Renewable Energy Sources Act (Erneuerbare-Energien-Gesetz, EEG) is a prominent example Eckpunkte zur EEG-Reform: Der Energiewende nächster Akt. In order to slow down the rise in electricity prices, EEG reforms limited the expansion of The draft of the EEG clearly shows that onshore wind, which has the lowest EEG-Novelle - Eckpunktepapier (Stand 08 Dezember ). Szenarien „Eckpunkte EEG “, „Mehr teure EE“ und „Mehr günstige EE“ reform-eckpunkte,property=pdf,bereich=bmwi,sprache=de.


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BMU aErneuerbare Energien. BMU aRenewabley employed - impacts of the expansion of renewable energy on the German labour eckpunktepapier reform eeg, available online at: Juni in Berlin, available online at: BMWiEnergiedaten: Holzhammer [ 20 ] calculated that flexible power generation from biogas plants and eckpunktepapier reform eeg CHPU might reduce total system costs in One reason is that it saved fuels and the lower numbers of start-stop operations, inter alia, by conventional power plants overcompensate additional costs for flexible power generation from biogas plants with a number of full load hours per year.

In a previous study [ 21 ] we assessed the flexible biogas power generation eckpunktepapier reform eeg the average integration costs of surplus generation AICSG for the period of —, which is defined as a quotient of remuneration and surplus generation. We find that biogas plants have to be as flexible as possible to smooth the future residual load curve and to reduce the further demand for flexibility options in Germany.

Furthermore, the increasing extension of biogas plants may be more cost-effective for the system integration of intermittent renewable energies than their reduction or phase out.

Detailansicht — Deutsches Institut für Internationale Pädagogische Forschung

In another study for Germany, Eltrop et al. The annual amount of electricity generated by biomass plants is set to be constant.

To summarize, the above-mentioned studies show the impact of renewable energies on total system costs or the demand eckpunktepapier reform eeg further technologies to balance demand and supply, which become more important during the energy transformation process.

The future role of flexible power generation from biomass plants is especially analyzed in German publications.

Eckpunktepapier reform eeg pdf file

Nevertheless, the impact of varying biogas extension paths exogenously by policy makers on the composition of flexibility eckpunktepapier reform eeg and the total costs in the future German electricity system is not taken into account in previous publications.

In contrast to the endogenous optimization of flexibility options, e. Furthermore, according to the EEG revised in [ 4 ], details of the flexible biogas power generation are given by policy makers. With regard to the transformation process of the energy system towards renewable energies, the future role of eckpunktepapier reform eeg power generation from biogas plants determined exogenously by policy makers has to be assessed.


In this paper, we assess the eckpunktepapier reform eeg of flexibility options and the total costs in the German electricity system for the period of — by using a non-linear optimization model varying the extension path and mode of operation of biogas plants.

The objectives can be defined as follows: To analyze the impact of varying proportions of biogas plants on the required power generation from conventional power plants; To minimize the residual load demand by the optimization of flexible power generation from biogas plants; and To examine the effect of flexible power generation from biogas plants on eckpunktepapier reform eeg total costs of the electricity system.

Methodology With regard to the set objectives, we developed a method to describe the residual load curves with three biogas extension paths Section 2. The following procedure is based on two significant simplifications. Consequently, demand and supply has eckpunktepapier reform eeg be balanced without the import and export of electricity.


Selection of Representative Days and Calculation of the Residual Load Curve In order to select representative days as an input for the optimization model, we used hourly feed-in data from wind and PV plants and the electricity consumption provided eckpunktepapier reform eeg the German transmission system operators [ 23 ] and the European Network of Transmission System Operators for Electricity [ 24 ] based on the year Following the methodology of [ 25 ], we normalized the hourly feed-in data from intermittent renewable energies and the electricity consumption according to their maximum annual value and eckpunktepapier reform eeg the clustering algorithm to select and weight representative days.

In this study, we used four years,and and seven representative days per year to minimize the total costs in the future electricity system.

According to [ 26 eckpunktepapier reform eeg, a time resolution of 1 h for balancing demand and supply in an electricity system eckpunktepapier reform eeg high proportions of intermittent renewable energies was considered. As a consequence, time slices were used as input data for the optimization of flexible power generation from biogas plants and the minimization of total costs.

Biogas Extension Paths and Calculation of the Residual Load Curve Residual load is defined here as the electricity consumption minus the generation by intermittent renewable energies.

To calculate the residual load curves for the years considered, we took into account the normalized hourly data of the representative days and increased the installed capacities of intermittent renewable energies.