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Load management as a way of covering peak demand in Southern Germany

Final report on a study conducted by Fraunhofer ISI and Forschungsgesellschaft für Energiewirtschaft
: Klobasa, Marian; Angerer, Gerhard; Lüllmann, Arne; Schleich, Joachim; Buber, Tim; Gruber, Anna; Hünecke, Marie; Roon, Serafin von

Fulltext urn:nbn:de:0011-n-2977822 (12 MByte PDF)
MD5 Fingerprint: 8fa6a977ab06b3476cece2956f842c0d
Created on: 22.7.2014

Berlin: Agora Energiewende, 2014, 112 pp.
Study, Electronic Publication
Fraunhofer ISI ()

This study stems from the question of what part can be played by electricity consumer load management in guaranteeing security of supply in southern Germany. The aim of the study is to as accurately as possible determine the realizable potential of a region already affected by network shortages and reduced generation capacities. The focus was therefore placed on the potential that can be implemented at short notice - potential that can be expected in particular in relation to industrial applications and to applications that can already be activated today, such as heat pumps. For the purposes of the study, interviews were conducted with companies, energy utilities, and service providers, and an online survey was conducted among approximately 300 companies. Data collection and the calculation of potential were based on the evaluation of existing studies and statistics, and on data from 40 company visits.
In total in southern Germany, there is realizable potential of approximately one gigawatt (GW) that can be made available for a period of one hour. Just under half of this potential can be made available by applications and processes in the energy-intensive industries. This potential is already used for the purposes of optimized electricity procurement and therefore reduces the system-wide peak load. It is also available as additional potential in the balancing energy market and as redispatch potential. The other half of the potential is made available by industrial cross-section technologies. This potential can likewise contribute to a reduction in the peak load and also to the balancing energy market and redispatch. Activatable applications such as heat pumps and electric storage heaters can play a part in security of supply by contributing to the balancing energy market and/or redispatch. However, as is the case with the energy-intensive processes, their contribution to a reduction in the peak load is very limited, because these applications tend not to be connected at peak load times.
There are currently not the appropriate programs and parameters in place for more intensive use of this identified potential. The lion's share of the identified loads therefore do not meet the requirements of Germany's Interruptible Loads Ordinance (AbLaV). For loads to be able to contribute to security of supply, the minimum load requirements, advance notice times, etc. need to take the characteristics of loads into account accordingly. Flexible electricity consumers can then be an affordable alternative to conventional generation capacity.