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The crowding out of conventional electricity generation by renewable energy sources: implications from Greek, Hungarian, and Romanian electricity markets

To achieve ambitious energy-climate targets, all EU member states have introduced policies to support the market introduction of renewable energy sources (RES) generation. Motivated to close the gap of the merit order effect (MOE) in less mature Central and South East European electricity markets, we empirically confirm economic theory predictions that in the short run, an increase in RES generation reduces electricity prices. The merit order effect is initially econometrically confirmed and quantified. Different econometric model specifications are estimated to differentiate the MOE caused by wind and solar generation and to differentiate the MOE on high-load and low-load days. In addition, we simulate the adjustment of the realised day-ahead electricity prices to the no-RES generation scenario. Modern statistical methods are applied to bridge the gap in the limited public data availability to solve simulation models used in the power system or agent-based simulations. A family of data mining algorithms is applied for the merit order estimation used in the dynamic adaptation of the generation mix to the omitted RES generation. The estimated energy imbalance caused by the excluded RES generation is therefore compensated by the additional conventional generation dispatch according to the estimated power plant merit order. The estimated supply curves for each generation technology assist the reasoning behind the established MOE in econometric models. Based on our findings, policymakers should prioritise policies that facilitate the integration of RES into their electricity markets, which would in turn accelerate energy transition. With increasingly growing shares of renewables in the system, the governments need to rethink the support scheme, where the emphasis should be placed on efficiently integrating renewables in the power system by taking into account temporal and spatial dimensions.

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Developing the European Villages in the Republic of Moldova taken into account the Digital Economy Society Index (DESI)

The digital competitiveness of regions of EU member states is measured by the Digital Economy and Society Index (DESI), a composite index summarizing the progress made in connectivity, digital skills, internet use by citizens, digital integration of enterprises, farms and digital public services, while at the local government level there is currently no single indicator measured on a regular basis. Based on recent international and national researches, it can be concluded that with the development of digital technology, a significant increase in services and solutions available to citizens digitally is expected. Recent positive experiences of EU member states, which have been analyzed in previous research papers, show that the creation of jobs in agricol sectors in rural areas contributes to increasing household incomes. The objective of our study is to analyze and implement the methods and data sources for calculating DESI indicators at the level of local administrative units in the Republic of Moldova, in the context of the National Program for the European Village, launched in spring 2022. The results of the study will be the development of recommendations for local administrations on the use of the DESI index to coordinate the European evaluation parameters. The value of this work is in reinforcing activities for localisation of smart infrastructure and spatial data taking in consideration the DESI index and innovative products of the national Innovation Centres in innovative economics, stimulating investments in the creation of Smart Villages.

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