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1. Electric Vehicle Charging in China and the United States

Author:
David Sandlow and Anders Hove
Publication Date:
02-2019
Content Type:
Working Paper
Institution:
Center on Global Energy Policy
Abstract:
At least 1.5 million electric vehicle (EV) chargers have now been installed in homes, businesses, parking garages, shopping centers and other locations around the world. The number of EV chargers is projected to grow rapidly as the electric vehicle stock grows in the years ahead. The EV charging industry is a highly dynamic sector with a wide range of approaches. The industry is emerging from infancy as electrification, mobility-as-a-service and vehicle autonomy interact to produce far-reaching changes in transportation. This report compares EV charging in the world’s two largest electric vehicle markets -- China and the United States – examining policies, technologies and business models. The report is based on more than 50 interviews with industry participants and a review of the Chinese- and English-language literature. Findings include: 1. The EV charging industries in China and the United States are developing largely independently of the other. There is little overlap among the key players in the EV charging industries in each country. 2. The policy frameworks with respect to EV charging in each country differ. The Chinese central government promotes the development of EV charging networks as a matter of national policy. It sets targets, provides funding and mandates standards. Many provincial and local governments also promote EV charging. The United States federal government plays a modest role in EV charging. Several state governments play active roles. 3. EV charging technologies in China and the US are broadly similar. In both countries, cords and plugs are the overwhelmingly dominant technology for charging electric vehicles. (Battery swapping and wireless charging have at most a minor presence.) China has one nationwide EV fast-charging standard, known as China GB/T. The US has three EV fast charging standards: CHAdeMO, SAE Combo and Tesla. 4. In both China and the United States, many types of businesses have begun to offer EV charging services, with a range of overlapping business models and approaches. A growing number of partnerships are emerging, involving independent charging companies, auto manufacturers, utilities, municipalities and others. The role of utility-owned public chargers is larger in China, especially along major long-distance driving corridors. The role of automaker EV charging networks is larger in the United States. 5. Stakeholders in each country could learn from the other. US policymakers could learn from the Chinese government’s multiyear planning with respect EV charging infrastructure, as well as China’s investment in data collection on EV charging. Chinese policymakers could learn from the United States with respect to siting of public EV chargers, as well as US demand response programs. Both countries could learn from the other with respect to EV business models. As the demand for EV charging grows in the years ahead, continued study of the similarities and differences between approaches in China and the United States can help policymakers, businesses and other stakeholders in both countries and around the world.
Topic:
Science and Technology, Infrastructure, Green Technology, and Electricity
Political Geography:
United States, China, Asia, and North America

2. Decarbonizing Space Heating with Air Source Heat Pumps

Author:
Noah Kaufman, David Sandlow, and Clotilde Rossi de Schino
Publication Date:
12-2019
Content Type:
Working Paper
Institution:
Center on Global Energy Policy
Abstract:
In the United States, commercial and residential buildings produce roughly 12 percent of greenhouse gas emissions. Most of these emissions come from burning fossil fuels for space heating. These emissions must be significantly reduced or eliminated for the US to achieve deep decarbonization goals, including net zero emissions by midcentury. Air source heat pumps (ASHPs) are powered by electricity, using well-established technology to move heat from outdoor air to indoor air. When powered by zero-carbon electricity, ASHPs provide space heating with almost no greenhouse gas emissions. ASHPs are especially effective for space heating in mild climates. In 2015, roughly 10 percent of US households (mostly in the Southeast) used air source heat pumps as their primary heating source.[1] ASHPs account for roughly one-third of residential space heating in Japan. The world’s largest ASHP market is in China, where sales are growing rapidly. Prominent studies on decarbonization of the US energy system focus on deployment of air source heat pumps as the primary strategy for reducing emissions from space heating. Some studies show near-universal electrification of space heating, suggesting that ASHPs (with some backup from electric resistance heaters) can be almost a silver bullet solution for decarbonizing space heating. These studies start with the assumption that fossil fuel furnaces and boilers will be gradually phased out. Other studies assume that electric heating technologies such as ASHPs will continue to compete against fossil fuel burning furnaces and boilers in the decades ahead. These studies conclude that furnaces and boilers will retain a significant share in space heating markets, even with technological progress and strong policy support for ASHPs, but often fail to explain why. Do high costs or inferior performance limit market penetration in these studies? Or do other barriers limit ASHP deployment? The answer has important implications for policy makers shaping decarbonization strategies. To help answer these questions, we built a simple model of ASHP adoption that estimates the lifetime costs of space heating and cooling configurations in three US cities with markedly different climates and energy costs: Atlanta, Georgia; San Diego, California; and Fargo, North Dakota. The model analyzes the choices facing hypothetical consumers installing new heating and cooling equipment in residential buildings. The consumers have the option to purchase an ASHP for heating and cooling (with backup if needed) or a natural gas furnace and air conditioner. Based on the model results and related research, we conclude: Air source heat pumps are cost competitive today in places where electricity is cheap and the climate is mild. With climate policies consistent with rapid decarbonization and reasonably foreseeable technological progress, air source heat pumps are the low-cost option for typical residential buildings across much of the US by the mid-2030s. Even in the very cold climate of Fargo, North Dakota, the combination of a price on carbon emissions and steady innovation in ASHPs causes ASHPs (with an electric resistance heater as a backup) to be cost competitive with new natural gas furnaces and air conditioners by the 2030s. If the United States commits to the rapid decarbonization of space heating by midcentury, the costs and performance of ASHPs are unlikely to be major barriers to deployment. However, other important barriers may persist, including contractors’ and homeowners’ greater familiarity with incumbent fossil fuel technologies and the slow turnover of the building stock. As a result of these additional barriers, emissions pricing and technological progress alone may not lead to deployment of air source heat pumps in the United States sufficient to achieve deep decarbonization by midcentury. That would likely require additional policy instruments such as technology standards, emissions caps, or mandates. Other technologies can also contribute to decarbonizing space heating, including renewable natural gas, hydrogen produced with carbon capture and storage (CCS) or electrolysis, and centralized or district heating. Each of these options comes with challenges that will require policy support to overcome. This study does not point to a proper balance between ASHPs and other space heating decarbonization technologies. More research is needed to compare different approaches and strategies. In the meantime, our analysis suggests little if any downside to pursuing ambitious policies to promote deployment of ASHPs, prioritizing regions where heat pumps are currently most cost effective. A large-scale increase in ASHP deployments is likely to be an important part of any space heating decarbonization scenario.
Topic:
Climate Change, Energy Policy, Green Technology, Renewable Energy, and Fossil Fuels
Political Geography:
United States