Department of Economics

Journal of Productivity Analysis 65(3) p. 1-20 Doi: https://doi.org/10.1007/s11123-026-00812-7

This paper links broadband development to regional economic growth, focusing on the optimal timing of investments. A production theoretical framework is proposed for characterizing the relationship between broadband investment and economic development. A two-stage estimation procedure combining Convex Nonparametric Least Squares with Linear Programming is developed for estimating optimal investment paths. The model framework is applied to a novel dataset comprising 21 regions in the Baltic countries. The results indicate that the Gross Regional Domestic Product could have been increased by up to 10% by adopting optimal regional investment paths. We find intercountry differences, where Latvian regions exhibited more inefficient investment strategies compared to regions in the neighbouring countries. There are also signs of overinvestment in broadband in some regions.

Marine Resource Economics 41(4) Doi: https://doi.org/10.1086/741965

Review of Economic Studies Doi: https://doi.org/10.1093/restud/rdag024

Abstract What are the effects of supply-side climate policies in the oil market? We use global company-level data to estimate the impact of 84 reforms of production taxes between 2000 and 2019 on oil production, exploration, and discoveries. We find that higher taxes primarily reduce companies’ exploration expenditures and oil discoveries, and also reduce short-term production of unconventional oil. We then quantify the implications for the oil market using a short- and medium-term dynamic model extending until the end of the century. Imposing a global climate royalty surcharge of 20 percentage points on oil producers reduces average annual emissions from oil by 5–7% in the first 5 years, and 9–20% in the medium term. If only OECD countries adopt this policy, 47–73% of the total emission reductions would be offset by increased production in non-OECD countries in the medium term.

National Bureau of Economic Research Doi: https://doi.org/10.3386/w34987

European Economic Review 182 Doi: https://doi.org/10.1016/j.euroecorev.2025.105205