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Assessing factors influencing green hydrogen conversion at Vietnam's gas turbine power plants using combined SWOT-AHP analysis method

  • At COP26, Vietnam committed to achieve net zero emissions by 2050. Up to now, several strategic policies and master plans concerning energy and power development along with emission reduction have been introduced. The national power development plan for the 2021–2030 vision to 2050 (PDP8) has directed for gas-to-hydrogen fuel conversion at gas turbine power sources in the national power system when the technology is commercialized and the cost is appropriate. Therefore, gas turbine power plants (GTPPs) with a total capacity of approximately 32.4 GW by 2050, using domestic natural gas and imported liquefied natural gas (LNG), will be expected to switch to using green hydrogen (GH2) to cut greenhouse gas (GHGs) emissions. This study uses the SWOT analysis and analytic hierarchy process (AHP) method to quantitatively analyze and examine the factors influencing the perspective of GH2 conversion at CTPPs in Vietnam. Research results show that among the four groups of Strengths, Weaknesses, Opportunities, and Threats being examined, the most influencing one is Weaknesses with the highest weight of 0.381, followed by Threats (0.343), suggesting that the GH2 conversion ambition will be facing significant challenges and difficulties. At the level of element factors in the groups, the lack of infrastructure and insufficient legal framework/specific incentive mechanisms are the biggest weaknesses, with weights of 0.362 and 0.326, respectively, while the consistent policies of the state and abundant potential of renewable energy resources, weighing 0.446 and 0.235, respectively, are Vietnam's prominent strengths. Additionally, remarkable opportunities include the effective exploitation of available renewable energy resources (0.338) and great contribution to reducing emissions (0.288), while the main challenges remain the lack of capital (0.471) and high GH2 cost (0.284). The research results clarify the typical problems of a developing country like Vietnam in the global energy transition trend toward carbon neutrality: high potential of renewable energy sources, great political determination, and ambitious goals for green growth, but significant difficulties and challenges due to the low starting point and limited technological and financial resources while energy demand is constantly increasing. Thus, some strategic solutions are proposed, including taking advantage of internal strengths to avoid/limit external threats, making the most of strengths to exploit opportunities, and minimizing weaknesses to take advantage of opportunities and to limit the threats.

    Citation: Duong Doan Ngoc, Kien Duong Trung, Phap Vu Minh, Thao Nguyen Van. Assessing factors influencing green hydrogen conversion at Vietnam's gas turbine power plants using combined SWOT-AHP analysis method[J]. AIMS Energy, 2024, 12(5): 1054-1074. doi: 10.3934/energy.2024050

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  • At COP26, Vietnam committed to achieve net zero emissions by 2050. Up to now, several strategic policies and master plans concerning energy and power development along with emission reduction have been introduced. The national power development plan for the 2021–2030 vision to 2050 (PDP8) has directed for gas-to-hydrogen fuel conversion at gas turbine power sources in the national power system when the technology is commercialized and the cost is appropriate. Therefore, gas turbine power plants (GTPPs) with a total capacity of approximately 32.4 GW by 2050, using domestic natural gas and imported liquefied natural gas (LNG), will be expected to switch to using green hydrogen (GH2) to cut greenhouse gas (GHGs) emissions. This study uses the SWOT analysis and analytic hierarchy process (AHP) method to quantitatively analyze and examine the factors influencing the perspective of GH2 conversion at CTPPs in Vietnam. Research results show that among the four groups of Strengths, Weaknesses, Opportunities, and Threats being examined, the most influencing one is Weaknesses with the highest weight of 0.381, followed by Threats (0.343), suggesting that the GH2 conversion ambition will be facing significant challenges and difficulties. At the level of element factors in the groups, the lack of infrastructure and insufficient legal framework/specific incentive mechanisms are the biggest weaknesses, with weights of 0.362 and 0.326, respectively, while the consistent policies of the state and abundant potential of renewable energy resources, weighing 0.446 and 0.235, respectively, are Vietnam's prominent strengths. Additionally, remarkable opportunities include the effective exploitation of available renewable energy resources (0.338) and great contribution to reducing emissions (0.288), while the main challenges remain the lack of capital (0.471) and high GH2 cost (0.284). The research results clarify the typical problems of a developing country like Vietnam in the global energy transition trend toward carbon neutrality: high potential of renewable energy sources, great political determination, and ambitious goals for green growth, but significant difficulties and challenges due to the low starting point and limited technological and financial resources while energy demand is constantly increasing. Thus, some strategic solutions are proposed, including taking advantage of internal strengths to avoid/limit external threats, making the most of strengths to exploit opportunities, and minimizing weaknesses to take advantage of opportunities and to limit the threats.



    1. Introduction

    The involvement of the cerebellum in affective brain activity has been demonstrated by various approaches including clinical and behavioral studies and brain imaging, but it is still difficult to identify precisely the role that the cerebellum plays in emotional processing and behavior. In two papers [1,2] in this special issue, many examples showing the likely involvement of the cerebellum in emotion regulation are reviewed, but in most cases, the exact role of the cerebellum is difficult to explain. To proceed further toward answering the question posed in the title, I suggest the following two directions that should be explored.

    2. Two directions toward answering the question

    2.1. To clarify which area of the cerebellum specifically represents emotion

    The functional structure of the cerebellum devoted to motor function is hierarchically organized according to longitudinal zonal structures of the cerebellum [3]. Zones A (vermis) and B (paravermis) are devoted to the adaptive control of somatic reflexes, and zones C1-C3 (the intermediate parts of the cerebellar hemisphere) to the internal-model-assisted control of voluntary movements. Between zones D1 and D2 (the lateral parts of the cerebellar hemisphere), D1 is considered to be devoted to the control of motor actions (e.g., dancing, tool uses), whereas zone D2 (the most lateral part of the cerebellar hemisphere) is allocated to cognitive functions [4]. The thought process is a typical cognitive function, in which the prefrontal cortex manipulates ideas expressed in the cerebral parietal cortex. Zone D2 may support the thought process by providing an internal model of ideas, but how ideas are represented in the neural circuit is still unknown. With this longitudinal zonal organization map, one can comprehend that cerebellar lesions lead to not only motor control dysfunction but also cognitive syndromes; however, where is emotion represented likewise?

    Functional localization related to emotion has been shown for autonomic reflexes. In the vermis and flocculonodular lobe (parts of zones C1-C3), there are areas controlling cardiovascular homeostasis via the sympathetic nervous system [5]. In the first paper of this special issue [6], it is described that a discrete area of the cerebellar flocculus controls arterial blood flow associated with defense reactions. Lesions of the cerebellum at the flocculus, nodulus, and uvula impair these autonomic reflexes and their integrated functions, which will lead to impairment of physiological expressions of affective processes. The role of the cerebellum can be defined as the adaptive control of autonomic functions that support emotion regulation by a mechanism common to the adaptive control of motor functions.

    2.2. Neuropeptide-containing cerebellar afferents mediate mood control

    Mood impairment is a major clinical symptom associated with cerebellar diseases [7]. One may recall that some neuropeptides play a modulatory role in mood. For example, neuropeptide Y is involved in mood and anxiety disorders [8] and a decrease in its level is associated with an increased risk of suicide [9]. Corticotropin-releasing factor and galanin may also be involved in mood control as their antagonists exert antidepressant-like effects [10]. Recently, a number of neuropeptides have been shown to be substantially expressed in the cerebellum [11]. These neuropeptides are contained in beaded fibers, which project to the cerebellum diffusely and dispersedly [12]. This form of innervation is typical in neuromodulation [13], in which dispersed fibers do not convey information specific to individual fibers, but they govern the general activity of their target neurons as a whole. Thus, beaded fibers would switch the operational mode of their target neuronal circuit as a whole by neuromodulation.

    As explained in the first paper of this special issue [6], the orexinergic system functions in the organization of neural circuits for anger and defense behavior; this case may provide a prototype mechanism for selecting an emotional behavioral repertoire via neuromodulation. Each neuropeptide may activate a certain unique set of neuronal circuits selected through the spinal cord, brainstem, and cerebellum, which jointly represent a specific emotion and behavior. The selected cerebellar portion is expected to control selected autonomic reflexes and their integrated functions in the spinal cord and brainstem. This mechanism could be an answer to the question posed in the title of this special issue.

    Conflict of Interest

    The author declares to have no conflict of interest.



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