Life cycle CO2 emissions from power generation using hydrogen energy carriers

Ozawa, Akihito; Kudoh, Yasuhiro; Kitagawa, Naomi; Muramatsu, Ryoji

doi:10.1016/j.ijhydene.2019.02.230

Cited by 54 publications

(22 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Climate strategies based on power generation from imported hydrogen have been proposed for regions with low local renewable potential, mostly in Japan [105,106]. Additional applications include the possibility of ensuring clean energy supply to remote locations such as mines, port cities or islands with low renewable potential, such as the Arctic region [107].…”

Section: Power Generationmentioning

confidence: 99%

The Role of Green and Blue Hydrogen in the Energy Transition—A Technological and Geopolitical Perspective

et al. 2020

View full text Add to dashboard Cite

Hydrogen is currently enjoying a renewed and widespread momentum in many national and international climate strategies. This review paper is focused on analysing the challenges and opportunities that are related to green and blue hydrogen, which are at the basis of different perspectives of a potential hydrogen society. While many governments and private companies are putting significant resources on the development of hydrogen technologies, there still remains a high number of unsolved issues, including technical challenges, economic and geopolitical implications. The hydrogen supply chain includes a large number of steps, resulting in additional energy losses, and while much focus is put on hydrogen generation costs, its transport and storage should not be neglected. A low-carbon hydrogen economy offers promising opportunities not only to fight climate change, but also to enhance energy security and develop local industries in many countries. However, to face the huge challenges of a transition towards a zero-carbon energy system, all available technologies should be allowed to contribute based on measurable indicators, which require a strong international consensus based on transparent standards and targets.

show abstract

Section: Power Generationmentioning

confidence: 99%

The Role of Green and Blue Hydrogen in the Energy Transition—A Technological and Geopolitical Perspective

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The probability distribution for this is listed in Appendix A Table A1. Inputs to the power plant (x i,j ) were based on data from Ozawa et al [20]. The facility utilization rate, in-service rate, and service life of the power plant were set assuming overseas wind and sunshine conditions [20,23,27].…”

Section: Overseas Renewable Energy Power Generationmentioning

confidence: 99%

“…Inputs to the power plant (x i,j ) were based on data from Ozawa et al [20]. The facility utilization rate, in-service rate, and service life of the power plant were set assuming overseas wind and sunshine conditions [20,23,27]. The specifications of the power plant are listed in Table 1.…”

Section: Overseas Renewable Energy Power Generationmentioning

confidence: 99%

“…LCI analysis for hydrogen supply chains has been conducted in many studies on the well-to-tank greenhouse gas (GHG)/CO 2 emissions of hydrogen for mobility use [13][14][15][16][17][18][19]. In terms of LCI analysis of other applications, Ozawa et al [20] analyzed life-cycle CO 2 emissions of hydrogen and NH 3 power generation, and Chisalita et al [21] conducted a cradle-to-gate environmental assessment of European NH 3 production considering various hydrogen supply chains.…”

Section: Introductionmentioning

confidence: 99%

“…In most LCI studies, specific values are assumed for supply chain parameters [14][15][16][17][18]20,21]. However, essential technologies that compose hydrogen supply chains for power generation are still in the development and demonstration stages, and we recognize that their specification (e.g., energy input and CO 2 emissions intensity) at the practical application stage should have a certain degree of uncertainty, which have not been fully considered in previous research.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessing Uncertainties of Life-Cycle CO2 Emissions Using Hydrogen Energy for Power Generation

Ozawa

Kudoh

2021

Energies

Self Cite

View full text Add to dashboard Cite

Hydrogen and its energy carriers, such as liquid hydrogen (LH2), methylcyclohexane (MCH), and ammonia (NH3), are essential components of low-carbon energy systems. To utilize hydrogen energy, the complete environmental merits of its supply chain should be evaluated. To understand the expected environmental benefit under the uncertainty of hydrogen technology development, we conducted life-cycle inventory analysis and calculated CO2 emissions and their uncertainties attributed to the entire supply chain of hydrogen and NH3 power generation (co-firing and mono-firing) in Japan. Hydrogen was assumed to be produced from overseas renewable energy sources with LH2/MCH as the carrier, and NH3 from natural gas or renewable energy sources. The Japanese life-cycle inventory database was used to calculate emissions. Monte Carlo simulations were performed to evaluate emission uncertainty and mitigation factors using hydrogen energy. For LH2, CO2 emission uncertainty during hydrogen liquefaction can be reduced by using low-carbon fuel. For MCH, CO2 emissions were not significantly affected by power consumption of overseas processes; however, it can be reduced by implementing low-carbon fuel and waste-heat utilization during MCH dehydrogenation. Low-carbon NH3 production processes significantly affected power generation, whereas carbon capture and storage during NH3 production showed the greatest reduction in CO2 emission. In conclusion, reducing CO2 emissions during the production of hydrogen and NH3 is key to realize low-carbon hydrogen energy systems.

show abstract

Life Cycle Carbon Dioxide Emissions from Ammonia-Based Power Generation Technology

Kudoh

Ozawa

2022

CO2 Free Ammonia as an Energy Carrier

View full text Add to dashboard Cite

Life cycle CO2 emissions from power generation using hydrogen energy carriers

Cited by 54 publications

References 55 publications

The Role of Green and Blue Hydrogen in the Energy Transition—A Technological and Geopolitical Perspective

The Role of Green and Blue Hydrogen in the Energy Transition—A Technological and Geopolitical Perspective

Assessing Uncertainties of Life-Cycle CO2 Emissions Using Hydrogen Energy for Power Generation

Life Cycle Carbon Dioxide Emissions from Ammonia-Based Power Generation Technology

Contact Info

Product

Resources

About