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The financial viability of an SOFC cogeneration system in single-family dwellings

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)403-416
Number of pages14
JournalJournal of Power Sources
Volume158
Issue number1
DOIs
Publication statusPublished - 14 Jul 2006
Externally publishedYes
Publication typeA1 Journal article-refereed

Abstract

In the near future, fuel cell-based residential micro-CHP systems will compete with traditional methods of energy supply. A micro-CHP system may be considered viable if its incremental capital cost compared to its competitors equals to cumulated savings during a given period of time. A simplified model is developed in this study to estimate the operation of a residential solid oxide fuel cell (SOFC) system. A comparative assessment of the SOFC system vis-a-vis heating systems based on gas, oil and electricity is conducted using the simplified model for a single-family house located in Ottawa and Vancouver. The energy consumption of the house is estimated using the HOT2000 building simulation program. A financial analysis is carried out to evaluate the sensitivity of the maximum allowable capital cost with respect to system sizing, acceptable payback period, energy price and the electricity buyback strategy of an energy utility. Based on the financial analysis, small (1-2 kW(e)) SOFC systems seem to be feasible in the considered case. The present study shows also that an SOFC system is especially an alternative to heating systems based on oil and electrical furnaces. (c) 2005 Elsevier B.V. All rights reserved.

Keywords

  • residential buildings, financial analysis, solid oxide fuel cell (SOFC), micro-CHP