Heliogen and Bloom Energy Demonstrate Low Cost Green Hydrogen Production; concentrated solar electrolysis and high temperature
Heliogen and Bloom Energy have succeeded demonstrated production of green hydrogen by integrating company technologies: Heliogen’s concentrated solar energy system and the Bloom electrolyser.
Heliogen’s AI-enabled concentrated solar power system is designed to create carbon-free steam, electricity and heat from abundant, renewable sunlight. When combined with Bloom’s proprietary solid oxide high temperature electrolyzer, hydrogen can be produced 45% more efficiently than low temperature PEM and alkaline electrolyzers.
Electricity represents nearly 80% of the cost of hydrogen from electrolysis. By using less electricity, hydrogen production is more economical and speeds up adoption. In addition, the ability to use heat, which is a much cheaper source of energy than electricity, further improves the profitability of green hydrogen production.
Heliogen’s concentrated solar technology is different from traditional photovoltaic solar energy; it facilitates the production of hydrogen for longer periods, operating nearly 24/7 by storing solar energy, resulting in more compact and lower cost production. Heliogen’s extended uptime technology and Bloom Energy’s ability to efficiently use heat are designed to lower the cost of green hydrogen production compared to competitive solutions.
Bloom Energy officially introduced The Bloom Chlorinator in July 2021. The Bloom Chlorinator is based on the same patented and commercially proven solid oxide technology platform used by Bloom Energy Servers to provide on-site electricity with high energy efficiency. Highly flexible, the electrolyzer offers unique advantages for deployment in a wide variety of hydrogen applications, using multiple energy sources, including intermittent renewable energy and excess heat.
Because it operates at high temperatures, the Bloom electrolyzer requires less energy to break down water molecules and produce hydrogen. As a result, Bloom Energy’s electrolyzer uses 15% less electricity than other electrolyzer technologies to produce hydrogen when electricity is the only input source.
Unlike low temperature, alkaline PEM electrolysers which primarily require electricity to produce hydrogen, the Bloom electrolyzer can take advantage of both electricity and heat to produce hydrogen. Bloom Energy’s high temperature electrolyzer technology has the potential to use up to 45% less electricity when integrated with external heat sources than low temperature PEM and alkaline electrolyzers.
Hydrogen use is expected to increase from 115 million metric tonnes currently to 500-800 million metric tonnes per year by 2050, which represents 15-20 percent of total global energy demand. Already announced hydrogen projects represent more than $ 300 billion in spending across the value chain, and analysts at McKinsey & Company expect at least $ 150 billion of that spending to be linked. hydrogen production, which Heliogen and Bloom Energy are tackling as part of their collaboration.
The companies said their successful demonstration is an important step towards the goal of replacing fossil fuels with green hydrogen in commercial and industrial applications. Responsible for more than a third of global energy consumption and a quarter of global CO22 emissions, industrial companies are particularly well suited to low-cost, large-scale use of hydrogen given their high energy needs and significant carbon emissions.
Our demonstration project with Bloom Energy represents an important step towards the large-scale production of green hydrogen, which will play an important role in the decarbonization of heavy industry. Following this successful integration of Heliogen’s near 24/7 solar steam generation with the Bloom electrolyser, we anticipate that commercial projects will also use Heliogen technology to deliver their electrical power, providing 100 percent of the thermal and electrical energy required to produce green hydrogen. .
—Bill Gross, Founder and CEO of Heliogen
Heliogen and Bloom Energy plan to continue their testing efforts and look forward to sharing more information at a future date.