The Nuclear Energy System Strategies Assessment Toolbox (NESSAT) is Nuclear-21’s unique set of modelling and simulation codes, databases, and infographics visualisation tools. NESSAT provides quantification of “what-if?”-analyses in our optioneering and decisioneering services by generating up-to-date infographics on the past, present and future performance of nuclear energy using best-practice, methodology-based nuclear energy scenario analyses and cost/risk analysis. NESSAT is also available for licensing. Explore the components of NESSAT and licencing options below.


  • NucInfo – Nuclear Energy Systems Information Database

    NucInfo is a comprehensive global database of nuclear energy system data, with an interactive data visualisation front-end to enable rapid data analysis and presentation. NucInfo is the primary source for all Nuclear-21’s data needs. It allows users to review the past, present and future of nuclear energy systems globally, country-by-country, and utility-by-utility.

  • DANESS – Technical-Economic Scenario Projection

    DANESS (Dynamic Analysis of Nuclear Energy System Strategies) is Nuclear-21’s primary technical-economic scenarios assessment tool. Starting from a reference year with a known nuclear energy system, DANESS projects the impacts of current and future policy, strategy, regulatory and other decisions and factors onto the development of nuclear energy systems. 

  • FCCM – Fuel Cycle Costing Model

    FCCM is a detailed nuclear fuel cycle costing model, providing stochastic Net Present Value evaluation of different fuel cycle options. It provides a detailed view on fuel cycle cost evolution over time, as a function of time-evolving material and service costs, as well as showing the impacts of both techno-economic and socio-political uncertainties.

  • NROM – Nuclear Real Options Model

    In a high-risk business environment, decision-making in the face of uncertainty becomes increasingly crucial. Such decision-making requires high performance financial cost/risk models to assess the value of different options over time, in order to optimise strategies and business development. NROM (Nuclear Real Options Model) assesses financial cost and risks in uncertain and risky market conditions.

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