Implementing Geothermal Plants in the Copenhagen District Heating System

Louise Overvad Jensen, Christine Erikstrup Hallgreen, Esben Larsen, Niels Houbak (Editor), Brian Elmegaard (Editor), Bjørn Qvale (Editor), Michael J. Moran (Editor)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The possibility of implementing geothermal heating in the Copenhagen district-heating system is assessed. This is done by building up general knowledge on the geological factors that influence the development of useable geothermal resources, factors concerning the exploration and utilization of geothermal energy in Denmark as well as the Danish potential, which, in former investigations, has been found to be around 100.000 PJ annually, and the economical potential is less, about 15 PJ/year. Since a considerable amount of the Danish power supply is tied to weather and the demand for heating, an increasing demand for flexibility has been raised. Implementing geothermal heating would improve the flexibility in the Eastern Danish power system. Based on this information, as well as, on the hourly values of the expected production and consumption in 2010 and 2020, a model of the Copenhagen power and heating is developed - including a geothermal heating plant of about 110 MW. The price of the heat from this plant has been calculated to be approximately 75 DKK/GJ in 2010 and 65 DKK/GJ in 2020. As the present price is about 70-100 DKK/GJ, it is found that implementing geothermal heating in the Eastern Danish district heating system is financially sustainable. Added to the other advantages concerning flexibility and the environment, geothermal heating is considered to be a serious proposal for the future power and heating system in Eastern Denmark. Keywords: Geothermal plants, Electricity surplus
Original languageEnglish
Title of host publicationThe 16th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems
Publication date2003
Publication statusPublished - 2003

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