Linear optimization tool for operations planning


Fortum is a leading clean-energy company, focused on the development of solutions related to power, heat and cooling generation and distribution. Fortum also provides services for the power generation industry and solutions for consumers so that they can be smarter in their energy choices.

Fortum needed a tool for developing linear models for district heating systems optimization in order to quickly scale up our operations. We think that Semantum did a really good job. MONA is a comprehensive tool that it is easy to use. It has greatly supported our business development. We appreciate Semantum’s attention to detail and good collaboration for delivering an excellent product for our use.

Tommy Ström - Manager

System Optimization & Production Planning

City Solutions, Fortum Power and Heat Oy

With a fleet of dozens of power plants across ten countries, operation and production optimization of power and heat production is critical for Fortum. Efficient operation planning becomes more challenging considering the ever-changing weather conditions and the constant fluctuations in power price and fuel costs.

In order to help overcoming this challenge, Semantum together with Fortum have developed MONA, a mixed integer linear programming modeling tool for optimization of operations. MONA enables rapid and efficient modeling for performing time-dependent linear optimization based on GAMS system. In MONA, optimization of the operation can be carried out considering various data sources such as power price, weather forecasts, expected fuel costs, efficiency of different plants and other consumption parameters.


Rapid and efficient modeling enabled by graphical intuitive user interfaces and collaborative modeling features

MONA user interface is based on Simantics platform. In MONA, modeling for linear optimization is carried utilizing user-friendly graphical interfaces that reduce modeling effort to dragging, dropping, connecting and configuring model components. This is particularly useful, as MONA users do not necessarily require thorough knowledge of the underlying model equations.

User-defined model components can be created and then added to the MONA standard components library for hierarchically composing system models in a fast manner. In addition to speeding up the modeling process, this approach also increases the understanding and correctness of the models created.


Faster model development is also achieved by collaborative features, enabled by MONA Team Server. MONA includes team features capabilities such as version management as well as change tracking and reporting. MONA team features allow efficient collaboration between modeling and optimization teams.

At Fortum, MONA is used across the System Optimization team members to develop and maintain their linear optimization models. MONA also serves as a back-up system for optimization and it is in active use in other parts of the organization.

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