NEMO: the Next Energy Modeling system for Optimization

NEMO is designed to analyze critical questions in contemporary energy policy – including the grid integration of variable renewable energy, the role of energy storage, and robust planning responses to climate change. It is a full energy system optimization tool that can be run from a command line or with SEI’s Low Emissions Analysis Platform (LEAP) as the user interface. The combination of LEAP and NEMO puts powerful optimization features within reach of planners, energy analysts, and others who are not full-time modelers. NEMO is used for capacity expansion and power development planning, energy strategies, energy-water-food nexus analyses, and deep decarbonization studies.

Key features of NEMO include:

• Least-cost optimization of energy supply and demand
• Support for multiple regions and regional trade
• Modeling of energy storage
• Nodal network simulations and modeling of power and pipeline flow
• Modeling of emissions and emission constraints
• Modeling of renewable energy targets
• Parallel processing
• Support for multiple solvers, both open-source and commercial
• Numerous performance tuning options
• Data stored in an open-source relational database, allowing easy access to inputs and results

NEMO’s source code and documentation are available on the NEMO website. The tool is available free of charge for use in command line mode.  To use NEMO with LEAP, a separate LEAP license is required, which can be requested on the LEAP website. SEI provides free LEAP licenses to qualified academic, governmental and nonprofit organizations based in low- and lower-middle-income countries, as well as to students worldwide. LEAP is also available substantially discounted to such users in upper-middle-income countries. A standard license fee is charged to other users, including consulting companies and utilities.