The targets set by the European Union and the Finnish government on greenhouse emissions and carbon neutrality will revolutionize the entire energy system. The effects of dependence on imported energy were made concrete by Russia's invasion of Ukraine in February 2022, which was likely to accelerate the green transition, the move away from fossil fuels and the pursuit of national energy self-sufficiency. Halving the use of peat for energy and finding substitutes quickly became an issue. The parallel development of digitalization has been harnessed as one of the drivers of change for a sustainable modern energy system. Among the energy system structures, corporate value chains are one of the most important. Sustainability, responsibility and risk management are inseparable elements of each other and also a prerequisite for continuity management. The interconnections and interdependencies of the system's value chains across sectors need to be better taken into account to ensure longer-term sustainability. The green transition and the energy crisis are creating increasing pressure to develop the energy system as a whole, including increasing the share of renewable energy and using digitalization to bring intelligence to energy systems and enable new solutions for their control and management. The energy system consists of several sectors that need to work together more effectively and increase flexibility and storage in the production and consumption sectors to build a more sustainable energy system. A deep understanding of the sustainable energy system as a whole is needed to develop an intelligent energy system and to increase the interaction between sectors. A basic prerequisite for a smart energy system is that energy and related data move seamlessly between different actors, enabling data and energy management through automation, leading to a dynamic and cost-efficient use of energy. In an energy system based on digital solutions, advanced technology and the use of data collected from the value chain will allow, for example, the flexibility of energy supply and demand to optimize the value chain. In a modern energy system, it is important that electricity consumption adapts to fluctuations in weather-dependent electricity production, helping the electricity system to adapt to fluctuating production and ensure sufficient electricity for all. Industrial companies and large property owners play an important role in increasing flexibility, as they are major consumers of electricity. Energy system flexibility, optimization and the use of new technologies result in energy savings, reduced climate emissions and economic benefits for many stakeholders. A smart energy system is highly dependent on the functioning of digital systems. Small and medium-sized enterprises are increasingly involved in the energy system value chains in different roles and their competence and importance as service providers is growing. An energy system based on seamless interaction between SMEs and large companies is an essential part of the national critical infrastructure. Its value chains are vital for society and its functioning. The consequences of cyber impacts on energy systems for other critical infrastructure can be massive, due to the interconnectedness and interdependencies. This investment project is part of a package of projects, the second part of which is a parallel development project. The purpose of the package of projects is to - increase and improve the use of data in energy supply value chains to optimize energy production, distribution and consumption in order to save energy, reduce CO2 emissions and improve security of supply, and - increase the resilience of energy supply value chains and their components, their ability to identify vulnerabilities in their operations, processes and systems, their ability to detect and counter cyber threats and to create conditions for the development of human resources skills. The package of projects will design, implement and pilot a digital platform, isolated from public networks, modelling the entire value chain of a sustainable energy system, combining both data exploitation and cybersecurity aspects, with the capability to simulate, optimize and cause cyber disruptions in the energy system. The platform to be built can be used in the future to support the development of both the energy system itself and related business models and potential and skills among value chain actors. The package of projects will achieve the following operational objectives: Objective 1: A digital/virtual and technical platform modelling the entire energy supply value chain is built and deployed. Objective 2: The systematic use of data in the energy supply value chain will enable energy savings and CO2 emission reductions, as well as rapid control in changing circumstances. Objective 3: Cybersecurity exercises and related skills in the energy supply value chain have been developed and tested in a pilo