2026

• Schäffer, Linn Emelie; Bakken, Tor Haakon; Helseth, Arild; Korpås, Magnus. (2026) Optimal operation of hydropower systems with environmental constraints on reservoir management. Renewable Energy
  Academic article

2025

• Rex, Stefan; Helseth, Arild; Mo, Birger. (2025) Energy security and adequacy from hydropower. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
  Report
• Bergset, Amund Skretting; Helseth, Arild; Mo, Birger. (2025) On the Impact of Demand Response in the Nordic Power System.
  Academic chapter/article/Conference paper
• Aubin, Viviane; Helseth, Arild; Korpås, Magnus; Fleten, Stein-Erik. (2025) Whose heads are we keeping above water? Impacts of risk aversion on hydropower medium-term scheduling. Energy
  Academic article
• Aubin, Viviane; Helseth, Arild; Korpås, Magnus. (2025) Do we have to choose between the ecosystems and the energy transition? Environmental trade-offs with operation of Norwegian hydropower. Renewable Energy
  Academic article
• Helseth, Arild. (2025) The ReSDDP Model - Principles and Algorithm. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild; Bergset, Amund Skretting. (2025) Demand Response in Power Market Models. SINTEF Energi AS SINTEF Energi AS
  Report

2024

• Helseth, Arild. (2024) Approximating hydropower systems by feasibility spaces in stochastic dual dynamic programming. Electric power systems research
  Academic article
• Helseth, Arild; Fleten, Stein-Erik. (2024) Editorial: special issue on “Hydropower Scheduling”. Energy Systems
  Editorial
• Helseth, Arild. (2024) Snow Storage Information in Hydropower Scheduling. NTNU/SINTEF NTNU/SINTEF
  Report

2023

• Helseth, Arild; Melo, Albert C.G.; Ploussard, Quentin; Mo, Birger; Maceira, Maria E.P.; Botterud, Audun. (2023) Hydropower Scheduling Toolchains: Comparing Experiences in Brazil, Norway, and USA and Implications for Synergistic Research. Journal of water resources planning and management
  Academic article
• Helseth, Arild; Rex, Stefan. (2023) Ramping Constraints in Hydropower Scheduling. NTNU/SINTEF NTNU/SINTEF
  Report
• Mo, Birger; Helseth, Arild; Rex, Stefan. (2023) Modelling uncertainty in gas and CO2 prices – consequences for electricity price.
  Academic chapter/article/Conference paper
• Helseth, Arild; Rex, Stefan; Mo, Birger. (2023) Approximating Ramping Constraints in Hydropower Scheduling.
  Academic chapter/article/Conference paper

2022

• Hågenvik, Hans Olaf; Mathisen, Siri Gulaker; Helseth, Arild; Mo, Birger. (2022) A Comprehensive Simulator for Hydropower Investment Decisions.
  Academic chapter/article/Conference paper
• Helseth, Arild; Mo, Birger; Hågenvik, Hans Olaf; Schäffer, Linn Emelie. (2022) Hydropower Scheduling with State-Dependent Discharge Constraints: An SDDP Approach. Journal of water resources planning and management
  Academic article
• Yousefi, Mojtaba; Cheng, Xiaomei; Gazzea, Michele; Wierling, August Hubert; Rajasekharan, Jayaprakash; Helseth, Arild. (2022) Day-ahead inflow forecasting using causal empirical decomposition. Journal of Hydrology
  Academic article
• Helseth, Arild. (2022) Relaxation Techniques and Temporal Decomposition of Scenarios in Fundamental Power Market Models. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild. (2022) Spatial Benders decomposition for hydrothermal scheduling – Application to the Fansi market model. SINTEF Energi AS SINTEF Energi AS
  Report
• Schäffer, Linn Emelie; Korpås, Magnus; Helseth, Arild. (2022) Optimal Operation of Hydro-Dominated Power Systems with Environmental Constraints.
  Academic chapter/article/Conference paper
• Mathisen, Siri Gulaker; Mo, Birger; Helseth, Arild; Bladh, Johan; Funkquist, Jonas. (2022) Measuring the Impact of Environmental Constraints on Hydropower Flexibility.
  Academic chapter/article/Conference paper
• Naversen, Christian Øyn; Parvania, Masood; Helseth, Arild; Farahmand, Hossein. (2022) Continuous Hydrothermal Flexibility Coordination under Wind Power Uncertainty. IEEE Transactions on Sustainable Energy
  Academic article
• Schäffer, Linn Emelie; Helseth, Arild; Korpås, Magnus. (2022) A stochastic dynamic programming model for hydropower scheduling with state-dependent maximum discharge constraints. Renewable Energy
  Academic article
• Helseth, Arild; Mo, Birger. (2022) Hydropower Aggregation by Spatial Decomposition – an SDDP Approach. IEEE Transactions on Sustainable Energy
  Academic article

2021

• Helseth, Arild; Jaehnert, Stefan; Diniz, Andre Luiz. (2021) Convex Relaxations of the Short-Term Hydrothermal Scheduling Problem. IEEE Transactions on Power Systems
  Academic article
• Haugen, Mari; Helseth, Arild. (2021) Primod – A fundamental short-term model for power system analyses and multimarket price forecasting. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild; Haugen, Mari; Farahmand, Hossein; Mo, Birger; Jaehnert, Stefan; Stenkløv, Inge. (2021) Assessing the benefits of exchanging spinning reserve capacity within the hydro-Dominated nordic market. Electric power systems research
  Academic article

2020

• Naversen, Christian Øyn; Helseth, Arild; Li, Bosong; Parvania, Masood; Farahmand, Hossein; Catalao, João P.S.. (2020) Hydrothermal scheduling in the continuous-time framework. Electric power systems research
  Academic article
• Helseth, Arild; Sveen, Eivind Bekken. (2020) Combining Machine Learning and Optimization for Efficient Price Forecasting.
  Academic chapter/article/Conference paper
• Haugen, Mari; Schaffer, Linn Emelie; Mo, Birger; Helseth, Arild. (2020) Impact on hydropower plant income from participating in reserve capacity markets.
  Academic chapter/article/Conference paper
• Schaffer, Linn Emelie; Bustos, Ana Adeva; Bakken, Tor Haakon; Helseth, Arild; Korpås, Magnus. (2020) Modelling of Environmental Constraints for Hydropower Optimization Problems – a Review.
  Academic chapter/article/Conference paper
• Øvstebø, Mari Lund; Naversen, Christian Øyn; Helseth, Arild; Farahmand, Hossein. (2020) Continuous-time scheduling of a hydrothermal system with integration of offshore wind power.
  Academic chapter/article/Conference paper
• Naversen, Christian Øyn; Farahmand, Hossein; Helseth, Arild. (2020) Accounting for reserve capacity activation when scheduling a hydropower dominated system. International Journal of Electrical Power & Energy Systems
  Academic article
• Haugen, Mari; Helseth, Arild; Jaehnert, Stefan; Mo, Birger; Farahmand, Hossein; Naversen, Christian Øyn. (2020) On the Importance of Detailed Thermal Modeling for Price Forecasting in Hydro-Thermal Power Systems.
  Academic chapter/article/Conference paper
• Helseth, Arild; Melo, Albert Corderio Geber de. (2020) Scheduling Toolchains in Hydro-Dominated Systems : evolution, Current Status and Future Challenges for Norway and Brazil. SINTEF Energi AS SINTEF Energi AS
  Report
• Perez-Diaz, Juan I.; Guisández, Ignacio; Chazarra, Manuel; Helseth, Arild. (2020) Medium-term scheduling of a hydropower plant participating as a price-maker in the automatic frequency restoration reserve market. Electric power systems research
  Academic article
• Helseth, Arild; Mo, Birger; Hågenvik, Hans Olaf. (2020) Nonconvex Environmental Constraints in Hydropower Scheduling.
  Academic chapter/article/Conference paper

2019

• Naversen, Christian Øyn; Bjarghov, Sigurd; Helseth, Arild. (2019) Operating a Battery in a Hydropower-Dominated System to Balance Net Load Deviations.
  Academic chapter/article/Conference paper
• Helseth, Arild. (2019) Proceedings of the 6th International Workshop on Hydro Scheduling in Competitive Electricity Markets. Springer Nature Springer Nature
  Academic anthology/Conference proceedings
• Chazarra, Manuel; Pérez-Díaz, Juan I.; García-González, Javier; Helseth, Arild. (2019) Economic effects of forecasting inaccuracies in the automatic frequency restoration service for the day-ahead energy and reserve scheduling of pumped storage plants. Electric power systems research
  Academic article
• Hjelmeland, Martin N.; Helseth, Arild; Korpås, Magnus. (2019) Medium-Term hydropower scheduling with variable head under inflow, energy and reserve capacity price uncertainty. Energies
  Academic article
• Jaehnert, Stefan; Helseth, Arild; Naversen, Christian Øyn. (2019) Fundamental Multi-Product Price Forecasting in Power Markets. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild. (2019) Environmental Constraints in Seasonal Hydropower Scheduling. NTNU NTNU
  Report
• López-Salgado, Carlos Josué; Helseth, Arild; Añó, Osvaldo; Ojeda-Esteybar, Diego M.. (2019) Stochastic daily hydrothermal scheduling based on decomposition and parallelization. International Journal of Electrical Power & Energy Systems
  Academic article

2018

• Mo, Birger; Helseth, Arild; Warland, Geir. (2018) Modeling and Quantifying the Importance of Snow Storage Information for the Nordic Power System.
  Academic chapter/article/Conference paper
• Helseth, Arild; Mo, Birger; Henden, Arild Lothe; Warland, Geir. (2018) Detailed long-term hydro-thermal scheduling for expansion planning in the Nordic power system. IET Generation, Transmission & Distribution
  Academic article
• Sperstad, Iver Bakken; Wolfgang, Ove; Helseth, Arild; Reigstad, Tor Inge; Kjølle, Gerd Hovin. (2018) Probabilistic socio-economic cost assessment integrating power market and reliability analysis.
  Academic chapter/article/Conference paper
• Helseth, Arild; Fodstad, Marte; Mo, Birger. (2018) Optimal Hydropower Maintenance Scheduling in Liberalized Markets. IEEE Transactions on Power Systems
  Academic article
• Hjelmeland, Martin N.; Zou, Jikai; Helseth, Arild; Ahmed, Shabbir. (2018) Nonconvex medium-term hydropower scheduling by stochastic dual dynamic integer programming. IEEE Transactions on Sustainable Energy
  Academic article
• Hjelmeland, Martin N.; Helseth, Arild; Korpås, Magnus. (2018) Impact of modelling details on the generation function for a Norwegian hydropower producer. Journal of Physics: Conference Series (JPCS)
  Academic article
• Helseth, Arild; Haugen, Mari; Jaehnert, Stefan; Mo, Birger; Farahmand, Hossein; Naversen, Christian Øyn. (2018) Multi-Market Price Forecasting in Hydro-Thermal Power Systems.
  Academic chapter/article/Conference paper

2017

• Helseth, Arild. (2017) Treating nonconvex PQ-curves in ProdRisk final simulation. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild; Mo, Birger; Henden, Arild Lothe; Warland, Geir. (2017) SOVN Model Implementation : method, functionality and details. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild; Mo, Birger; Fodstad, Marte. (2017) Water values in future power markets.
  Academic chapter/article/Conference paper
• Chazarra, Manuel; Perez-Diaz, Juan I.; Garcia-Gonzalez, Javier; Helseth, Arild. (2017) Economic impact of forecasting errors in residual reserve curves in the day-ahead scheduling of pumped storage plants.
  Academic chapter/article/Conference paper
• Helseth, Arild; Fodstad, Marte; Askeland, Magnus; Mo, Birger; Nilsen, Odd Bjarte; Perez-Diaz, Juan I.. (2017) Assessing hydropower operational profitability considering energy and reserve markets. IET Renewable Power Generation
  Academic article
• Helseth, Arild; Henden, Arild Lothe. (2017) Start-up costs in ProdRisk : Mathematical formulation and user's guide. SINTEF Energi AS SINTEF Energi AS
  Report

2016

• Helseth, Arild; Fodstad, Marte; Henden, Arild Lothe. (2016) Balancing Markets and their Impact on Hydropower Scheduling. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild; Fodstad, Marte; Mo, Birger. (2016) Optimal medium-term hydropower scheduling considering energy and reserve capacity markets. IEEE Transactions on Sustainable Energy
  Academic article
• Helseth, Arild. (2016) Stochastic network constrained hydro-thermal scheduling using a linearized progressive hedging algorithm. Energy Systems, Springer Verlag
  Academic article
• Hjelmeland, Martin N.; Larsen, Camilla Thorrud; Korpås, Magnus; Helseth, Arild. (2016) Provision of rotating reserves from wind power in a hydro-dominated power system.
  Academic chapter/article/Conference paper
• Sperstad, Iver Bakken; Helseth, Arild; Korpås, Magnus. (2016) Valuation of stored energy in dynamic optimal power flow of distribution systems with energy storage.
  Academic chapter/article/Conference paper
• Helseth, Arild; Mo, Birger; Fodstad, Marte. (2016) Hydropower Scheduling Considering Energy and Reserve Capacity Markets : Using a combined SDP/SDDP algorithm. SINTEF Energi AS SINTEF Energi AS
  Report
• Chazarra, Manuel; Perez-Diaz, Juan I.; Garcia-Gonzàles, Javier; Helseth, Arild. (2016) Modeling the Real-Time use of Reserves in the Joint Energy and Reserve Hourly Scheduling of a Pumped Storage Plant. Energy Procedia
  Academic article
• Helseth, Arild. (2016) Editorial. Energy Procedia
  Editorial
• Henden, Arild Lote; Doorman, Gerard; Helseth, Arild. (2016) Economic Analysis of Large-Scale Pumped Storage Plants in Norway. Energy Procedia
  Academic article
• Hjelmeland, Martin N.; Helseth, Arild; Korpås, Magnus. (2016) A Case Study on Medium-Term Hydropower Scheduling with Sales of Capacity. Energy Procedia
  Academic article
• Fodstad, Marte; Helseth, Arild; Henden, Arild Lothe. (2016) Modeling start/stop in short-term multi-market hydropower scheduling.
  Academic chapter/article/Conference paper
• Mo, Birger; Henden, Arild Lothe; Helseth, Arild. (2016) Hydro-thermal market model based on price decoupling and local supply/demand curves.
  Academic chapter/article/Conference paper
• Hjelmeland, Martin N.; Korpås, Magnus; Helseth, Arild. (2016) Combined SDDP and simulator model for hydropower scheduling with sales of capacity.
  Academic chapter/article/Conference paper

2015

• Gebrekiros, Yonas Tesfay; Doorman, Gerard L.; Preda, Traian Nicolae; Helseth, Arild. (2015) Assessment of PTDF Based Power System Aggregation Schemes.
  Academic chapter/article/Conference paper
• Fodstad, Marte; Henden, Arild Lothe; Helseth, Arild. (2015) Hydropower Scheduling in Day-ahead and Balancing Markets.
  Academic chapter/article/Conference paper
• Helseth, Arild; Braaten, Hallvard. (2015) Efficient parallelization of the stochastic dual dynamic programming algorithm applied to hydropower scheduling. Energies
  Academic article
• Gjerden, Knut Skogstrand; Helseth, Arild; Mo, Birger; Warland, Geir. (2015) Hydrothermal scheduling in Norway using stochastic dual dynamic programming; a large-scale case study.
  Academic chapter/article/Conference paper
• Helseth, Arild; Mo, Birger; Fodstad, Marte; Hjelmeland, Martin Nødland. (2015) Co-optimizing sales of energy and capacity in a hydropower scheduling model.
  Academic chapter/article/Conference paper

2014

• Helseth, Arild; Mo, Birger; Gjerden, Knut Skogstrand; Wolfgang, Ove. (2014) Stochastic optimization model with individual water values and power flow constaints. SINTEF Energi AS SINTEF Energi AS
  Report

2013

• Helseth, Arild; Gjelsvik, Anders; Mo, Birger; Linnet, Úlfar. (2013) A model for optimal scheduling of hydro thermal systems including pumped-storage and wind power. IET Generation, Transmission & Distribution
  Academic article
• Helseth, Arild; Warland, Geir; Mo, Birger. (2013) A hydrothermal market model for simulation of area prices including detailed network analyses. European transactions on electrical power
  Academic article

2012

• Helseth, Arild; Warland, Geir; Mo, Birger; Fosso, Olav B. (2012) Samnett – The EMPS Model with Power Flow ConstraintsImplementation details. SINTEF Energi AS SINTEF Energi AS
  Report
• Helseth, Arild. (2012) A linear optimal power flow model considering nodal distribution of losses.
  Academic chapter/article/Conference paper
• Mo, Birger; Helseth, Arild; Warland, Geir; Fosso, Olav B; Gjelsvik, Anders. (2012) Power System Analysis and Transmission Planning in a Changing Environment. SINTEF Energi SINTEF Energi
  Report
• Helseth, Arild; Gjelsvik, Anders; Mo, Birger; Warland, Geir. (2012) Prodnett – A Market Model Based on SDDP Including Power Flow Constraints. SINTEF Energi SINTEF Energi
  Report
• Helseth, Arild; Mo, Birger. (2012) Overgang til flytbasert markedsklarering?. Energi
  Article in business/trade/industry journal

2011

• Warland, Geir; Mo, Birger; Helseth, Arild. (2011) Handling balancing power in a power market with a large share of hydropower.
  Academic chapter/article/Conference paper

2010

• Helseth, Arild; Mo, Birger; Warland, Geir. (2010) Long-term scheduling of hydro-thermal power systems using scenario fans. Energy Systems, Springer Verlag
  Academic article
• Helseth, Arild; Warland, Geir; Mo, Birger. (2010) Long-term hydro-thermal scheduling including network constraints.
  Academic chapter/article/Conference paper

2009

• Helseth, Arild; Holen, Arne Torstein. (2009) Structural vulnerability of energy distribution systems: Incorporating infrastructural dependencies. International Journal of Electrical Power & Energy Systems
  Academic article

2008

• Helseth, Arild; Holen, Arne Torstein. (2008) Structural Vulnerability of Energy Distribution Systems; Incorporating Infrastructural Dependencies.
  Academic chapter/article/Conference paper
• Helseth, Arild; Holen, Arne Torstein. (2008) Impact of Energy End Use and Customer Interruption Cost on Optimal Allocation of Switchgear in Constrained Distribution Networks. IEEE Transactions on Power Delivery
  Academic article
• Helseth, Arild. (2008) Modelling Reliability of Supply and Infrastructural Dependency in Energy Distribution Systems. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2008:87)
  Doctoral dissertation
• Holen, Arne Torstein; Helseth, Arild. (2008) Sårbarhet ved parallelle nett. Mørkt og kaldt samtidig?. Elektro
  Popular scientific article

2007

• Helseth, Arild; Koeppel, Gaudenz. (2007) Storage Potential in Pipelines and its Impact on Reliability of Supply.
  Academic chapter/article/Conference paper

2006

• Helseth, Arild; Holen, Arne Torstein. (2006) Reliability Modeling of Gas and Electric Power Distribution Systems; Similarities and Differences.
  Academic chapter/article/Conference paper
• Helseth, Arild; Holen, Arne Torstein. (2006) Impact of Energy End-use on Optimal Allocation of Switchgear in Radial Distribution Networks.
  Academic chapter/article/Conference paper

2005

• Holen, Arne Torstein; Helseth, Arild; Botterud, Audun; Jordanger, Einar; Bakken, Bjørn Harald. (2005) Energy distribution system planning: Methodologies and tools for multi-criteria decision analysis.
  Academic chapter/article/Conference paper