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In the last decades, energy modelling has supported energy planning by offering insights into the dynamics between energy access, resource use, and sustainable development. Especially in recent years, there has been an attempt to strengthen the science-policy interface and increase the involvement of society in energy planning processes. This has, both in the EU and worldwide, led to the development of open-source and transparent energy modelling practices. This paper describes the role of an open-source energy modelling tool in the energy planning process and highlights its importance for society. Specifically, it describes the existence and characteristics of the relationship between developing an open-source, freely available tool and its application, dissemination and use for policy making. Using the example of the Open Source energy Modelling System (OSeMOSYS), this work focuses on practices that were established within the community and that made the framework's development and application both relevant and scientifically grounded.

We decompose changes in the Gini coefficient to investigate whether the Conditional Cash Tranfers (CCT) have had an inequality reducing effect in three Latin American countries: Brasil, Mexico and Chile. We conclude that CCT programs helped reducing inequality between the mid-1990s and the mid-2000s. The share of total income represented by the CCTs is very small, less than 1%. But as their targeting is outstanding, the equalising impact of CCTs was responsible for about 21% of the fall in Brazilian and Mexican inequality figures In Chile the effect was responsible for around 15% of the reduction.

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Instead of merely setting a lower bound on the wages of formal sector workers, minimum wages serve as a norm for wage setting more generally throughout the Mexican economy. Our results suggest that wages are commonly set at multiples of the minimum wage, and that changes in minimum wages influence wage changes across the occupational distribution. Moreover, our findings suggest that these normative features of minimum wages have their greatest impact on the mid-to-lower tail of the wage distribution, including the informal sector of the economy. Thus, the results lend support to the view that declining real minimum wages and stabilization programs that strengthened the link between wage levels, wage changes, and minimum wages, might account for a portion of the growing wage inequality in Mexico over the period of the late 1980s and early 1990s.