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Begin New Search Topic Environment Content Type Policy Brief Publishing Institution Belfer Center for Science and International Affairs, Harvard University Publication Year within 5 Years Publication Year within 3 Years

1. The Science of Rapid Climate Change in Alaska and the Arctic: Sea Ice, Land Ice, and Sea Level

Author:
John P. Holdren
Publication Date:
08-2023
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
The Earth’s surface north of the Arctic Circle, which includes nearly a third of Alaska, is warming 3-4 times faster than the global average.1 Alaska as a whole is warming twice as fast as the lower 48 states.2 As is true for most of the manifestations of anthropogenic climate change, moreover, the extremes of temperature are growing faster than the averages: the highest-ever temperature north of the Arctic Circle—100.4°F—was recorded in Verkhoyansk, Siberia, in June 2020;3 Anchorage reached an all-time high of 90°F on July 4, 2019;4 and Utqiavgik, Alaska, the northernmost U.S. city, reached an all-time winter high of 40°F in December 2022.5 The reasons warming is so fast in the Far North are quite well understood scientifically. The most important factor is the ice-snow-albedo feedback, in which warming reduces the area of land and water covered by ice and snow, which means less reflectivity and more absorption of incident solar energy at the surface, hence further warming.
Topic:
Climate Change, Environment, Carbon Emissions, and Sea Ice
Political Geography:
North America, Alaska, Arctic, and United States of America

2. The Offsetting Mechanism in Guangdong Province’s ETS: Lessons Learned and the Way Forward

Author:
Yang Shu
Publication Date:
02-2022
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
As one of the first low-carbon pioneering provinces in China, Guangdong launched its carbon market in 2013. An important design feature of the Guangdong Province emissions trading system (ETS) has been the use of offset credits. This brief, in both Chinese and English, explores the Guangdong ETS’s offset mechanism and its possible future evolution. The brief builds on discussions in an online research workshop on Guangdong Province’s ETS, conducted June 16 – 17, 2021 by the Harvard Project on Climate Agreements and the Research Center for Climate Change, Guangdong University of Technology, directed by Professor Zeng Xuelan. Information on the workshop, including the agenda, participant list, and most presentations, is here. The Harvard Project’s initiative on Guangdong Province’s ETS is supported by Energy Foundation China.
Topic:
Climate Change, Environment, and Carbon Emissions
Political Geography:
Asia-Pacific

3. Increasing the Emissions-Reduction Efficiency of Carbon Trading Schemes in China Under the “30.60” Target: Reflection on the Carbon Markets of Guangdong Province, China

Author:
Chen Shaoqing
Publication Date:
03-2022
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
Key Points: • Guangdong currently has two pilot carbon-emissions-trading markets (in Shenzhen — and in Guangzhou, for the remainder of Guangdong Province). The Guangdong—Hong Kong—Macao Greater Bay Area (GBA) carbon market will be established in the near future. Therefore, Guangdong Province has regional advantages in innovation in the low-carbon field. • In September 2020, China announced its intention to peak carbon emissions by 2030 and achieve carbon neutrality by 2060. To meet its responsibilities under the “30.60” target, GBA needs to choose a less costly and more efficient way to reduce emissions, build resilience to climate impacts, and promote green economic recovery from the COVID-19 pandemic. • In terms of accounting methods, life-cycle accounting from production and consumption perspectives should be the methodological basis for cities, parks, and enterprises to participate in carbon trading. • Trading activity in China’s carbon markets needs to be increased. In the future, carbon markets can gradually be opened to small and medium-sized enterprises and individuals, and cross-border trade can also be included in carbon trading mechanisms, with proper risk management. • At present, carbon quotas in local pilots and the national market are allocated freely. In the future, a reasonable mix of auctioned allocation and free allocation can be considered to establish a transparent, fair, and dynamic carbon-quota-allocation mechanism. • After starting with the electricity industry, the national carbon market will continue to include other key high-carbon industries; China should seek balanced development between local pilots and the national carbon market to improve the efficiency of emission reduction.
Topic:
Climate Change, Environment, Carbon Emissions, and Air Pollution
Political Geography:
Asia-Pacific

4. 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

5. Carbon Capture, Utilization, and Storage: Technologies and Costs in the U.S. Context

Author:
Jonathan M. Moch, William Xue, and John P. Holdren
Publication Date:
01-2022
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
The Biden administration has set a goal of reaching net zero economy-wide greenhouse gas emissions by 2050.1 Carbon capture, utilization, and storage (CCUS)—a suite of current and emerging technologies that remove carbon dioxide emissions (CO2) from energy or industrial processes and then either sequester the carbon underground or use it for production of a variety of fuels or products2—is very likely to be a key technology on most of the plausible paths for reaching this goal. Among various applications of the technology, CCUS in combination with natural gas powerplants can be used to provide firm baseload electricity or could serve as backup for intermittent renewable power in place of multi-day electricity storage.3 Additionally, CCUS could be used to decarbonize hard-to-electrify industrial processes4 and to provide synthetic fuels for decarbonizing nonelectric energy uses.5 The key barrier to CCUS filling these various roles and living up to its technical potential is high costs relative to current incentives: despite current U.S. government support through tax policy, CCUS is not economically competitive today in most of its applications. Unless and until it becomes so or is required by law, it will not achieve widespread deployment.
Topic:
Environment, Science and Technology, Natural Resources, Coal, Carbon Emissions, and Energy
Political Geography:
North America and United States of America

6. The Challenges of Decarbonizing the U.S. Electric Grid by 2035

Author:
Jonathan M. Moch and Henry Lee
Publication Date:
02-2022
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
The Biden administration has established a national goal of 100% carbon-free electricity by 2035 and reaching net-zero economy-wide greenhouse gas emissions by 2050.1 To realize these goals, the United States must not only transition the production of power, but also build thousands of miles of upgraded or new transmission. The U.S. electric grid consists of 600,000 miles of transmission lines connected to over 1 million megawatts of electricity generation capacity.2 Over 70% of these lines are more than 25 years old, well into their approximately 50-year lifetime.3 Furthermore, to meet President Biden’s 2050 goal, experts claim that over a million miles of new transmission will have to be built over a three-decade time span.4 Most plausible pathways to net-zero emissions call for the electrification of multiple services, such as heating and transportation.5 The resulting increase in electricity demand will require major upgrades to the grid, with some studies suggesting a 60% increase in peak demand by 2050.6 In the United States, the greatest potential wind energy resources are in the Midwest and along the two coasts,7 while the greatest solar energy resources are in the Southwest and in Florida.8 New transmission lines will be needed to carry the electricity from the areas where the renewable resources are most plentiful to distant load centers.
Topic:
Energy Policy, Environment, Natural Resources, Electricity, Decarbonization, and Energy
Political Geography:
North America and United States of America

7. 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

8. The European Union at a Crossroads: Unlocking Renewable Hydrogen’s Potential

Author:
Nicola De Blasio and Alejandro Nuñez-Jimenez
Publication Date:
11-2021
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
European countries are at a crossroads on their path to carbon neutrality. Today, they are at the forefront of the global clean hydrogen race but going forward they would be better served by collaborating instead of working alone. Overall, the European Union (EU) is highly competitive in clean technologies manufacturing and thus well-positioned to benefit from the emergence of global hydrogen markets. But a narrow focus on short-term cost considerations could drive member states to implement national roadmaps with little or no coordination among themselves and hence little or no chance of competing globally. As a bloc, the EU has pledged to reach carbon neutrality by 2050. Clean hydrogen is a cornerstone of this transformational effort; accordingly, in July 2020, the EU adopted its hydrogen strategy with the ambition of deploying open and competitive clean hydrogen markets for all energy sectors and segments by 2050.1 Success hinges around implementing a cohesive long-term strategy to address a fundamental ques- tion and its associated challenges: where could the EU source competitive and secure renewable hydrogen supplies? As our previous research shows, all countries have access to renewable resources (such as solar or wind), to different degrees, and could produce some renewable hydrogen locally. However, while resource-rich countries, such as Spain, could evolve into regional exporters, no EU member state has the potential to become a global export champion. At the same time, North African countries, such as Morocco, are well-situated to act as key suppliers to the EU. Furthermore, imports from resource-rich regions like North America could help to address security of supply concerns.2 Today, EU hydrogen demand stands at 7.8 million tons per year (Mt/yr), equivalent to about 10% of global demand. Germany and the Netherlands are the largest consumers, accounting for over a third of EU demand, followed by Poland, Spain, Italy, Belgium, and France, which consume about 0.5 Mt/yr each.3 According to available projections, as hydrogen use grows across all economic sectors, EU hydrogen demand could reach 76 Mt/yr by 2050. But while the EU strategy sets clear targets on electrolyzer deployment by 2030, it provides very few details on how the bloc could meet demand—and at what cost—by 2050.
Topic:
Economics, Environment, Science and Technology, Natural Resources, European Union, Innovation, Hydrogen, and Energy
Political Geography:
Europe

9. Offshore Wind in the Eastern United States

Author:
Katie Segal and Henry Lee
Publication Date:
12-2021
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
In the last decade, many states set ambitious goals to decarbonize their energy portfolios. Seven states along the Atlantic coast are pursuing 100% clean electricity targets, while others have adopted stringent emissions reduction targets.1 Realizing these goals requires scaling wind, solar, and other renewable resource electricity generation at rates three to four times recent levels. If wind is to play a significant role in decarbonizing the electricity sector in the densely populated northeast section of the United States, a substantial proportion of the investment must occur offshore, as onshore wind speeds and available land area are limited. Some states have taken an additional step by establishing specific offshore wind targets. For example, New York's 2019 Climate Leadership and Community Protection Act contains a goal of 9,000 MW of offshore wind by 2035.2 This policy brief examines the economic and technical feasibility of substantial wind generation development along the Eastern Seaboard.
Topic:
Environment, Natural Resources, Renewable Energy, and Energy
Political Geography:
North America and United States of America

10. China: The Renewable Hydrogen Superpower?

Author:
Nicola De Blasio and Fridolin Pflugmann
Publication Date:
05-2021
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
President Xi Jinping’s pledge during the 2020 United Nations General Assembly, that China would reach peak carbon dioxide emissions by 2030 and achieve carbon neutrality before 2060, is a significant step in the fight against climate change. Since China is the world’s top contributor of greenhouse gases, there is no doubt that Beijing needs to be front and center of any effort to curb global emissions. In 2019, China accounted for almost 30 percent of global emissions, about twice as much as the second largest emitter, the United States.1 But while U.S. emissions have been on an overall decline since 2007,2 China’s have increased, raising concerns over whether Beijing can actually deliver on its targets. This reality should not distract from the fact that China is also the world’s top developer of renewables and other clean energy technologies. For example, China was the world’s largest installer of photovoltaics (PV) by 2013 and, in less than two years, also became the global leader in solar module manufacturing. At the same time, China leveraged its industrial might and economies of scale to drive down modules’ costs—which, by the end of 2018, were 90 percent lower than only ten years before. In this context, renewable hydrogen could significantly accelerate China’s transition to a low-carbon economy, increasing the likelihood of meeting its carbon neutrality goal. Renewable hydrogen offers significant advantages for China. It can help Beijing meet its climate and pollution goals—at a time when coal continues to dominate—while avoiding increased reliance on imported fuels. As a readily dispatchable means of storing energy, hydrogen can help to address intermittency and curtailment issues as renewable energy increases its share of China’s energy mix. As a sustainable mobility energy carrier, it can power fuel-cell electric vehicles or be the base for synthetic fuels. Finally, renewable hydrogen can open new avenues for developing clean technology manufactured goods for both internal and export markets. Today, most of China’s hydrogen is produced from coal via 1,000 gasifiers, accounting for 5% of the country’s total coal consumption. Hydrogen costs vary significantly as a function of production technology and prices of fossil fuels and electricity. Production from coal remains the lowest cost option: about 30 percent cheaper than hydrogen from natural gas. Therefore, reducing the carbon footprint of coal-based hydrogen will be critical in a low-carbon economy. In the medium term, coal-based hydrogen with carbon capture, utilization and storage will likely remain China’s lowest-cost clean hydrogen production pathway. Hence, the underlying question is whether Beijing will prioritize cost considerations or put its full industrial might behind the development and deployment of renewable hydrogen. In March 2019, the Chinese government took a significant step forward by announcing measures to promote the construction of hydrogen facilities for new energy vehicles. Wan Gang, who is known as China’s “father of the electric car,” called for China to “look into establishing a hydrogen society” and “move further toward fuel cells.”3 Given that Gang made a similar call two decades ago on vehicle electrification, which played a key role in China’s current battery electric vehicles market dominance, close attention is warranted.
Topic:
Security, Energy Policy, Environment, Natural Resources, Renewable Energy, and Hydrogen
Political Geography:
China and Asia-Pacific

11. 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