Towards Urban Energy Management: A Brief Review of China’s Recent Transition in Urban Energy Demand

It is widely accepted the lifeblood of urban economy and growth is energy. Urban transport, infrastructure, industry, and dwellings dominate energy consumption in the built environment. Nevertheless, energy efficiency in urban growth is a key factor that is widely questioned and little understood. As a result, this paper aims to question challenging matters of urban growth and energy by reviewing China’s recent transition in urban energy demand. This study offers a better understanding of urban energy management and energy demands of rapidly urbanizing countries, by using China as a leading example. Since the 1980s, after the unprecedented rapid urbanization and growth in China, there are major goals to tackle the emerging matters of urban energy management and growing energy demands. These national-level challenges are imposing serious threats to how cities grow and are managed in the coming decade or so. In light of this, and the face of rapid urbanization and urban growth, this paper investigates China’s current trends of urban energy management and energy demands. Finally, this paper explores current approaches to urban development in China and will offer an overview of China’s requirement to tackle its current energy challenges. The findings of this study are highlighted as part of a brief review of China’s recent five-year-plans and are then developed further in the light of what energy targets mean for cities and urban management.


Introduction
In the developing world, and particularly in rapidly developing countries, urban growth is not merely considered the rate of growth of the urban population but embraces economic growth involving both consumption and production (Yusuf & Saich, 2008;NDRC, 2016). Over the last two decades, the energy consumption and production rates are increasing in China and have been increasing even more during the recent urbanization phase of the new-type urbanization plan (NUP) (Cheshmehzangi, 2016). This transitional phase has made China become the number one crude oil importer in 2017 (S&P Global Platts, 2017). The energy growth in the household and industrial sector is also seen to be increasing rapidly, which is already evidenced in existing scholarly research. Hence, as the recent projections indicate (Chen et al., 2020;Li et al., 2020;Ma et al., 2020;Su & Lee, 2020), the process of urban growth is expected to and is likely to continue at a faster pace in the coming one or two decades. For instance, China's carbon emission peak is expected to be around 2030 (Cheshmehzangi, 2016;Elzen et al., 2016;Liu et al., 2017) and this means we are expected to have a continuing intensified urban development and urbanization for at least the next 10 years. This is also identified as a potential perspective for energy-related carbon emissions (Fang et al., 2019) and associated with the 2030 national energy policy targets . For the latter, the predictions are for China to enter the phase of a steady decline from 2025 onwards while complying with energy efficiency requirements and energy policy targets (Qi et al., 2013). In fact, as discussed by  "China has pledged to peak its carbon dioxide (CO 2 ) emissions and lower its CO 2 intensity by 60% -65% from the 2005 level by 2030". This is also believed to put significant pressure on energy structural adjustments to ensure meeting the national target plans by 2030. Yet, in this process, there are major challenges that need to be addressed to achieve sustainable urban growth and better management of urban development and urban areas. In consideration of combined effects from urban growth and energy demands, the dynamics of urban management are either neglected or little-understood in how these impact sustainable urban growth and development. Hence, this study aims to highlight these complexities by providing an overview of what may be a difficult transitional phase from 2020 to 2030.
It is widely recognized that as part of the development process, cities are key players in developing market economies and making economies more viable (Adams, 1994). As cities are identified as the font of innovation (Shearmur, 2012), they also play a major part in decarbonization processes (Cheshmehzangi, 2016) and towards green development. The relationship between innovation and growth is seen in existing scholarly research (Hall 1999;Simmie, 2001;Acs, 2002;van Oort, 2004;Wolfe & Bramwell, 2008;Duranton, 2011;Komninos, 2011;Krätke, 2011;Devins et al., 2016;Florida et al., 2016). Much of it, however, depends on the organizing capacity , entrepreneurship in development mode (Xie et al., 2020), and regional creative capacity (Gülümser et al., 2010). Therefore, we can argue that achieving sustainable urban growth de-A. Cheshmehzangi DOI: 10.4236/lce.2020.111001 3 Low Carbon Economy pends on how market economies are related to both consumption and production of the urban population as well as of the built environments. The imbalance that may exist may turn into patterns of excessive consumption or higher production in specific sectors. For instance, this is already visible in growing energy demand in the residential sector. In this respect, we can argue that the energy management of the urban population will remain a major challenge for rapidly urbanizing developing countries like China. The nexus between urbanization and increasing energy demand would mean opportunities for investing in alternative energy use and enhancement of the existing structural systems. To rethink these, we may need to look into the bigger picture of urbanization and its impact on the growing demand for cities and communities, those that undoubtedly put more pressure on urban management issues. Therefore, this requires new methods and systems to overcome any possible growth or development failures that involve issues of energy and energy management. As a result, this explanatory paper discusses urban growth and its implication as part of the process of development. This paper looks into the case of China's urbanization and urban growth and will identify urban energy challenges that require better management and development strategies in the next decade or so. The aim of this study is to provide an overview of this transitional phase that is to shift towards sustainable urban energy management.

Urban Growth: Development and Production
Currently, more than 80% of the world's population live in less developed regions. Asia and Africa account for 60% and 14% of the world population respectively, which are the two highest at a global scale (United Nations, 2009). In the last decade, we have seen increases at the global level, with the highest impact in the context of Asia, such as in countries like China. By 2025, these figures will dramatically change as significant increments in urban growth and urbanization rates are expected to occur in both continents of Asia and Africa ( Figure 1).
Urbanized areas in both continents are forecast to grow most rapidly, doubling in (urban) population between and 2030(UN Population Fund, 2007. This significant demographic change indicates a major shift in the rate of development and production in the coming decades. As part of the process of urbanization, such a major change will ultimately increase the spread of energy demand.
It is already evident that many major cities in the developing world are the main economic hubs and developing at a rapid pace. Management of the growing urban population in this context will require considerable and unique approaches to development.
In addition, despite occupying only 3% of the land surface, cities use more than 75% of the overall energy consumption of the world and produce 50% of the  to address major urban challenges; one of which is to fulfill social and economic demands, and particularly the energy demand, of the growing urban population.
Thus, despite being the great economy generators, cities are mainly considered the main energy consumers. We can then argue that the growing demand and consumption will increase the pressure on how cities may develop and how they can meet the needs of their growing population.

Urban Growth: Issues of Demand and Consumption
In many urban management studies, the crucial impact of energy demand and growth is consumption in the built environment (Keong, 2005;Wolde-Rufael, 2005;Huzayyin & Salem, 2013;You, 2013;Sheng et al., 2014;Esmaeeli et al., 2015;Akalpler & Shingil, 2017;Peng et al., 2018;Xu & Wang, 2020). This is substantially reflected through dynamic growth and it often neglects the overall urban economies. In the process of urbanisation and growth, expansion of urban development tends to result in demographic changes resulting in significant impacts to the overall urban management and energy consumption (Table 1). Also, it means the way cities are designed and operate can lead to possible reductions in greenhouse gas emissions and enhancement to energy efficiency; lessening major urban pressures such as poverty and energy demand. Although neglected in current urban studies and debate, there is a great deal of international research into how integrated approaches are developed, implemented and managed for improved energy system performance, legislation and energy efficiency initiatives.
In addition, increased patterns of energy demand and consumption will have further impact on equity and efficiency of urban growth. This can have direct or/and indirect impact on pace and quality of development. In his comparison study of two major American cities, discussing energy and urban growth, Platt (1987) referred to the study of energy as a "separate source of growth distinct from other economic factors", meaning that energy plays a major role in improving our knowledge of the process of urbanisation and its implications. This has become more apparent in the context of developing countries as prices of oil and other energy sources rise faster than before. This is alarming for emerging economies as urbanisation and urban growth are both of considerable importance as part of overall development. The major transition of energy consumption and increase in demand will require top-down scale management. We can, therefore, argue that measurement, analysis and modelling of urban growth are required to better forecast, and ultimately manage, current and future urban development (Herold et al., 2003). In this respect, improvements in understanding the sources, timeline and impacts of the process of urbanisation are essential to introducing approaches to better management and planning of urban development (Klostermann, 1999;Longley & Mesev, 2000;Herold et al., 2003). In this study, we explore the case of China's urbanisation and urban growth as a leading example in the developing world. The case of China demonstrates current challenges and approaches to urban-scale energy management scenarios. In their concluding remarks, Peng et al. (2018) highlight the changes in economic growth patterns in China and argue about the effects on China's energy demand from the presentation of five potential scenarios: 1) the business-as-usual (BAU) scenario that suggests the baseline of growing energy demand and economic growth, 2) a more economic-oriented approach that suggests acceleration of the economic transition, 3) A unrealistic scenario of capping coal consumption before the start of the 14 th FYP (i.e. 2020), 4) a scenarios which is based on unconventional gas production, and 5) a combination of scenarios apart from the BAU. The implications from these scenarios are on goals of peaking carbon emissions which is also closely correlated with energy use policy and energy targets by 2030. While we believe capping the coal consumption at an earlier phase may not be so realistic, it is anticipated that economic growth could alter structurally through a greener transition. As it already happens through green economy transition, we anticipate to see a progress on balancing energy and economic growth, through which energy demand has to be monitored cautiously and alternative modes of energy production and consumption have to take a stronger position.
Issues of demand and consumption continue to be major challenges in transitional phases that China is experiencing now. The said demographic changes, from the perspective of energy demand increase, put a major pressure on medium to larger cities as the urban energy demand are expected to be much higher than the other cities or communities. The balance to gradually reduce the BAUs would take a longer time that may see structural changes or institutional rearrangements that could help to develop new strategies for energy demand reduction or alternative energy use. The combination effect of improving the energy consumption structure (Kuznets, 1965;You, 2013) and reduction of GHG emissions (Peng et al., 2018) would set changes to different energy use, even though the demand may continue to grow. The emphasis, as highlighted by Golley et al. (2013) is then likely to be at the regional level, which could reflect on the demand-side perspective (Sheng et al., 2014) and create an ecosystem between urban and rural areas (Cheshmehzangi, 2016). In this regard, we can foresee no reduction in demand and consumption, but only potential changes in energy management at the regional and city levels, as well as changes in energy structure and economic growth patterns. These come at the time when China is at the crossroads, being main fossil fuel based for energy consumption and in a transformative stage of energy restructuring towards non-fossil energy . This is also similar to global energy consumption patterns that are much higher for energy use from three main resources of crude oil, coal, and gas (i.e. three highest resources respectively) (Markandya & Wilkinson, 2007;Ritchie & Roser, 2015; BP Statistical Review of World Energy, 2019). Hence, we anticipate the timeline of the next 10 years to be very effective in making substantial changes to key aspects of energy use and demand, some of which would lead to significant changes on urban energy management. If to be considered as a prolonged transition period, then a low carbon transition is just feasible through structural adjustments for energy demand (ibid) with potential reduction in carbon intensity (He, 2014), development of new benchmarks (Ma et al., 2020), and a chance to boost the national strategy on energy production and consumption revolution (NDRC, 2016). In doing so, the transition will oppose the current trends of BAUs and lead towards a green economy direction.
The following section focuses on the case of China more precisely by first explaining more about China's urbanization and then delving into China's energy

China's Urbanisation and Urban Growth
Urbanization in the global context has already passed 50% of the total global population and is expected to reach 60% by 2030. The highest growth rate is currently in medium-sized cities where there is significant rural-to-urban migration taking place. As driving forces in economic growth, cities are growing into major economic hubs and are forecast to grow in number in developing countries, especially those that are now experiencing rapid growth specifically associated

Case Study: Urban Energy Demands in China
At first, we look at China's urban demands on energy, in particular, to elaborate more on the recent and current situation before we could suggest for urban energy management directions. This study aims to provide an overview of what is on the ground now and reflect on the realities of urbanization challenges faced in countries like China. As mentioned earlier, China is the main example due to its important position in the developing world, and hence by studying its recent transitions and current pathways, we could shed light on some of the generalities that could help to better decide on the next steps of urban energy management.
As Nobuo Tanaka, Executive Director of the International Energy Agency (IEA) (n.d.) puts it well: "One point is certain. The centre of gravity of global energy demand growth now lies in the developing world, especially in China and India. But uncertainties abound". Hence, it is important to evaluate and foresee the main issues of energy demand growth that may need to be considered more cautiously as part of the urban management planning in the next decade or so.
As the structure of China's economy indicates, the growth rate is greater in the areas of industry and services (Figure 3), meaning that urbanization remains as a major mechanism for China's development and growth. Consequently, this indicates there will be an upsurge in urban demand and energy consumption as part of the process of urbanization and growth. Moreover, the overall composition of energy demand remains one of the major urbanization challenges for China. Changes in lifestyle and developing technologies have already become a major means of optimizing energy efficiency in urban regions. Yet, these approaches are either happening at a rapid pace or are not taking place according to overall population needs; hence, there are still major concerns about the implications of urbanization and how these may be tackled.
For China, the growing demand for energy is largely due to the rise in income, overall national growth, and constant migration of rural population to urban regions. As discussed by Overman & Venables (2005), urbanization and income rates are strongly interrelated, and urban opportunities are considered essential drivers of economic growth. As a result, China's urban structure is developing Low Carbon Economy

An Overview of the Last Two Five-Year Plans (12 th and 13 th FYPs)
The reason to select the recent two five-year plans (FYPs), i.e. 12th and 13th FYPs, is that we see a tangible development on the energy and environment fac- Low Carbon Economy that achieving the targets was not possible due to high energy density and pollution targets, which were mainly caused by a "continuing stress on growth and a lack of effective enforcement". This has then been developed into the next phase of rebalancing the national economy, which brought in the two main pillars of energy and environment. The needs to do so are actually highlighted in the 10th FYP, but with the growing difficulties of the 10th and 11th FYPs, the achievements were not significant.
We can argue that the release of the plan for energy development as part of the 12th FYP was a major move that signified the starting point of further energy planning and management pathways. The move was developed based on four key achievements of the 11th FYP, which provided a solid foundation to promote the energy development plans of the following FYPs. As highlighted by Merged with the "environment" pillar, and as previously expected from the progress of the 12th FYP, the energy aspect took a main position in the 13th FYP. This meant a plan to emphasize further on cleaner and greener economy, which was aimed to develop a stronger commitment to environmental management and protection. These then led to the development of the 2020 targets, which included both national and energy plans (Ma, 2016   higher aims were put in place for the renewable energy sector. These include a further emphasis on standards (Fan et al., 2019), benefits and costs (Li & Patiño-Echeverri, 2017), policy impacts , adjusting energy consumption structure , the roles of economic factors (Wang & Feng, 2018), etc. The push on this sector was to increase the initial capacity that was proposed in 2014 as the energy demand has been continuously increasing.
The gradual decrease in primary coal consumption also does not match the growing capacity of the renewable energy sector, meaning that the overall energy demand especially for the urbanizing areas is still increasing. The continuous build-up of coal-fired power capabilities also indicates the challenges of reaching a low carbon economy in the short term.
In summary, we can see less emphasis on cities and urban management issues during the 12th FYP, while the role of cities become more visible in the 13th FYP. This is partly due to four primary facts including continuing urbanization (and associated with the NUP), highly ambitious 2020 target plans, climate agreements from Paris talks in 2015, and initiatives to achieve the SDGs. The so-called green revolution is, therefore, not simply limited to energy structuring and increasing the renewable energy sector capacity, but is also tangled with how urbanization plans will evolve in this transitional phase. The impacts on urban development modes and how cities will turn out to be key drivers and challenges of the energy sector are the main focus of the 2020-2030 era. In the lifespan of 14th and 15th FYPs, we see the importance of urban management even more than the previous decade. In the following sub-section, we ask the main question of what do energy targets mean for cities and urban management. By responding to this crucial question, we delve into further discussions that suggest pathways towards urban energy management, and specifically from the dimension of urban energy demand.

Main Considerations for the Next Two Five-Year-Plans by 2030: What Do "Energy Targets" Mean for Cities and Urban Management?
Economic development, energy demand, and carbon emission remain the three main challenges of 2020-30 . The growing urbanization to the +70% rate by 2030 will pose a major challenge to respond to the energy demands of the country. The increasing energy demands already put pressure on the set 2020 targets, and for cities, these will mean different approaches towards more investment in the renewable energy sector, development of regional-level initiatives, and strengthening the urban-rural relations in a holistic network of energy production and consumption. Some of these pathways could lead to multi-scalar initiatives, such as enhancement of renewable portfolio standards (Fan et al., 2019), improvement of energy efficiency and peak carbon emissions Li et al., 2019), local decomposition of carbon intensity targets (Zhou et Chai et al., 2015;, etc. But there are also regional differences (Li et al., 2009;Ying et al., 2016;Sheng et al., 2018) that are continuously making a major gap between different parts of the country, creating an imbalance in energy intensity and use. Some of these will need to addressed through CO 2 control policies (Pu & Hayashiama, 2012), more efficient utilization of energy resources, such as renewable energies (Fan et al., 2019), and a better understanding of the energy structure effect (Wang & Feng, 2018) in a longer-term.
For cites, these are likely to be even more challenging as the recent convergence analysis of city-level energy intensity indicates more policy support (Zhu & Lin, 2020).
By responding to the issues associated with the city-level energy management issues, the more recent debates argue about inequalities of city-level energy efficiency (Zhang & Zhou, 2020), which are affected by technological innovation . There are also essential needs for city-level transition strategies, through which development modes could be discussed more holistically (Xie et al., 2020), the role of renewable energy could be better defined , dynamics of energy intensity could be distributed more strategically , and green development could then be promoted in various ways (Deng et al., 2020b). At the city level, these could be seen from the spatial characteristics, similar to the study of Chen et al. (2018) that analyses China's energy productivity (EP) change determinants and from the evaluation of spatial character and distributional evolution in Chinese cities. In their concluding remarks, Chen et al. (2018) refer to the important role of technological and technical efficiency that is also crucial to urban management scenarios when meeting the forthcoming energy targets and carbon emission peak of 2030 or earlier (Su & Lee, 2020). To achieve this, 2020-30 is likely to be the most crucial time for urban energy management in China.

Discussions: Towards Urban Energy Management
As argued by the UN Habitat (2006) "Urbanization and economic growth typically happen in tandem; however, equitable distribution of benefits and opportunities remains a challenge". The main challenge in rapidly developing countries (like China) is not just energy or development but the management of both through optimization, design, and delivery (Hall & Pfeiffer, 2000). The same that we see that happened in the last two decades and we expect to see happening in this decade, too. Hence, we argue the focus needs to be towards achieving energy efficiency for the energy consumers of the built environment. This will require introducing and implementing efficient and effective solutions. This will ultimately ensure a reduction in the level of energy use in the built environment and will help to enhance fundamental urban programs focusing on delivering effective interventions towards urban growth.
To face these energy challenges, there is a requirement to predict and model urban growth. In the long term, this will then help to optimize urban manage- The current two challenges of environmental degradation and energy scarcity (Jiang et al., 2018;Lin & Zhou, 2019;Shao et al., 2019;Zhu & Lin, 2020) are likely to continue as bottlenecks of sustainable development in China. Nevertheless, the move towards energy structure changes (Wang et al., 2016;Yang et al., 2018;, new policy formation for cities of different sizes (Deng et al., 2020c), progress in green economy improvement (Li & Lin, 2016;Pan et al., 2019), efficiency change in technological progress (Pan et al., 2019;Zhu et al., 2019;Zhou et al., 2020), and clean energy to gradually enter the social market (Deng et al., 2020a), are just inevitable. Under the overarching area of urban management, we see urban energy management would become every important in facing the forthcoming challenges and developing new initiatives towards sustainable growth.

Limitations, Contributions, and Future Research
This study's main limitation is the availability of data that are mostly associated with recent transitions and the development of the forthcoming FYPs, which are likely to be covered in future research in the field or associated with areas of urban sustainability, urban management, and sustainable development. The correlation between the urban economy and the increase of energy demand is already studied, which demonstrates a major challenge in the coming years particularly for developing countries like China. The rapid growth and urban development, as studied in this research paper, could provide a better understanding of why urban energy management is essential. This study also offers a better overview of recent transitions for urban energy demand, and the importance of managing this transition towards a sustainable pathway or multiple pathways that could achieve sustainable development down the line, but not too far ahead. This study also highlights some of the key national-level challenges by exploring the recent FYPs, and suggests there are serious threats in achieving sustainability and managing the growth of cities in the coming decade or so. performances on urban energy management and environmental aspects. As a result, future studies in the field are likely to be associated with longer-term transition studies. These should include a larger network of energy parameters and provide more comprehensive energy management solutions. While this study focuses on the recent two FYPs, the longer-term transitions could be looked at from the earlier dates and to include a larger set of data on urban energy data and details of the FYPs from at least the 1970s onwards. These data could be looked at comparatively with other locales to better evaluate the institutional frameworks and provide action plans and policy development that is in line with not only the SDGs but the longer-term sustainable development for the energy sector, specifically for the urban energy sector. The following section concludes this study and highlights the main findings offered in this paper.

Conclusion
One of the main challenges of urban growth in the context of developing countries is the vital requirement for emerging a unique model specifically befitting developing countries that are either in the process of industrialization or having a rapid urbanization rate. Although China is portraying itself as a model for urban growth and urbanization, it is still progressing towards better management of its energy demands and consumption. Despite the challenges, China is seeking alternative methods and potential solutions to reduce the energy demands of its rapidly growing urban population. Developing countries are looking to replicate China's successes in boosting urbanization and economic growth, which has made China a key economic player in the international arena. Both scientifically and technologically, systematic approaches to modeling, measuring, and managing the energy demands and consumption are developing rapidly. At the city level, these should be dealt with through holistic urban management.
In this study, we have briefly reviewed China's recent energy transitions of the last two decades in order to better portray the existing challenges that are yet to be faced before the 2030 targets. By assessing the progress of China's recent three five year plans, we have highlighted the continuing challenges that are tangled with urbanization and economic growth. The two cannot be neglected in the field of energy management, particularly that we are dealing with continuously increasing energy demand and consumption. The role of cities and urban management, as highlighted in this study, is evident in how China should manage its next phase of development. The emphasis on urban management, specifically from the urban energy management perspective, is regarded as a prolonged challenge that requires immediate attention. Suggestions that are already discussed in the previous section provide pathways towards sustainable urban energy management that could lead to better control of carbon emissions, too.
Finally, it can be argued that beyond demographic and land-use changes, urbanization remains key for sustainable development and can promote economic reforms that can significantly reduce poverty in the longer-term. However, the surge of rural to urban migration has led to calls for huge investment in construction, transportation, and infrastructure planning, which are identified as major energy consumers of the built environment. The unsustainable patterns of production and energy consumption require further optimization and assimilation to comprehend the significance of energy-efficient urban growth that has not yet been established. These matters are certainly very important for policy and decision making that require reductions for energy consumption and de- mand. Yet, policy-makers have been overly concerned with policy strengths but achieved too little in shaping manageable urban growth. Finally, it is important to note that improvements in design information and decision making require more than a predictive model but rather a prescriptive approach.