The role of hydrogen in a net-zero emission economy under alternative policy scenarios

Kouchaki-Penchah, Hamed; Bahn, Olivier; Bashiri, Hamed; Bédard, Serge; Bernier, Etienne; Elliot, Thomas; Hammache, A.; Vaillancourt, Kathleen; Levasseur, Annie

doi:10.1016/j.ijhydene.2023.07.196

Cited by 25 publications

(4 citation statements)

References 30 publications

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“…That's important to consider .” Our experts’ statements are validated by further research, underscoring that only when hydrogen is produced from low-emissions sources, will residual CO 2 emissions be substantially removed. 178–181 Accounting for residual emissions is important because they are often not well-defined quantitatively and/or conceptually. Thus, stakeholders could struggle to communicate signals regarding the temporality of fossil fuel use.…”

Section: Results: Drivers Benefits Risks and Just Transitionsmentioning

confidence: 99%

Reconfiguring European industry for net-zero: a qualitative review of hydrogen and carbon capture utilization and storage benefits and implementation challenges

Sovacool,

Del Rio,

Herman

et al. 2024

Energy Environ. Sci.

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Section: Results: Drivers Benefits Risks and Just Transitionsmentioning

confidence: 99%

Reconfiguring European industry for net-zero: a qualitative review of hydrogen and carbon capture utilization and storage benefits and implementation challenges

Sovacool,

Del Rio,

Herman

et al. 2024

Energy Environ. Sci.

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“…which was sequestered during the forest growth stage. Alternatively, the timber may be incinerated to substitute fossil energy or repurposed for feedstock in other energy transition sectors [61], thereby offsetting GHG emissions. While these factors make the end-of-life stage critical to understanding the net biogenic contribution to the GWP of forest-based building materials, there are multiple unknowns pertaining to future recycling, reuse, and circularity of building materials.…”

Section: Biogenic Ghg Estimationmentioning

confidence: 99%

The carbon footprint of future engineered wood construction in Montreal

Meyer,

Elliot,

Craig

et al. 2024

Environ. Res.: Infrastruct. Sustain.

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Engineered wood (EW) has the potential to reduce global carbon emissions from the building sector by substituting carbon-intensive concrete and steel for carbon-sequestering wood. However, studies accounting for material use and embodied carbon in buildings rarely analyze the city-scale or capture connections between the city and supplying hinterlands. This limits our knowledge of the effectiveness of decarbonizing cities using EW and its potential adverse effects, such as deforestation. We address this gap by combining bottom-up material accounting of construction materials with life cycle assessment to analyze the carbon emissions and land occupation from future residential construction in Montreal, Canada. We compare material demand and environmenetal impacts of recent construction using concrete and steel to construction using EW at the neighborhood, urban scales under high- and low-density growth scenarios. We estimate that baseline embodied carbon/capita across the Agglomeration of Montreal is 3.2 tonnes/carbon dioxide equivalents (CO2eq.), but this ranges from 8.2 tonnes CO2eq./capita in areas with large single-family housing to 2.0 tonnes CO2eq./capita where smaller homes predominate. A Montreal-wide transition to EW may increase carbon footprint by up to 25% under certain scenarios, but this varies widely across the city and is tempered through urban densification. Likewise, a transition to EW results in less than 0.001% land transformation across Quebec’s timbershed. Moreover, sustainable logging practices that sequester carbon can actually produce a carbon-negative building stock in the future. To decarbonize future residential construction, Montreal should enact policies to simultaneously promote EW and urban densification in future construction and work with construction firms to ensure they source timber sustainably.

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“…2,3 Among the array of sustainable options, electrocatalytic water splitting powered by renewables has emerged as a promising avenue for efficient hydrogen production, holding significant potential for mitigating greenhouse gas emissions and advancing the transition towards a low-carbon economy or hydrogen economy. 4–6 While the concept of electrochemical water splitting is not new, recent advancements have spurred increased interest, particularly in alkaline water electrolysis. 7–9 This method has gained traction as the preferred approach for large-scale industrial hydrogen production due to its commercial availability and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

An advanced Ru-based alkaline HER electrocatalyst benefiting from Volmer-step promoting 5d and 3d co-catalysts

Ramaprakash,

Neppolian

et al. 2024

Dalton Trans.

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The role of hydrogen in a net-zero emission economy under alternative policy scenarios

Cited by 25 publications

References 30 publications

Reconfiguring European industry for net-zero: a qualitative review of hydrogen and carbon capture utilization and storage benefits and implementation challenges

Reconfiguring European industry for net-zero: a qualitative review of hydrogen and carbon capture utilization and storage benefits and implementation challenges

The carbon footprint of future engineered wood construction in Montreal

An advanced Ru-based alkaline HER electrocatalyst benefiting from Volmer-step promoting 5d and 3d co-catalysts

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