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Gewählte Master / Diploma Thesis:

Lukas Schmitz (2021): Photovoltaik: Strategien für Altanlagen und zukünftige Potenziale in Weinbaubetrieben.
Master / Diploma Thesis - Institut für Landtechnik, BOKU-Universität für Bodenkultur, pp 194. UB BOKU obvsg FullText

Data Source: ZID Abstracts
The expansion of photovoltaics in Germany was promoted from year 2000 onwards with a feed-in tariff guaranteed for 20 years under the Renewable-Energy-Sources Act (EEG). Since then, photovoltaics has developed from a niche to a mass technology and a mainstay of the energy transition. For the first EEG plants of the year 2000, the period of guaranteed compensation expired with the cut-off date of December 31, 2020. The primary objective of the present work was to focus on the prospects for a possible continued operation of these plants on a winery and to compare them with the alternative of a new PV investment. For this purpose, a representative model winery was designed and the energy flows of the areas of vineyard management, cellar operations and building energy were determined. Furthermore, the performance potential at the model site was measured using data from a reference plant and the PVGIS geoinformation system. The analyses of the economic efficiency further differentiated between two system scalings of 30 kWp and 92.4 kWp in order to simulate the effects of deviating legal framework conditions for self-consumption. It was shown that, in principle, both post-subsidized existing plants and new PV plants can be operated economically, taking into account low self-consumption quantities in relation to the wineries total energy consumption. The existing plants recorded shorter payback periods and a higher net present value in comparison. Assuming the same self-consumption conditions, new plants with a nominal capacity of more than 30 kWp are at a legal disadvantage and offer the lowest potential return on investment. An increase in self-consumption has a positive effect on the profitability of all plants. With regard to a maximum exploitation of the self-consumption potential, the study could not name an ideal solution from which a direct economic benefit for a winery results.

1.Mitwirkender: Gronauer Andreas
2.Mitwirkender: Kral Iris

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