{"id":21588,"date":"2026-06-22T11:47:06","date_gmt":"2026-06-22T09:47:06","guid":{"rendered":"https:\/\/faere.fr\/2026\/"},"modified":"2026-06-23T16:50:31","modified_gmt":"2026-06-23T14:50:31","slug":"2026","status":"publish","type":"post","link":"https:\/\/faere.fr\/en\/2026\/","title":{"rendered":"2026"},"content":{"rendered":"

WP 2026.06 – Mobility Gini: distributional effects of climate policies through transportation choices<\/span><\/a><\/h4>\n
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Andrea Rangel – Julie Metta – Aude Pommeret<\/strong><\/p>\n<\/div>\n

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Abstract<\/strong><\/p>\n

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The energy transition implies significant changes for the transport sector. In particular, the mobility of households will be largely impacted by public policies aiming at mitigating climate change. However, such policies may have adverse distributional effects that enhance the mobility cost for low-income people or even prevent them from being mobile. Therefore, we build a geographical distribution index based on availability and costs of transportation – a Mobility Gini. This index encompasses household heterogeneity towards transportation choices, household value of travel time and comfort, and transportation offers in the different regions. In addition, we develop the Emissions Mobility Gini to account for lack of access to clean transport. To understand the decision-making process of households, we develop a theoretical model of transport choice versus consumption of other goods. With this model, we test the effects of policies for the Just and Clean transition of the transport sector on household choices and their effects on our proposed inequality measures. Thanks to the methods proposed here, we quantify the potential inequality effects of climate policies for the transport transition.<\/span><\/p>\n<\/div>\n

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WP 2026.05 – Strategic Fossil Expansion and the Timing of the Energy Transition<\/a><\/h4>\n
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Fabien Prieur<\/strong><\/p>\n<\/div>\n

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We develop a dynamic model of exhaustible resource exploitation, with exploration, in which a regulator determines the end date of the fossil regime by trading off industry profits against climate damages. The weight assigned to damages reflects the fossil industry’s pre-existing political influence. We compare Nash and Stackelberg interactions between the industry and the regulator. Under Nash behavior, regulation shortens the fossil regime and reduces cumulative emissions relative to the unregulated benchmark. Under Stackelberg leadership, however, a monopoly may increase exploration relative to the Nash outcome in order to delay the transition. Calibrating the model to global oil market data, we obtain that strategic leadership increases reserves by approximately 7% relative to the Nash outcome and delays the transition by about 2-3 years. The analysis thus provides an explanation for sustained upstream fossil fuel investment despite announced net-zero commitments.<\/span><\/p>\n<\/div>\n

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WP 2026.04 – Employment effects of environmental taxes and subsidies<\/a><\/h4>\n
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Issa Sanou<\/strong><\/p>\n<\/div>\n

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Abstract<\/strong><\/p>\n

This paper presents a new perspective on environmental tax reform. Assuming that households prefer clean goods over dirty ones, we demonstrate that implementing taxes on dirty goods alongside subsidies for clean goods can lead to an increase in employment. This rise in employment is driven by enhanced purchasing power resulting from a greater decline in prices compared to wages, motivating households to work more. As for the environmental dividend, consumption of polluting goods tends to decrease. However, an unintended feedback effect emerges due to the increased purchasing power resulting from the positive impact of subsidies on employment and the consumption of non-polluting goods. If the two types of goods are not perfect substitutes, this rise in purchasing power can lead to greater consumption of polluting goods, thereby limiting improvements in environmental quality. Hence, while subsidy policies can be more acceptable due to the employment benefit, their efficiency is still questionable.<\/span><\/div>\n
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WP 2026.03 – The Study of the Economic Effects for an Island of a Disruption in Commercial Links with the Mainland: The Case of the Island of Yeu<\/span><\/a><\/h4>\n

Hugo Emenegger – Clément Cohic – Sophie Pardo – Agnès Baltzer – Elsa Cariou<\/strong><\/p>\n

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Abstract<\/strong><\/p>\n

Assessing the impacts of climate change is essential to making informed decisions about protective planning against climate risks. These impacts can be direct (resulting from the physical effect of the hazard on assets) or indirect (arising from direct impacts). The evaluation of direct damages is relatively consensual and is usually conducted through damage stage-damage functions. However, the evaluation of indirect damages creates significant debate within the scientific community. This article proposes a volumetric analysis of the indirect impacts of sea level rise on insular economic activity. One of the characteristics of the Island of Yeu’s economy is its strong dependence on imports from the mainland. The method presented here estimates the concrete effects of a disruption in maritime connections between the island and the mainland for each economic entity of the territory, defining thresholds of impact ranging from stockout to generalized shortages across the island. This research also allows us to observe certain aggravating factors of impacts, particularly those related to the tourism economy. Results show, for example, that the hotel and catering sector is the most vulnerable to this risk and could experience a stockout after five days without island resupply. This result leads to a risk of shortages, exacerbated during the summer period by the sharp increase in the number of people on the island. The work presented leads us to consider volumetric analysis of indirect impacts as complementary to monetary evaluation methods, since it produces results at the micro- and meso-economic levels of a radically different nature, enabling the identification of levers of action to better protect the assets of a territory.<\/span><\/div>\n
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WP 2026.02  <\/span>Reconciling Eco and Ego? The interplay between environmental and image concerns in consumption choices<\/span><\/a><\/h4>\n
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Jérôme Pivard – <\/span>Vincent Martinet<\/strong><\/p>\n

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Abstract<\/strong><\/p>\n

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We explore the interplay between two key individual drivers of green consumption: intrinsic moral concerns for the environment and reputational concerns for social image. Our microeconomic behavioral model characterizes choices among lifestyles differing in environmental impacts (brown\/green) and conspicuousness (positional\/discreet), depending on how strongly one values each of these motives. We show that image concerns can substitute for environmental concerns in driving green consumption across a limited but central range of preferences, in particular through the purchase of green positional goods. Such conspicuous conservation can green individual consumption (reconciling Eco and Ego), especially among image-sensitive consumers, but it yields environmental benefits only under specific economic conditions. Indeed, the environmental impact of a lifestyle depends critically on its relative impact intensity, i.e., the pollution per dollar spent on this lifestyle, more than on the pollution per unit of the representative good of the lifestyle, driving volume effects and behavioral rebound effects, which both reduce the environmental benefits of green lifestyles. Knowing the collective distribution of preferences may help design targeted policies, as those preferences strongly determine policy effectiveness. Our findings are especially relevant for policies that aim to foster greener consumption choices in different economic contexts (e.g., green nudging, environmental taxes with higher rates on positional goods…).<\/span><\/div>\n
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WP 2026.01 <\/span><\/span>Climate Policies in the Housing Market?<\/a><\/strong><\/h4>\n
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Paloma Péligry – Grégoire Sempé<\/strong><\/p>\n<\/div>\n

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Mitigating CO2 emissions in housing through retrofits has emerged as a crucial political issue. In this paper, we assess the macroeconomic and distributional impacts of key climate policies in the residential housing market. We build a quantitative heterogeneous agent model featuring high (green) and low (brown) energy efficient houses. Brown houses are associated with an additional cost of energy and can be retrofitted to a green house. We compare the effects of three policies: a tax on energy, a tax on brown rental income and a retrofit subsidy. The taxes widen the green to brown price ratio by penalizing brown houses, whereas the subsidy reduces it by lowering the substitution cost. The energy tax raises the user cost of brown housing, tightening affordability and increasing the renter share. The tax on brown rental income generates a “brown reallocation”: by decreasing brown house prices while leaving the user cost unchanged, it induces low-income renters to transition into brown homeownership. Finally, the subsidy improves affordability, enabling low-income households to enter green homeownership.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"WP 2026.06 – Mobility Gini: distributional effects of climate policies through transportation choices Andrea Rangel – Julie Metta – Aude Pommeret Abstract The energy transition implies significant changes for the transport sector. In particular, the mobility of households will be largely impacted by public policies aiming at mitigating climate change. However, such policies may have","protected":false},"author":506,"featured_media":21587,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[248],"tags":[],"class_list":["post-21588","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-working-papers"],"acf":[],"_links":{"self":[{"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/posts\/21588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/users\/506"}],"replies":[{"embeddable":true,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/comments?post=21588"}],"version-history":[{"count":2,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/posts\/21588\/revisions"}],"predecessor-version":[{"id":21621,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/posts\/21588\/revisions\/21621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/media\/21587"}],"wp:attachment":[{"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/media?parent=21588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/categories?post=21588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/faere.fr\/en\/wp-json\/wp\/v2\/tags?post=21588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}