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Begin New Search Topic Environment Political Geography Global Focus Publishing Institution Belfer Center for Science and International Affairs, Harvard University Publication Year within 3 Years Publication Year within 10 Years

1. Technological Innovation and the Future of Energy Value Chains

Author:
Nicola De Blasio
Publication Date:
04-2022
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
The transition from energy systems dominated by fossil fuels1 to ones based on renewable electricity and carbon-free molecules will significantly impact existing value chains2 and forge new pathways and transformation steps from production to consumption. This transition will bring not only substantial cost challenges but also promises to dramatically alter stakeholders’ interactions along value chains. Technological innovation is driving dynamics not seen in the energy sector since the Industrial Revolution, and it will be key to accelerating the transition to a low-carbon economy while sustaining growth and achieving prosperity for all. But as new technologies develop to meet growing energy needs, understanding how these technologies will impact existing energy value chains is crucial for navigating the energy transition successfully. To elucidate these dynamics, we must first identify the key technologies3 driving disruptive change and then understand how their deployment at scale might impact existing value chains or cause new ones to emerge.
Topic:
Environment, Natural Resources, Innovation, Renewable Energy, Value Chains, Hydrogen, and Energy
Political Geography:
Global Focus

2. The Role of Blockchain in Green Hydrogen Value Chains

Author:
Nicola De Blasio and Charles Hua
Publication Date:
11-2021
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
A rainbow of colors currently dominates almost every conversation on the transition to a low-carbon economy: green, grey, blue, turquoise, pink, yellow[1] - an ever-increasing palette to describe the same colorless, odorless, and highly combustible molecule, hydrogen. The only difference is the chemical process used to produce it. The colors of hydrogen are crucial for the energy transition because each production pathway generates different amounts of greenhouse gas emissions. For example, while grey hydrogen, produced from fossil fuels, yields up to 20 tons of carbon dioxide per ton of hydrogen, green hydrogen, produced from renewable energy sources like solar and wind, yields no emissions. Furthermore, although these colors all refer to the same molecule, production costs differ: green hydrogen remains substantially more costly today. With aggressive development and deployment of electrolyzers and other hydrogen technologies at scale, green hydrogen could become cost-competitive with blue hydrogen, produced from natural gas with carbon capture, by 2030 in many countries.[2] Overall, the rate at which green hydrogen costs decrease will also depend on government policies and incentives, such as carbon pricing and tax credits. Therein lies a critical challenge for the successful transition to a low-carbon economy. As energy systems increasingly evolve from centralized to decentralized, from “grey” to “green,” stakeholders will need to efficiently account for and track emissions and green molecules in a transparent, secure, and standardized way, and must be able to do so along value chains from production to consumption.
Topic:
Environment, Science and Technology, Natural Resources, Innovation, Renewable Energy, Hydrogen, and Energy
Political Geography:
Global Focus

3. Sustainable Mobility: Renewable Hydrogen in the Transport Sector

Author:
Nicola De Blasio, Charles Hua, and Alejandro Nuñez-Jimenez
Publication Date:
06-2021
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
The transportation sector is the second-largest source of CO2 emissions, after electricity and heat generation, accounting for about 25 percent of global emissions.1 However, it is also one of the most challenging to decarbonize due to its distributed nature and the advantages of fossil fuels in terms of high energy densities, ease of transportation, and storage. Moreover, the degree of difficulty in decarbonizing varies significantly across the sector, making the challenge even more daunting. So far, emissions reduction strategies have focused on improving vehicle and system-wide efficiencies, mode switching, and electrification. The latter is proving relatively easy for smaller vehicles that travel shorter distances and carry lighter loads. However, sector-wide decarbonization pathways will require a transition to low-carbon fuels and the deployment of enabling infrastructure to support innovation at scale. Renewable hydrogen holds promise in sustainable mobility applications, whether by powering fuel-cell electric vehicles (FCEVs) like cars, trucks, and trains or as a feedstock for synthetic fuels for ships and airplanes. Fuel cells convert hydrogen-rich fuels into electricity through a chemical reaction. FCEVs use a fuel cell, rather than a battery, to power electric motors, and operate near-silently and produce no tailpipe emissions. Hydrogen-powered vehicles offer key advantages, including shorter refueling times, longer ranges, and a lower material footprint compared to lithium battery-powered alternatives. However, high costs of ownership and a lack of enabling infrastructure are key challenges that must be addressed through policy support, technological innovation, and financial investment. Hydrogen can complement existing efforts to electrify road and rail transportation and provide a scalable option for decarbonizing shipping and aviation. Figure 1 summarizes the mobility segments for which battery electric vehicles (BEVs), FCEVs, and vehicles running on bio- or hydrogen-based synthetic fuels are most applicable.
Topic:
Energy Policy, Environment, Natural Resources, Renewable Energy, Transportation, and Hydrogen
Political Geography:
Global Focus