Divergence of renewable energy invention efforts in Europe

PublikationArtikel (med peer review)
EU, Företagandets villkor, Förnybar energi, Jonas Grafström, Patent


The objective of this paper is to investigate the presence of convergence (or divergence) of invention efforts per capita in the renewable energy field across European Union (EU) countries. Divergence may imply a risk of a lower level of goal fulfilment regarding the share of renewable energy in the EU energy mix. This is due to free-rider issues and sub-optimal investment levels, in turn making it more expensive and cumbersome to expand renewable energy production. Convergence suggests a possible faster renewable energy goal achievement. The econometric analysis is based on patent application counts per capita for 13 EU Member States over the time period 1990–2012. The methods used draw on the economic convergence literature. First, we rely on a panel data set to test for conditional β-convergence. Moreover, a distributional dynamics approach is employed to test for σ- and γ-convergence, and analyse the intra-distributional dynamics. The results indicate conditional β- and σ-divergence in renewable energy invention capabilities across the 13 countries, thus suggesting that some EU countries tend to free-ride on the development efforts of other Member States.
Related content: Working paper No. 295

Grafström, J. (2018). Divergence of renewable energy invention efforts in Europe: an econometric analysis based on patent counts. Environmental Economics and Policy Studies. DOI: 10.1007/s10018-018-0216-y

Liknande innehåll

Ratio Working Paper No. 351: Knowledge Spillovers in the Solar energy sector
Working paperPublikation
Grafström, J.


Publicerat i



The purpose of this paper is to provide an analysis of the existence and possible direction of international knowledge spillovers in the solar energy sector. Specifically, the paper investigates how the accumulation of solar energy patents and public R&D spending affected the output of domestic granted solar energy patents. The econometric analysis relies on a data set consisting of most of the OECD countries plus China and analyzes two time periods; from 1990 to 2014 and the years 2000 to 2014. To analyze the data material, a Poisson fixed-effects estimator based on the Hausman, Hall and Griliches (1984) method was used. The empirical findings suggest that the domestic accumulation of patents and R&D is important for the potential development of new ones. Indeed, early investment in specific technology can be an indicator of future leadership in that field.

Ratio Working Paper No. 350: A quickly transforming labour market
Working paperPublikation
Uddén Sonnegård, E.


Publicerat i

Ratio Working Paper


The Covid-19 pandemic has made it clear that the labour market situation can change
extremely rapidly when there is an unexpected exogenous shock to the economy. Even
though the transformation of the labour market as a result of the development of ICT
(Information Communication Technology) industries facilitates more-flexible
conditions, it is now more important than ever for EU Member States to improve the
functioning of their labour markets. Member States need to increase possibilities for
training and retraining throughout peoples’ working lives in order to smooth the
transformation into a digital world of work.

The Effect of Marshallian and Jacobian Knowledge Spillovers on Jobs in the Solar, Wind and Energy Efficiency Sector
Artikel (med peer review)Publikation
Aldieri, L., Grafström, J., & Vinci, C. P.


Publicerat i

Energies, 14(14), 4269.


The purpose of this paper is to establish if Marshallian and Jacobian knowledge spillovers affect job creation in the green energy sector. Whether these two effects exist is important for the number of jobs created in related fields and jobs pushed away in other sectors. In the analysis, the production efficiency, in terms of jobs and job spillovers, from inventions in solar, wind and energy efficiency, is explored through data envelopment analysis (DEA), based on the Malmquist productivity index, and tobit regression. A panel dataset of American and European firms over the period of 2002–2017 is used. The contribution to the literature is to show the role of the spillovers from the same technology sector (Marshallian externalities), and of the spillovers from more diversified activity (Jacobian externalities). Since previous empirical evidence concerning the innovation effects on the production efficiency is yet weak, the paper attempts to bridge this gap. The empirical findings suggest negative Marshallian externalities, while Jacobian externalities have no statistical impact on the job creation process. The findings are of strategic importance for governments who are developing industrial strategies for renewable energy.

Aldieri, L., Grafström, J., & Vinci, C. P. (2021). The Effect of Marshallian and Jacobian Knowledge Spillovers on Jobs in the Solar, Wind and Energy Efficiency Sector. Energies, 14(14), 4269.

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