Since 1993, the International Energy Agency (IEA) has provided medium to long-term energy projections using the World Energy Model (WEM). The model is a large-scale simulation model designed to replicate how energy markets function and is the principal tool used to generate detailed sector-by-sector and region-by-region projections for the World Energy Outlook (WEO) scenarios. Developed over many years, the model broadly consists of three main sections covering:
Outputs from the model include energy flows by fuel, investment needs and costs, CO2 emissions and end-user pricing and is calculated for each of the 25 regions modelled in the WEM. An extensive effort is undertaken each year to incorporate energy and climate-related policies and measures into our modelling and analysis with details and sources provided under Policy Databases.
A detailed description of the World Energy Model and supporting documents covering topics such as energy efficiency, energy subsidies, climate change analysis and power sector analysis may be found in the WEM Methodology. The investment costs section outlines input assumptions to the WEM for the power generation sector and for end-use energy efficiency.
New Features in World Energy Outlook 2015
The WEO-2015 uses a scenario approach to examine future energy trends. It presents three scenarios: the New Policies Scenario, the Current Policies Scenario and the 450 Scenario. Comprehensive historical data through to 2013 are presented and used in the modelling, although wherever possible preliminary 2014 data are also included. Some of the changes made to the WEM for the purposes of the WEO-2015 are highlighted below:
Full details may be found in the WEM Methodology