In order to develop different energy and fuel production and consumption scenarios and comparisons in Latvia, sufficiently detailed data characterising energy supply system need to be collected and analysed. Since there are large regional differences in Latvia regarding energy and fuel consumption and structure, the data need to be region-specific. Summarised national fuel and energy balance does not give sufficiently representative overview. Thus information were collected and used as baseline data for modelling with MESAP model. The results of modelling process were practised for strategic analysis of energy problems in Latvia. Besides planning departments of ministries, consulting companies, developmental agencies, research institutions and energy enterprises can use it.