Please note! Course description is confirmed for two academic years, which means that in general, e.g. Learning outcomes, assessment methods and key content stays unchanged. However, via course syllabus, it is possible to specify or change the course execution in each realization of the course, such as how the contact sessions are organized, assessment methods weighted or materials used.


-Understand system level approach to thermal energy storage between Power plants,

Industry, Community and building level

-Can prepare fundamental heat and mass balances of thermal energy storages

-Connect the need for thermal energy storage created by both RES-Electricity and RES-Heat

-Compare functioning of different energy storage technologies & materials

-Able to characterize energy storage by technology, temperature, and timescale

Credits: 3

Schedule: 03.04.2023 - 24.05.2023

Teacher in charge (valid for whole curriculum period):

Teacher in charge (applies in this implementation): Annukka Santasalo-Aarnio

Contact information for the course (applies in this implementation):

CEFR level (valid for whole curriculum period):

Language of instruction and studies (applies in this implementation):

Teaching language: English. Languages of study attainment: English


  • valid for whole curriculum period:

    This course introduces system level approach to thermal energy storage (TES), considering the fundamentals of TES, and how it can improve the sustainability of energy systems. TES is introduced by assessing the need for its application, including

    excess heat from industrial and energy sector installations, production and demand mismatch (especially with RES production) and the role of consumer side incentive such as dynamic electricity and heat tariffs. A common approach is taken to all TES technologies emphasizing the importance of temperatures and timescale (seasonal vs short term). The use of TES at different levels is then assessed as follows:

    1. Power plants, Industrial level, including use of DH network for storage
    2. Community level e.g. ATES, BTES, CTES, PTES
    3. Buildings e.g. Thermal mass, phase change materials, Chemical storage, DSM with HP ground heat storage (rock/soil)

Assessment Methods and Criteria
  • valid for whole curriculum period:

    - Personal assignments 


  • valid for whole curriculum period:

    - Lectures (Online or from video)

    - Personal assignments


Substitutes for Courses
SDG: Sustainable Development Goals

    7 Affordable and Clean Energy

    9 Industry, Innovation and Infrastructure

    11 Sustainable Cities and Communities

    13 Climate Action


Further Information
  • valid for whole curriculum period:

    This course is very flexible and suits well students with restrictions in timetables. This course can be directly take remotely (no presence in Otaniemi obligatory), there it neither any time dependent activities (all the lectures can be taken when suitable for the students). Course does have DL for personal tasks.

    Teaching Language : English

    Teaching Period : 2022-2023 Spring IV - V
    2023-2024 Spring IV - V

    Enrollment :

    The course has maximum size of 30 students. Priority for students at Fitech. Registration for the course via Sisu (