Hybrid energy system cost-optimal dimensioning for a Finnish kindergarten

Yuchen Ju; Xinyi Hu; Juha Jokisalo; Risto Kosonen; Altti Meriläinen; Antti Kosonen

Hybrid energy system cost-optimal dimensioning for a Finnish kindergarten

Yuchen Ju^*
, Xinyi Hu
, Juha Jokisalo
, Risto Kosonen
, Altti Meriläinen
, Antti Kosonen

^*Corresponding author for this work

LUT University

Research output: Contribution to journal › Article › Professional

Abstract

This study investigates cost-optimal dimensioning of a kindergarten hybrid energy system over a 25-year life cycle. Findings show high peak power demands make power fees dominate the total district heating costs. Consequently, varying district heat tariffs—considering waste heat integration—minimally impact the dimensioning, potentially undermining the waste heat utilization in district heating.

Original language	English
Pages (from-to)	29-33
Journal	REHVA Journal
Volume	2026
Issue number	2
Publication status	Published - 2026
MoE publication type	D1 Article in a trade journal

Funding

Authors would like to thank for the financial contribution from the B2RECoM project (Grant No. 10784/31/2022) mainly funded by Business Finland. The authors would like to gratefully acknowledge the partners of the B2RECoM and BLOCKCC projects.

Access to Document

https://www.rehva.eu/rehva-journal/chapter/hybrid-energy-system-cost-optimal-dimensioning-for-a-finnish-kindergarten

B2RECoM: Uusiutuvan sähkö- ja lämpöenergian älykäs käyttö ja varastointi rakennuksissa osana energiayhteisöä
Kosonen, R. (Principal investigator), Xue, T. (Project Member), Yuan, X. (Project Member), Liu, J. (Project Member), Ju, Y. (Project Member) & Jokisalo, J. (Project Member)
01/01/2023 → 31/12/2025
Project: BF Co-Innovation

Cite this

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title = "Hybrid energy system cost-optimal dimensioning for a Finnish kindergarten",

abstract = "This study investigates cost-optimal dimensioning of a kindergarten hybrid energy system over a 25-year life cycle. Findings show high peak power demands make power fees dominate the total district heating costs. Consequently, varying district heat tariffs{\textemdash}considering waste heat integration{\textemdash}minimally impact the dimensioning, potentially undermining the waste heat utilization in district heating.",

author = "Yuchen Ju and Xinyi Hu and Juha Jokisalo and Risto Kosonen and Altti Meril{\"a}inen and Antti Kosonen",

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AU - Ju, Yuchen

AU - Hu, Xinyi

AU - Jokisalo, Juha

AU - Kosonen, Risto

AU - Meriläinen, Altti

AU - Kosonen, Antti

PY - 2026

Y1 - 2026

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AB - This study investigates cost-optimal dimensioning of a kindergarten hybrid energy system over a 25-year life cycle. Findings show high peak power demands make power fees dominate the total district heating costs. Consequently, varying district heat tariffs—considering waste heat integration—minimally impact the dimensioning, potentially undermining the waste heat utilization in district heating.

M3 - Article

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VL - 2026

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Hybrid energy system cost-optimal dimensioning for a Finnish kindergarten

Abstract

Funding

Access to Document

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Projects

B2RECoM: Uusiutuvan sähkö- ja lämpöenergian älykäs käyttö ja varastointi rakennuksissa osana energiayhteisöä

Cite this