World energy resources are based on fossil fuels mostly (coal, oil, gas) which don’t regenerate and will be run low after 30-80 years. The forecasts from Olduvai theory shows that our Industrial Civilization will be last on the Earth. Accordingly estimations from that theory on 2025 we will be equal with 1930, when there were fossil resources and no technologies, but on 2025 we will have technologies and no fossil resources. Therefore it is necessary to search for an alternative energy sources today. Also Latvia’s energy balance is based mostly on the burning of fossil fuels and importing it from neighbour countries.