This article examines the origins of national electrification in Chile, situating its technocratic promoters within a broad trend – unfolding across Latin America – toward the ‘rational’ management and conservation of natural resources by the state. It surveys the early history of Chilean electrification (1890s–1940s) to show how conservationist thinking flowed through discussions and debates among engineers about the proper uses of the country's waters. These ideas eventually shaped the 1943 national electrification plan, which focused on hydropower. The article sheds new light on the history of Chile's technocracy, the relationship between perceptions of the environment and development planning, and the political and economic debates over national electrification. It also shows how the conservationist dilemma of using versus preserving natural resources operated within a utilitarian and highly technical framework for thinking about nature's bounty. The article thus contributes to recent historical scholarship on conservation and environmental technocrats in Latin America.

Latin America participated in the electric revolution which profoundly transformed the most developed Western economies between 1880 and 1930. The qualitative empirical evidence shows that Latin American electrification began with little delay compared to those economies. This article provides new quantitative evidence consisting of annual series about a reliable indicator of the degree of electrification of the Latin American nations. The database built shows that towards 1930 electricity consumption per inhabitant in Latin America was far below that of most advanced economies, and only Latin American leaders in the electrification process had reached power consumption levels similar to the European late comers. Unlike other newly industrializing economies, the region was not able to quickly incorporate new technology to overcome their backwardness.

The impact that the new energy source, electricity, had on the economic growth of a number of countries –USA, UK, France, Italy, Spain and Canada– characterised by their different coal endowments is the principal objective of this article. The new energy, amongst its other advantages, reduced the dependence on natural resources of coal as it could be generated out of different primary energies: namely water or coal. In order to assess the importance of this reduced dependence, a coal-and-electricity energy database is presented for all six countries. We show that the relative prices electricity-coal were low in countries with poor coal endowments, and we find that there was a negative relationship between relative prices electricity-coal and economic growth. Moreover, there was a relationship between the industrial electrification process in countries with no coal deposits and their investment process, their labour productivity increase, their economic and manufacturing industry growth, and the structural change they underwent.