Importance of long-term flexibility in a 100% renewable energy scenario for Japan

Kuriyama, Akihisa; Liu, Xianbing; Naito, Katsuhiko; Tsukui, Akibi; Tanaka, Yugo

doi:10.1007/s11625-023-01392-3

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…To achieve carbon neutrality, effort in the energy sector, which emits 85% of GHGs, is important, and Japan's 6th Basic Energy Plan sets the goal of rapidly increasing renewable energy use in the power sector in the future [25]. To achieve this goal, Japan is conducting multiple energy scenario analyses to review its power source mix with the aim of achieving decarbonisation by 2050 [26][27][28][29]. At present, solar power generation in Japan is being introduced through subsidy systems, such as the feed-in tariff (FIT) system, which started in 2012, and the amount of solar power generation rapidly increased from 6613 GWh to 94,801 GWh from 2012 to 2022 [1].…”

Section: Introductionmentioning

confidence: 99%

CO2 Emissions from Blade Waste Treatments under Wind Power Scenario in Japan from 2021 to 2100

Nogaki,

Ito,

Nakakubo

et al. 2024

Sustainability

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Wind power generation has been introduced to reduce carbon emissions; however, recycling or recovering the waste of wind blades, which contain fibre-reinforced plastic, is difficult. Converting the recovered materials for secondary use is also difficult owing to the decreased strength and low material value. Many countries, including Japan, have not considered the future energy and CO2 emission scenarios, particularly CO2 emissions from wind blade waste. Based on these scenarios, Japan has planned to introduce large amounts of onshore/offshore wind power generation through 2050. Therefore, we aimed to evaluate quantitatively the total amount of waste and the global warming potential (GWP) from multiple blade waste treatment processes. Based on the average lifetime of blades (20–25 years), we found that the GWP of wind blade waste treatment in Japan may reach a maximum of 197.3–232.4 MtCO2eq by 2060–2065. Based on this lifetime, the wind blade treatment in 2050 accounted for 63.9–80.1% of the total greenhouse gas emissions in 2050. We also showed that the rise in CO2 emissions from the wind blade wastes would make up 82.5–93.6% of the potential reduction in the GWP, which is achievable by shifting from thermal to wind power generation.

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Section: Introductionmentioning

confidence: 99%

CO2 Emissions from Blade Waste Treatments under Wind Power Scenario in Japan from 2021 to 2100

Nogaki,

Ito,

Nakakubo

et al. 2024

Sustainability

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“…'green hydrogen' production) and lack insight into hydrogen usage patterns and demand in importing countries. A few studies have explored the role of domestic and imported hydrogen in Japan's electric power system using a sector-coupling model [25], an economic power dispatch model [26,27], and electric system simulations with several grid configurations and hydrogen demand scenarios [28]. However, these studies are inadequately detailed: some only model a snapshot of 2050, while others lack realistic sensitivity to renewable energy costs and electricity demand forecasts or detailed representations of power systems.…”

Section: Introductionmentioning

confidence: 99%

The role of hydrogen as long-duration energy storage and as an international energy carrier for electricity sector decarbonization

Shiraishi,

Park,

Kammen

2024

Environ. Res. Lett.

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With countries and economies around the globe increasingly relying on non-dispatchable variable renewable energy (VRE), the need for effective energy storage and international carriers of low-carbon energy has intensified. This study delves into hydrogen’s prospective, multifaceted contribution to decarbonizing the electricity sector, with emphasis on its utilization as a scalable technology for long-duration energy storage (LDES) and as an international energy carrier. Using Japan as a case study, based on its ambitious national hydrogen strategy and plans to import liquefied hydrogen as a low-carbon fuel source, we employ advanced models encompassing capacity expansion and hourly dispatch. We explore diverse policy scenarios to unravel the timing, quantity, and operational intricacies of hydrogen deployment within a power system. Our findings highlight the essential role of hydrogen in providing a reliable power supply by balancing mismatches in VRE generation and load over several weeks and months and reducing the costs of achieving a zero-emission power system. The study recommends prioritizing domestically produced hydrogen, leveraging renewables for cost reduction, and strategically employing imported hydrogen as a risk hedge against potential spikes in battery storage and renewable energy costs. Furthermore, the strategic incorporation of hydrogen mitigates system costs and enhances energy self-sufficiency, informing policy design and investment strategies aligned with the dynamic global energy landscape.

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Accelerating actions for leveraging a climate-neutral sustainable society

Kainuma,

Gross,

Hourcade

et al. 2023

Sustain Sci

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Importance of long-term flexibility in a 100% renewable energy scenario for Japan

Cited by 4 publications

References 29 publications

CO2 Emissions from Blade Waste Treatments under Wind Power Scenario in Japan from 2021 to 2100

CO2 Emissions from Blade Waste Treatments under Wind Power Scenario in Japan from 2021 to 2100

The role of hydrogen as long-duration energy storage and as an international energy carrier for electricity sector decarbonization

Accelerating actions for leveraging a climate-neutral sustainable society

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