Opportunities for household energy on the Qinghai-Tibet Plateau in line with United Nations’ Sustainable Development Goals
Approximately seven million population in the Qinghai-Tibet Plateau of China, a global climate-sensitive region, still rely primarily on yak dung for household cooking and heating. The treatment and combustion of yak dung result in a variety of negative impacts in terms of local alpine grassland degradation, indoor air pollution, public health risk, as well as global climate change. The perspective is expected to shed light on the development of sustainable energy in other developing regions or countries in the world to address multiple societal goals.
Clean air actions in China, PM2.5 exposure, and household medical expenditures: A quasi-experimental study
Tao Xue, Tong Zhu, Wei Peng, Tianjia Guan, Shiqiu Zhang, Yixuan Zheng, Guannan Geng, Qiang Zhang. PLOS Medicine. 6 January 2021.
Exposure to air pollution, a leading contributor to the global burden of disease, can cause economic losses. Driven by clean air policies, the air quality in China, one of the most polluted countries, has improved rapidly since 2013. This has enabled a unique, quasi-experiment to assess the economic impact of air pollution empirically.
Trade-offs for equitable climate policy assessed
Wei Peng. Nature. 9 December 2020.
Computational models show that regionally varied prices for carbon emissions can greatly reduce the need for poor countries to receive financial assistance to tackle climate change, while still stabilizing global warming.
Energy Use for Electricity Generation Requires an Assessment More Directly Relevant to Climate Change
Bruce E. Logan, Ruggero Rossi, Gahyun Baek, Le Shi, Jacqueline O'Connor, & Wei Peng. ACS Energy Letters. 21 October 2020.
In order to communicate the effects of changing energy consumption, the discourse surrounding energy should be altered to convey energy production in units unassociated in fuel combustion, to avoid exaggeration of energy used for the production of renewables, and present only the primary energy in fossil fuels for electricity production.
The Critical Role of Policy Enforcement in Achieveinng Health, Air Quality & Climate Benefits from India's Clean Electricity Transition
Wei Peng, Hancheng Dai, Hao Guo, Pallav Purohit, Johannes Urpelainen, Fabian Wagner, Yazhen Qu, & Honglian Zhang. Environmental Science and Technology. Aug 2020.
Although the Indian government has issued a series of clean air policies and low-carbon energy targets, a key barrier remains enforcement. Here, we quantify the importance of policy implementation in India’s electricity sector. The results underscore the important role of effectively implementing existing policies to simultaneously achieve air pollution, health, and carbon mitigation goals in India.
Potential Uses of Coal Methane in China and Associated Benefits for Air Quality, Health, and Climate
Mingyang Zhang, Jordaan Sarah M., Wei Peng, Qiang Zhang & Scot M. Miller. Environmental Science and Technology. August 2020.
China recently set goals to capture and utilize methane from coal seams as a source of unconventional natural gas. We find that these goals would decrease the total carbon emissions, and that mitigated methane emissions dominate these reductions and confer a much larger climate benefit than would be expected.
Enabling a Rapid and Just Transition Away from Coal in China
Gang He, Jiang Lin, Ying Zhang, Wenhua Zhang, Guilherme Larangeira, Chao Zhang, Wei Peng, Manzi Liu & Fuqiang Yang. One Earth. August 2020.
As the world's largest coal producer and consumer, China's transition from coal to cleaner energy sources is critical for achieving global decarbonization. This paper explores China's current coal-transition policies, their barriers, and the potential for an accelerated transition, as well as the associated environmental, human health, and employment and social justice issues that may arise from the transition.
Cross-State Air Polutting Transport Calls for More Centralization in India's Environment Federalism
Xinming Dum Hao Guo, Hongliang Zhang, Wei Peng, Johannes Urpelainen Atmospheric Pollution Research. July 2020.
To understand the challenge of transboundary air pollution transfer in India, we use a detailed emissions inventory and a source-oriented chemical transport model to explore state-to-state flows of emissions within the world's largest democracy, India, where poor air quality has caused a public health crisis. To solve the air pollution crisis, India needs a more centralized form of environmental federalism.
An Ultra-Low Emission Coal Power Fleet for Cleaner but not Hotter Air
Yana Jin, Wei Peng, and Johannes Urpelainen. Environmental Research Letters. August 2020.
Air pollution has galvanized opposition to coal-fired power generation, but counting on concerns over air pollution to promote a coal-to-renewables shift for addressing the climate threrat in the long run is a risky bet. By investing in an ultra-low emission (ULE) coal fleet, emerging countries can solve the air pollution problem in an affordable manner. Recognizing this reality, we call for an updated view of the role of coal power in emerging countries and in the global effort to avoid climate disruption.
The Impact of Human Health Co-benefits on Evaluations of Global Climate Policy
Noah Scovronick, Mark Budolfson, Francis Dennig, Frank Errickson, Marc Fleurbaey, Wei Peng, Robert H. Socolow, Dean Spears & Fabian Wagner. Nature Communications. May 2019.
Reductions in air pollutants emissions resulting from CO2 mitigation provide both the health co-benefits and the climate co-harms (as air emission pollutants produce net cooling overall). By relying on the modified RICE model, we find that when both co-benefits and co-harms are taken fully into account, optimal climate policy results in immediate net benefits globally, overturning previous findings from cost-benefit models that omit these effects.
Gasification of Coal and Biomass as a Net Carbon-negative Power Source for Environment-friendly Electricity Generation in China
Xi Lu, Liang Cao, Haikun Wang, Wei Peng, Jia Xing, Shuxiao Wang, Siyi Cai, Bo Shen, Qing Yang, Chris P. Nielsen, and Michael B. McElroy. PNAS. March 2019
We focus on deploying a combination of coal and biomass energy to produce electricity in China using an integrated gasification cycle system combined with carbon capture and storage (CBECCS). We find that CBECCS systems employing a crop residue of 35% could produce electricity with net-zero life-cycle emissions of greenhouse gases. Our findings suggest that CBECCS strategy is a promising solution for China to achieve its both short-term air pollution abatement and long-term carbon mitigation goals.
Managing China's Coal Power Plants for Multiple Environmental Objectives
Wei Peng, Fabian Wagner, M.V. Ramana, Haibo Zhai, Mitchell Small, Carole Dalin, Xin Zhang, Denise L. Mauzerall. Nature Sustainability. November 2018.
We find lower CO2 emissions in 2030 than 2015 only with substantial renewable generation or low projected electricity demand. Meanwhile, we observe lower air pollution and water impacts when current regulations and prices for air pollutant emissions and water are imposed on coal power plants. Increasing the price of air emissions or water alone can lead to a tradeoff between these two objectives, mainly driven by differences between air pollution-oriented and water-oriented transmission system designs that influence where coal units will be built and retired.
Air Quality-Carbon-Water Synergies and Tradeoffs in China's Natural Gas Industry
Yue Qin, Lena Hoglund-Isaksson, Edward Byers, Kuishuang Feng, Fabian Wagner, Wei Peng, Denise L. Mauzerall. Nature Sustainability. September 2018.
We examine the air quality–carbon–water interdependencies of China’s six major natural gas sources and three end-use gas-for-coal substitution strategies in 2020. We find that replacing coal with gas sources other than coal-based synthetic natural gas
(SNG) generally offers national air quality–carbon–water co-benefits. However, SNG achieves air quality benefits while increasing carbon emissions and water demand, particularly in regions that already suffer from high per capita carbon emissions and
severe water scarcity.
Climate, Air Quality and Human Health Benefits of Various Solar Photovoltaic Deployment Scenarios in China in 2030
Junnan Yang, Xiaoyuan Li, Wei Peng, Fabian Wagner, DeniseL. Mauzerall.
Environmental Research Letters. May 2018.