| Role of critical metals in the future markets of clean energy technologies L Grandell, A Lehtilä, M Kivinen, T Koljonen, S Kihlman, LS Lauri Renewable energy 95, 53-62, 2016 | 335 | 2016 |
| Nitrogen evolution from coal, peat and wood during gasification: Literature review J Leppälahti, T Koljonen Fuel Processing Technology 43 (1), 1-45, 1995 | 334 | 1995 |
| Geochemical Atlas of Finland. Part 2: Tills T Koljonen, EM Cameron Journal of Geochemical Exploration 49 (3), 293-294, 1993 | 268 | 1993 |
| Emissions trading and investment decisions in the power sector—a case study in Finland H Laurikka, T Koljonen Energy Policy 34 (9), 1063-1074, 2006 | 233 | 2006 |
| Wood-pyrolysis oil as fuel in a diesel-power plant Y Solantausta, NO Nylund, M Westerholm, T Koljonen, A Oasmaa Bioresource Technology 46 (1-2), 177-188, 1993 | 191 | 1993 |
| Inter-sectoral effects of high renewable energy share in global energy system E Pursiheimo, H Holttinen, T Koljonen Renewable Energy 136, 1119-1129, 2019 | 147 | 2019 |
| Beyond 2020—Strategies and costs for transforming the European energy system B Knopf, YHH Chen, E De Cian, H Förster, A Kanudia, I Karkatsouli, ... Climate Change Economics 4 (supp01), 1340001, 2013 | 120 | 2013 |
| Rare earth elements in granitic rocks T Koljonen, RJ Rosenberg Lithos 7 (4), 249-261, 1974 | 68 | 1974 |
| Path toward 100% renewable energy future and feasibility of power‐to‐gas technology in Nordic countries E Pursiheimo, H Holttinen, T Koljonen IET Renewable Power Generation 11 (13), 1695-1706, 2017 | 66 | 2017 |
| Simple models for operational optimisation B Bøhm, S Ha, W Kim, B Kim, T Koljonen, HV Larsen, M Lucht, Y Park, ... Contract 524110 (10), 2002 | 66 | 2002 |
| CO2 capture, storage and reuse potential in Finland T Koljonen, H Siikavirta, R Zevenhoven, I Savolainen Greenhouse Gas Control Technologies-6th International Conference, 291-296, 2003 | 50 | 2003 |
| Potential for carbon capture and storage (CCS) in the Nordic region S Teir, J Hetland, E Lindeberg, A Torvanger, K Buhr, T Koljonen, J Gode, ... VTT research notes 2556, 2010 | 49 | 2010 |
| Energian varastoinnin nykytila R Alanen, T Koljonen, S Hukari, P Saari VTT tiedotteita 2199, 1455-0865, 2003 | 45 | 2003 |
| The role of CCS and renewables in tackling climate change T Koljonen, M Flyktman, A Lehtilä, K Pahkala, E Peltola, I Savolainen Energy Procedia 1 (1), 4323-4330, 2009 | 38 | 2009 |
| The impact of residential, commercial, and transport energy demand uncertainties in Asia on climate change mitigation T Koljonen, A Lehtilä Energy Economics 34, S410-S420, 2012 | 35 | 2012 |
| Results of the mapping T Koljonen Suomen geokemian atlas, osa 2, 106-125, 1992 | 35 | 1992 |
| TRANSFORMING THE EUROPEAN ENERGY SYSTEM: MEMBER STATES'PROSPECTS WITHIN THE EU FRAMEWORK B Knopf, B Bakken, S Carrara, A Kanudia, I Keppo, T Koljonen, S Mima, ... Climate Change Economics 4 (supp01), 1340005, 2013 | 31 | 2013 |
| Sustainability of forest energy in Northern Europe K Koponen, L Sokka, O Salminen, R Sievänen, K Pingoud, H Ilvesniemi, ... VTT Technology 237, 94, 2015 | 30 | 2015 |
| Future development trends in electricity demand G Koreneff, M Ruska, J Kiviluoma, J Shemeikka, B Lemström, R Alanen, ... VTT Tiedotteita–Research Notes 2470, 79, 2009 | 28 | 2009 |
| Nordic clean energy scenarios: Solutions for carbon neutrality M Wråke, K Karlsson, A Kofoed-Wiuff, T Folsland Bolkesjø, TJ Lindroos, ... Nordic Energy Research, 2021 | 27 | 2021 |
