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Threshold Effects of Energy Mix on Environmental Quality

Domain:

environment and energyclimate

Record type:

paper
Creator:
BasNomMig
Editor:
UniUniFac
Publisher:
CCSDSpringer-Verlag
Host:avatar
International audience This paper empirically examines the nexus between energy consumption and the environmental quality conditioned to the energy mix in sub-Saharan African countries over the period 1990–2016. Using the panel threshold regression developed by Hansen (Econometrica 68:575–603, 1999) including 22 countries, the environmental quality is measured by the CO2 emissions. Results show that there is a non-linear relationship between energy consumption and CO2 emissions, and two threshold values of energy mix were found (68.53% and 88.86%). Then, our findings argue that energy consumption increases CO2 emissions when the energy mix is below 68.53%. However, when the energy mix is above 88.86%, energy consumption leads to a significant reduction in CO2 emissions. In addition, Gross Domestic Product and trade openness increase CO2 emissions, while rural population growth has a negative effect on CO2 emissions. Therefore, to achieve their environmental quality objectives, Sub-Saharan African countries have to focus their energy policies on renewable energy sources. Cet article analyse empiriquement le rôle du mix énergétique dans la relation entre la consommation d'énergie et la qualité de l'environnement dans les pays d'Afrique Subsaharienne. A travers l'estimation d'un modèle en panel à effets de seuils à transition brute, nous montrons qu'il existe un seuil du mix énergétique à partir duquel la consommation d'énergie génère d'externalités positives sur l'environnement à travers une réduction des émissions de dioxyde de carbone. Par ailleurs, il ressort de nos résultats que le produit intérieur brut et l'ouverture commerciale contribuent à l'augmentation des émissions de dioxyde de carbone alors que la croissance de la population rurale contribue à la réduction de la pollution dans l'échantillon. Il est donc vivement suggéré une accélération de la transition énergétique afin de préserver la qualité de l'environnement.

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Tags

JEL: Q - Agricultural and Natural Resource Economics • Environmental and Ecological EconomicsJEL: Q - Agricultural and Natural Resource Economics • Environmental and Ecological Economics/Q.Q4 - EnergyJEL: Q - Agricultural and Natural Resource Economics • Environmental and Ecological Economics/Q.Q3 - Nonrenewable Resources and ConservationJEL: Q - Agricultural and Natural Resource Economics • Environmental and Ecological Economics/Q.Q5 - Environmental EconomicsJEL: C - Mathematical and Quantitative Methods/C.C3 - Multiple or Simultaneous Equation Models • Multiple Variables/C.C3.C33 - Panel Data Models • Spatio-temporal Models[QFIN]Quantitative Finance [q-fin][SDE]Environmental Sciences

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