In term of production of electricity Latvia has the highest level of renewable source use among the ten new EU Member States. In February 2006 prime ministers of three Baltic States are agreed to build a new nuclear station in Lithuania, instead of Ignalina station witch should go to closure in 2009. It may take about 15 years until the new one can be ready to produce electricity. Taking into account the forecasted deficit in electricity generating capacities in the Baltic States after 2015 it would be necessary to secure a reliable energy supply. This target could be obtained by more active involving renewable energy sources such as biomass, wind, solar energy. Latvia’s energy supply now is based on a balance mixture of energy sources, in which renewable sources represent 34% of the primary energy share. Most of it is due to the hydro energy utilization. However hydropower plants give the high fluctuation of the Daugava river basin, and it is impossible to forecast hydroelectricity generation and to base the energy policy on this resource only. Recently developed new governmental Energy Program tries to propose clear position for future increase of renewable energy sources.