The transformation of the energy system and especially the electricity system into a renewable-based system requires systemic changes of the different system components. The planned progressive decommissioning of fossil-or nuclearbased power plants implies that renewable-based power plants need to take over their functions. This article examines the possible role of bioenergy-based plants during the different phases of the energy system transformation. Our findings provide strong evidence that bioenergy can supply the necessary balancing and ancillary services in order to guarantee system stability and security of supply while simultaneously covering electricity and heat demand. Only in a later stage of the transformation process, it seems to be necessary to operate in a mainly demand-oriented mode. Besides the economic dimension, the political and scientific debate must take the various systemic and environmental impacts of bioenergy into account to maintain the ability of bioenergy to serve the energy system. The economic points of failure of the recent policy are being pointed out and it is shown that recent legislation is expected to lead to a decrease of the installed bioenergy power.

No abstract

Summary: The intended transformation of the energy supply system will completely change the rationality of the electricity system by establishing the variable renewable energies (VRE, that is wind, photovoltaic and large parts of the run-of-the-river hydroelectricity) as its formative pillar. As they are not reliant on fuels to produce electricity, they run without marginal costs and with very low emissions. However, their production can only be precisely predicted on the short term which causes the need for a high flexibility of the remaining electricity generators and other flexibility options. The fundamental characteristics of the VRE require an adjustment of the present market-based processes concerning the power plant dispatch and the allocation of the generated VRE-electricity amounts. This article presents the developed suggestions for a real time transfer of the VRE and the residual load market and discusses possible implementations of these new allocation mechanisms.

No abstract

No abstract