Health and economic benefits of air quality improvements in France through diverse net-zero transition scenarios by 2050
Abstract
Background: Climate mitigation can deliver substantial air quality co-benefits, yet these remain poorly quantified across pathways ranging from sufficiency-to technology-driven transitions. This study compares four French energy-transition scenarios for 2030 and 2050 against a 2019 baseline under fixed meteorology, evaluating annual PM 2.5 and NO 2 concentration changes and health and economic co-benefits. Methods: PM 2.5 and NO 2 concentrations for 2030 and 2050 were estimated with the CHIMERE chemistrytransport model using scenario-specific emission projections. Health impacts relative to 2019 were assessed via disease-specific lag assumptions, covering yearly premature mortality, morbidity, DALYs, and economic benefits across nine cardiometabolic and respiratory outcomes (hypertension, lung cancer, acute myocardial infarction, stroke, COPD, type-2 diabetes, respiratory infections, asthma in children and adults). Findings : Annual population-weighted exposure in continental France is projected to fall by 24% (PM 2.5 ) and 45% (NO 2 ) by 2030, and by 40% (PM 2.5 ) and 75% (NO 2 ) by 2050, relative to 2019 consistently under all four 2050 transition scenarios. Health gains, assessed over each period under delayed-impact assumptions, were substantial and broadly consistent across the four scenarios. Annual avoided premature deaths are projected to reach 8,800-9,300 (PM 2.5 ) and 11,000-12,800 (NO 2 ) by 2030, rising to 21,300-22,100 (PM 2.5 ) and 24,500-26,200 (NO 2 ) by 2050. Avoided morbidity cases reached nearly 40,000 (PM 2.5 ) and 15,000 (NO 2 ) by 2030 to 68,000 (PM 2.5 ) and 20,300 (NO 2 ) by 2050, with DALYs averted increasing from nearly 150,000 in 2030 to 230,000 by 2050 across the pollutants. By 2050, direct lifetime medical cost savings reached approximately e780-810 (S4-S1) million/year for PM 2.5 and were markedly smaller for NO 2 , at approximately e60-64 million/year (S4-S1). Annual intangible cost savings (discounted to present value) totalled approximately e19-20 billion for PM 2.5 and e17-18 billion for NO 2 across S1-S4. Conclusion: Net-Zero transition can deliver substantial health and economic co-benefits across diverse policy pathways. These findings support integrating co-benefits into climate policy frameworks to strengthen the evidence base for ambitious mitigation action.
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BibTeX
@article{sharma2026health,
title = {{Health and economic benefits of air quality improvements in France through diverse net-zero transition scenarios by 2050}},
author = {Ayushi Sharma and Alicia Gressent and Elsa Real and Khanh Ninh Nguyen and Magali Corso and Mathilde Pascal and Sylvia Medina and Vérène Wagner and Rémy Slama and Augustin Colette and Kévin Jean},
journal = {Environment International},
year = {2026},
month = oct,
doi = {10.1016/j.envint.2026.110555},
url = {https://hal.science/hal-05842489v1},
note = {CC BY-NC 4.0},
}
RIS
TY - JOUR
TI - Health and economic benefits of air quality improvements in France through diverse net-zero transition scenarios by 2050
AU - Ayushi Sharma
AU - Alicia Gressent
AU - Elsa Real
AU - Khanh Ninh Nguyen
AU - Magali Corso
AU - Mathilde Pascal
AU - Sylvia Medina
AU - Vérène Wagner
AU - Rémy Slama
AU - Augustin Colette
AU - Kévin Jean
PY - 2026
DA - 2026/10/28
JO - Environment International
DO - 10.1016/j.envint.2026.110555
UR - https://hal.science/hal-05842489v1
AB - Background: Climate mitigation can deliver substantial air quality co-benefits, yet these remain poorly quantified across pathways ranging from sufficiency-to technology-driven transitions. This study compares four French energy-transition scenarios for 2030 and 2050 against a 2019 baseline under fixed meteorology, evaluating annual PM 2.5 and NO 2 concentration changes and health and economic co-benefits. Methods: PM 2.5 and NO 2 concentrations for 2030 and 2050 were estimated with the CHIMERE chemistrytransport model using scenario-specific emission projections. Health impacts relative to 2019 were assessed via disease-specific lag assumptions, covering yearly premature mortality, morbidity, DALYs, and economic benefits across nine cardiometabolic and respiratory outcomes (hypertension, lung cancer, acute myocardial infarction, stroke, COPD, type-2 diabetes, respiratory infections, asthma in children and adults). Findings : Annual population-weighted exposure in continental France is projected to fall by 24% (PM 2.5 ) and 45% (NO 2 ) by 2030, and by 40% (PM 2.5 ) and 75% (NO 2 ) by 2050, relative to 2019 consistently under all four 2050 transition scenarios. Health gains, assessed over each period under delayed-impact assumptions, were substantial and broadly consistent across the four scenarios. Annual avoided premature deaths are projected to reach 8,800-9,300 (PM 2.5 ) and 11,000-12,800 (NO 2 ) by 2030, rising to 21,300-22,100 (PM 2.5 ) and 24,500-26,200 (NO 2 ) by 2050. Avoided morbidity cases reached nearly 40,000 (PM 2.5 ) and 15,000 (NO 2 ) by 2030 to 68,000 (PM 2.5 ) and 20,300 (NO 2 ) by 2050, with DALYs averted increasing from nearly 150,000 in 2030 to 230,000 by 2050 across the pollutants. By 2050, direct lifetime medical cost savings reached approximately e780-810 (S4-S1) million/year for PM 2.5 and were markedly smaller for NO 2 , at approximately e60-64 million/year (S4-S1). Annual intangible cost savings (discounted to present value) totalled approximately e19-20 billion for PM 2.5 and e17-18 billion for NO 2 across S1-S4. Conclusion: Net-Zero transition can deliver substantial health and economic co-benefits across diverse policy pathways. These findings support integrating co-benefits into climate policy frameworks to strengthen the evidence base for ambitious mitigation action.
SN - 0160-4120
ER -