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The Impact of Renewable Power Generation on the Profitability of Solar District Heating - An Economic Point of View

Sperber, Evelyn (2014) The Impact of Renewable Power Generation on the Profitability of Solar District Heating - An Economic Point of View. 2nd International Solar District Heating Conference, 03.-04. Jun. 2014, Hamburg.

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The intermittency of power generation by wind and photovoltaic results in volatile spot prices at the power exchanges. As a consequence amendments in the operational strategies of power plants are required. For combined heat and power (CHP) units in district heating (DH) networks this means that production is particularly profitable in periods with high spot prices. In situations with low spot prices, in turn, it can be more cost-efficient to operate available peak load boilers instead of the CHP to supply the required heat. These circumstances can make solar district heating economically attractive. Additional flexibility in DH systems based on CHP is achieved by integrating electric boilers and heat pumps into the operational strategy. In this paper concepts for technically and economically optimized “smart” DH systems including solar are presented. The interaction of heat producers in different configurations of DH systems is simulated with a dynamic simulation tool (TRNSYS 17). To investigate the profitability of solar district heating, heat costs of different configurations of DH systems with and without solar are computed. The simulations reveal that in smart DH systems solar heat can displace expensive heat from peak load boilers. It is further shown that solar collectors do not only reduce operating costs of DH systems but are even profitable from a full cost perspective. Sensitivity tests point out that increasing prices of fossil fuels as well as higher shares of PV in power generation prove advantageous to solar district heating.

Item URL in elib:https://elib.dlr.de/89663/
Document Type:Conference or Workshop Item (Speech)
Title:The Impact of Renewable Power Generation on the Profitability of Solar District Heating - An Economic Point of View
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Sperber, Evelynevelyn.sperber (at) dlr.deUNSPECIFIED
Date:June 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Solar District Heating, CHP, spot market prices, renewable power generation
Event Title:2nd International Solar District Heating Conference
Event Location:Hamburg
Event Type:international Conference
Event Dates:03.-04. Jun. 2014
Organizer:AGFW - Energy efficiency association for heating, cooling and CHP
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy (old)
DLR - Research area:Energy
DLR - Program:E MS - Systems analysis
DLR - Research theme (Project):E - Systems Analysis and Technology Assessment (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Systems Analysis and Technology Assessment
Deposited By: Sperber, Evelyn
Deposited On:08 Jul 2014 16:05
Last Modified:31 Jul 2019 19:46

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