Department of Mechanical Engineering

Energy Efficiency and Systems

Energy efficiency plays a key role in solving challenges related to developing a sustainable future for human societies, highlighting the need to optimise energy systems of all sizes.
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In the Energy Efficiency and Systems research group, research is focused on energy generation and energy consumption systems. The scale of these systems ranges from single buildings to industrial energy systems and continental energy networks.

Despite the variety of application areas, common research methods provide opportunities for close cooperation between the group's researchers, thus providing the base of knowledge needed for top-level research. This knowledge base also provides possibilities for international research cooperation.

Efficient energy use and indoor climate in buildings, energy- and material-efficient technologies, process concepts and process integration in industry, and optimal energy systems of communities are the key research knowledge in the group. The basis of the research is in the increasing complexity of energy systems and the need to reduce their environmental impact.

The main research tools are different types of analysis, simulation and optimisation methods used in computer software and programs. These computer programs include both leading commercial software and programs created by the group. Experimental methods are also used, focusing on efficient integration of renewable energy in buildings, on drying technology and on measuring the indoor-air quality and performance of energy systems in buildings.

The societal and economic impact of energy technologies is studied by applying system analysis tools to search for ways to integrate renewable energy and to reduce greenhouse gas emissions in energy systems of both industrialised countries like Finland and developing countries. The tools that are utilised include life-cycle approaches, carbon footprint calculation, (primary) energy efficiency analysis, exergy analysis, production simulation and multi-objective optimisation, GIS analysis, investment analysis as well tools for multicriteria decision making. Research is done within national Finnish research programs, the EU’s Horizon programme and in other international research programmes.

The group also studies large transformations of energy systems to reach carbon-neutrality. Medium- and long-term energy system transformations are studied with energy system models, such as EnergyPLAN and EnergyPRO as well as in-house models of electricity markets and demand-side management. The focus of research is on modelling and exploring future developments of national energy systems, city-level heating systems and international electricity markets.

Latest publications

How do cities promote urban sustainability and smartness? An evaluation of the city strategies of six largest Finnish cities

Hannele Ahvenniemi, Aapo Huovila 2020 Environment, Development and Sustainability

Social acceptability of using low carbon building: a survey exploration

Sadaf Alam, Md.Munjur E. Moula, Risto Lahdelma 2020 International Journal of Sustainable Energy

Touching the invisible : Exploring the nexus of energy access, entrepreneurship, and solar homes systems in India

Venkata Bandi, Tiia Sahrakorpi, Jukka Paatero, Risto Lahdelma 2020 Energy Research and Social Science

Rakennusten sisä- ja ulkoilman välisen staattisen paine-eron tavoitetaso

Marko Björkroth, Lari Eskola, Juha Vinha, Risto Kosonen 2020 Sisäilmastoseminaari 2020

The impact of wind power on electricity market competition in the Baltic countries

Alessio Coccia, Anahita Farsaei, Sanna Syri 2020 2020 17th International Conference on the European Energy Market, EEM 2020

Interruptibility in private electric vehicle charging: Case Finland

Johannes Einolander, Risto Lahdelma 2020 Conference proceedings of the 33rd Electric Vehicle Symposium (EVS33)

Energy and Economic Analysis of Flash Steam Geothermal Power Plants in Lebanon

Mamdouh El Haj Assad, Mohammad AlShabi, Ali Khosravi, Abir Hamida, Zafar Said 2020

Rakennusten paine-erojen mittausohje

Lari Eskola, Marko Björkroth, Risto Kosonen, Juha Vinha 2020 Sisäilmastoseminaari 2020
More information on our research in the Research database.
Research database

Research group members

Sami Lestinen

Mechanical Engineering

Yuchen Ju

Doctoral candidate
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