Synergetic urbanism: A theoretical exploration of a vertical farm as local heat source and flexible electricity user

Tess Blom*, Andrew Jenkins, Andy van den Dobbelsteen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The urban energy transition requires innovative heating and cooling systems, as well as enhanced flexibility in electricity usage. This paper explores the theoretical potential for vertical farms to contribute to the energy transition by supplying residual heat to local district heat networks and flexible electricity usage. A stepped approach was used to design energy systems that achieve thermal energy balance through heat and cold exchange between a vertical farm and buildings within a specific Dutch neighbourhood. Furthermore, alternative lighting strategies for vertical farms were explored to reduce grid congestion and to respond to electricity price fluctuations, limiting the mismatch between electricity generation and demand. Compared to the baseline scenario, the energy system with an integrated vertical farm reduces overall energy use by 15 %, even when accounting for the farm's electricity use. By adopting intermittent lighting that is better aligned with electricity price fluctuations, the vertical farm obtained annual cost savings of 14 %. The integration of vertical farms into energy systems can, therefore, contribute to the urban energy transition by producing residual heat to balance thermal energy system and save money for growers by optimising LED operations to align with electricity price fluctuations, whilst producing fresh vegetables for the city.
Original languageEnglish
Article number105267
Number of pages13
JournalSustainable Cities and Society
Volume103
DOIs
Publication statusPublished - 2024

Funding

This research is part of the TTW Perspectief programme “Sky High”, which is supported by AMS Institute, Bayer, Bosman van Zaal, Certhon, Fresh Forward, Grodan, Growy, Own Greens/Vitroplus, Priva, Philips by Signify, Solynta, Unilever, van Bergen Kolpa Architects, and the Dutch Research Council (NWO). The authors wish to thank Paul Voskuilen for sharing his expertise regarding the integration with electricity grids.

Keywords

  • Controlled environment agriculture
  • Energy transition
  • Residual heat
  • Heat exchange
  • Electricity price fluctuations
  • Intermittent light
  • Grid congestion
  • Flexible electricity use
  • Urban agriculture
  • Symbiosis

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