Content Provider for Newsweek
Ravi Prasher

Ravi Prasher

CTO
Bloom Energy
12 September 2024

Can you discuss the recent advancements in Bloom Energy's solid oxide electrolyzer technology?

Certainly. The electrolyzer technology at Bloom Energy involves breaking down molecules, such as water or steam, using electricity to separate hydrogen and oxygen. The key factor is the amount of energy required to perform this process, which varies with temperature. Higher temperatures reduce the energy needed for electrolysis, making the process more efficient. Our solid oxide electrolyzer operates at temperatures over 750 degrees Celsius, providing a significant efficiency advantage over low-temperature electrolyzers like PEM (proton exchange membrane) and alkaline technologies.

The term "solid oxide" comes from the electrolyte material in the fuel cell that allows only oxygen ions to pass through. This high-temperature operation makes our electrolyzers 20-25% more energy-efficient, producing more hydrogen per unit of electricity compared to low-temperature alternatives. This efficiency is crucial because electricity cost is a dominant factor in the overall cost of hydrogen production.

Can you expand on Bloom Energy’s recent demonstration at NASA?

Yes, we have conducted two notable demonstrations. The first was at the Idaho National Laboratory, a premier U.S. Department of Energy lab, where we tested our electrolyzer for over 10,000 hours. This independent testing confirmed our electrolyzer as the most efficient they have ever evaluated. The second demonstration, conducted at NASA Moffett Field site in San Francisco Bay Area, was on a much larger scale, starting with a 4-megawatt system and now expanding to 5 megawatts. This project began last May and demonstrated our technology's scalability and efficiency, even at larger scales.

We completed this project in just two months, showcasing the modularity and flexibility of our technology. This rapid deployment was possible due to our platform's design, which is based on the same fuel cell technology we utilize for power generation. The consistent efficiency between our smaller systems tested at Idaho National Lab and the larger NASA systems validates the scalability and robustness of our technology.

What are Bloom Energy's strategies for scaling hydrogen production, especially with the new production lines in California and Delaware?

At Bloom Energy, we have two primary production facilities: one in the Bay Area for manufacturing the core components of our systems, and another in Delaware for assembling the complete products. This setup allows us to efficiently scale production. Currently, our Fremont factory can produce up to 2 gigawatts worth of electrolyzers annually, with plans to expand to 8 gigawatts.

This capacity positions us to meet significant demand as the hydrogen market develops. However, the full hydrogen ecosystem, including production, transportation, storage, and usage, needs to be established to support large-scale adoption. While we are ready on the production front, the broader infrastructure must also evolve to realize the hydrogen economy's potential.

How does Bloom Energy address the challenge of power storage, particularly for day-to-night and seasonal variations?

Hydrogen offers a flexible solution for energy storage, akin to natural gas. It can be used both for power production and as a chemical feedstock for various industries.

The storage needs vary depending on the application. For continuous processes like chemical production, minimal storage is required. However, for power applications, seasonal storage is crucial.

Currently, storage solutions like natural and salt caverns are being explored for hydrogen. Developing cost-effective, geographically independent storage methods remains a challenge. While our focus is on producing hydrogen, we closely monitor advancements in storage technologies to ensure we can support various applications efficiently.

How important are partnerships in driving the hydrogen economy, and how did key partnerships with organizations like Southern California Gas Company, SK Ecoplant, and Shell come about?

Partnerships are essential for the hydrogen economy's success. The energy transition is a complex process that requires collaboration across various sectors. For example, SK Ecoplant in Korea knows the local market and policies well, helping us deploy nearly 500 megawatts of fuel cells there. This partnership also builds confidence for hydrogen electrolyzers.

Shell, as a major player in the chemical industry, offers valuable insights and infrastructure for hydrogen's chemical applications. Similarly, Southern California Gas Company explores hydrogen blending with natural gas, leveraging existing infrastructure. These collaborations enable us to address different aspects of the hydrogen value chain effectively.

What impact do federal investments and policies have on green hydrogen, particularly with initiatives like the hydrogen production tax credits from the Inflation Reduction Act?

Federal investments and policies, such as those in the Inflation Reduction Act (IRA), are crucial for advancing green hydrogen. These initiatives spur innovation and market penetration, driving down costs over time. The goal is to reach a competitive hydrogen cost, around $1 per kilogram, which would make hydrogen viable for various applications, from power production to chemical manufacturing.

The IRA and similar policies provide the necessary support to accelerate this transition, ensuring that hydrogen becomes a mainstream, cost-effective solution. We fully support these policy tools, as they are vital for achieving the scale and affordability needed for a sustainable hydrogen economy.

What is Bloom Energy's long-term vision for decarbonization, and how do you see your technology fitting into this landscape?

Bloom Energy's technology is designed to be future-proof, capable of adapting to various energy sources and needs. Our electrolyzers can use renewable, geothermal, or nuclear electricity to produce hydrogen, while our fuel cells can operate on natural gas with the ability to do carbon capture, hydrogen, or biogas. This flexibility allows us to offer solutions that range from low to zero emissions.

Our vision is to support the transition to a carbon-free economy by providing versatile, efficient energy solutions. As the market evolves, our technology can seamlessly integrate new developments, ensuring we remain at the forefront of the decarbonization effort. By continuously innovating and adapting, we aim to play a key role in achieving a sustainable energy future.