Economic premises for SOFC cogeneration in Finnish households

Kari Alanne, Teemu Vesanen, Hannu Keränen, Mika Vuolle

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In this paper, we present the economic analysis of a solid-oxide fuel cell (SOFC) micro-cogeneration plant in a single-family low energy house in Finland. Here, we implement a new solid-oxide fuel-cell (SOFC) model in the dynamic building simulation software IDA – Indoor Climate and Energy to obtain the match between energy demand and supply. In our computational study, we first estimate the break-even values for both the buyback price of electricity and plant investment that make an SOFC plant financially viable in a comparison with a water-based gas boiler heating system without cogeneration. Second, we determine the sensitivity of break-even prices in terms of the electrical power, overall efficiency and two operational strategies. Our results suggest that the optimal operation would encompass a constant run with electrical power no more than 1 kWe. In the above case, the break-even buyback price would remain less than 0.04 EUR/kWh, provided that the overall efficiency exceeds 80 %
Original languageEnglish
Title of host publicationProceedings of Clima 2007 WellBeing Indoors
Place of PublicationHelsinki
Publication statusPublished - 2007
MoE publication typeA4 Article in a conference publication
Event9th Rehva World Congress, Clima 2007 - WellBeing Indoors - Helsinki, Finland
Duration: 10 Jun 200714 Jun 2007
Conference number: 9

Conference

Conference9th Rehva World Congress, Clima 2007 - WellBeing Indoors
Abbreviated titleCLIMA 2007
CountryFinland
CityHelsinki
Period10/06/0714/06/07

Keywords

  • fuel cell
  • simulation
  • building
  • cogeneration

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    Alanne, K., Vesanen, T., Keränen, H., & Vuolle, M. (2007). Economic premises for SOFC cogeneration in Finnish households. In Proceedings of Clima 2007 WellBeing Indoors