Nuclear Desalination

Desalination Economic Evaluation Program (DEEP)


The Desalination Economic Evaluation Program DEEP is a tool made freely available by the International Atomic Energy Agency, which can be used for performance and cost evaluation of various power and water co-generation configurations. The new version, DEEP 4.0, adds a new user interface emphasizing its user friendliness for both newcomers and experts.

The highlights of DEEP 4.0 are:

  • Development of an intuitive graphical user interface containing all the basic reference coupling schemes in a single unified template. This template includes beginner and expert mode, error checking and helpful messages that assist the user in tracing the logical errors produced by the input of erroneous values.

  • 'On-the-fly' comparison of different technologies and configurations without having to rerun the programme

  • Versatile sensitivity analysis to show the impact between important parameters and results

The new version of DEEP is suitable for analysis among different plant types (steam, gas, combined cycle and heat only plants), different fuels (nuclear, oil, coal) and various desalination options including Multi-Effect Distillation (MED), Multi-Stage Flash (MSF), Reverse Osmosis (RO) and hybrid options. It also includes formulation of different alternatives such as different turbines configurations, backup heat, intermediate loop, water transport costs and carbon tax.

Download DEEP software

User's Manual

Desalination Thermodynamic Optimization Program (DE-TOP)


DE-TOP (2.0b Beta) has been developed by the International Atomic Energy Agency as a tool for the thermodynamic analysis and optimization of nuclear cogeneration systems, such as nuclear desalination. DE-TOP models the water steam cycle (Rankine cycle) cycle of different water cooled reactors or fossil plants, and the connection between any non-electrical application.

With an intuitive graphical user interface and flexible system configuration, the user is able to select different coupling arrangements between power plant and non-electric application (single steam extraction, multiple steam extraction, backpressure operation, etc.).

DE-TOP executes energy and exergy analysis of the cogeneration system and produces detailed reports for plant performance at different cogeneration modes.

The main features of DE-TOP 2.0b are:

  • Detailed base-load calculation of mass and energy flows in the power plant secondary cycle

  • Robust model of water/steam thermodynamic properties (T, P, enthalpy, exergy, etc.) based on the IAPWS-IF97 industrial formulation

  • Fully customizable parameters for water cooled reactors and Fossil steam power plants to fit any user defined case. As well as several predefined cases (PWR, BWR, SMRs, etc.)

  • Simulation operation with of non-electric applications as: Desalination, District Heating or process heat

  • DE-TOP has a friendly user interface that simplify its use and allows a better understanding of the system

  • Report and analysis of plant performance in single electricity production and cogeneration modes

As DE-TOP is still under continuous development, the current available version is released as a beta-version.

Download DE-TOP software

User's Manual

IAEA Toolkit on nuclear desalination

IAEA Toolkit on Nuclear Desalination

For various information on the Agency's activities on seawater desalination using nuclear power, you can download the IAEA Toolkit on nuclear desalination