarbonized grid. Current battery technology is advancing rapidly, with batteries improving from 2-4 hours to 8-10 hours, heading towards the milestone of 100 hours. However, the reality is that extreme weather events create outages and capacity shortages that last longer than what current storage technology can cope with.

Introduction

2min

Long-Duration Energy Storage and its Importance in the Energy Transition

13min

Rethinking Existing Infrastructure for a Net-Zero World

11min

Advancing the Energy Transition: Regulatory Steps and Power Market Design

2min

Challenges and Tensions in Deploying Capital for Energy Transition Technologies

19min

Setting Aggressive Targets for the Clean Energy Transition

4min

A new linear generator could be the answer to the risks of extreme weather.

The prospect of an extended blackout during a heat wave is not only alarming, but a potential public health emergency. According to a recent report in the New York Times, 800,000 residents would require hospitalisation if a major heatwave coincided with an extended blackout. The study, conducted by the Journal of Environmental Science and Technology, made clear the need for reliable energy storage.

Advancements in technology are helping to mitigate the risk, with modern batteries improving their lifespans from two to four hours to a more robust eight to ten hours. Experts even predict reaching a milestone of 100-hour battery life in the near future. However, nature doesn’t keep time like we do, and extreme weather can cause outages that outlast even these improved capabilities. So how can we protect our cities and ensure sustained power during these disruptions? The answer lies in developing technologies that transition long-duration storage capacities from hours to days and beyond. The Mainspring Linear Generator, developed by Mainspring Energy, a Silicon Valley-based startup, could be one of the answers to the storage challenge.

We are joined by Mainspring CEO Dr. Shannon Miller, a Stanford alumna with a PhD in mechanical engineering.

The Mainspring Linear Generator has raised over $530 million in funding from cleantech investors and demonstrates the potential of innovative solutions in accelerating the shift towards a net-zero carbon grid. Shannon explains how it uses different types of fuel - including conventional types like natural gas - and clean fuels such as hydrogen and ammonia.

To explore the wider trends and challenges around long-duration storage, Dr Melissa Lott also joins us on the Interchange this week. Melissa is Director of the Center on Global Energy Policy at Columbia University, and she talks about the risks of gaps in power access, energy cost spikes and reliability issues. One of the key changes seen in the storage market is the separation of storage and generation solutions. As fossil fuel-based generators wind down, finding reliable and sustainable alternatives to provide reliable power becomes increasingly important.

Incentives and regulatory frameworks are integral to fostering the energy transition. Currently, however, specific types of storage, like electrochemical or thermal storage, are often prescribed in state mandates instead of leaving room for innovative alternatives. Therefore, there's a growing need for technology-neutral policies that accommodate various kinds of storage, including clean fuels.

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