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Planning & Economic Studies Section (PESS):
Capacity Building for Sustainable Energy Development

Capacity Building: PESS Energy Models

MAED: Model for Analysis of Energy Demand


MAED evaluates future energy demands based on medium- to long-term scenarios of socioeconomic, technological and demographic development. Energy demand is disaggregated into a large number of end-use categories corresponding to different goods and services. The influences of social, economic and technological driving factors from a given scenario are estimated. These are combined for an overall picture of future energy demand growth.

The Computer Manual on Model for Analysis of Energy Demand (MAED-2) has been translated for French and Spanish speaking countries and published as English, French and Spanish Version.

WASP: Wien Automatic System Planning Package

IAEA Tools Brochure

WASP is the most widely used model in developing countries for power system planning (over 100 countries). Within constraints defined by the user, WASP determines the optimal long-term expansion plan for a power generating system. Constraints may include limited fuel availability, emission restrictions, system reliability requirements and other factors. Optimal expansion is determined by minimizing discounted total costs.

FINPLAN: Model for Financial Analysis of Electric Sector Expansion Plans

In developing countries, financial constraints are often the most important obstacle to implementing optimal electricity expansion plans. FINPLAN helps assess the financial viability of plans and projects. It takes into account different financial sources - including export credits, commercial loans, bonds, equity and modern instruments like swaps - and calculates projected cash flows, balance sheet, financial ratios and other financial indicators.

Model for Energy Supply Strategy Alternatives and their General Environmental Impacts

NES NG-T-5.2 publication

MESSAGE combines technologies and fuels to construct so-called "energy chains", making it possible to map energy flows from supply (resource extraction) to demand (energy services). The model can help design long term strategies by analysing cost optimal energy mixes, investment needs and other costs for new infrastructure, energy supply security, energy resource utilization, rate of introduction of new technologies (technology learning), environmental constraints, etc.

SIMPACTS: Simplified Approach for Estimating Impacts of Electricity Generation

SIMPACTS is a user-friendly, simplified approach for estimating the environmental impacts and external costs of different electricity generation chains. Designed for use in developing countries, it requires much less data, but produces comparable results, relative to more sophisticated data-hungry models. The SIMPACTS package covers:

  • health, agricultural, forest and materials damage,
  • airborne and water pollution as well as solid waste, and,
  • different generating technologies.