). We have also considered wave energy potential in the Gulf of Riga. The conclusions have been drawn on the recommended methodology for the sea wave potential and power calculations for wave-power plant predesign stage.Keywords: Latvian EEZ, renewable energy, sea wave potential, wave energy, wave energy distribution of time wave energy directional distribution. INTRODUCTIONUp till now, sea waves are an untapped source of energy in Latvia. Wave energy is a renewable resource, which is increasingly used worldwide. Its volume can be estimated between 80,000TWh and 8,000TWh [1]. Several authors believe that wave energy could also become one of the most promising energy sources for electricity generation in our country [2], [3]. For wave energy to be captured and transformed, wave power stations are required. Technical solutions that determine whether they will be profitable are dependent on specific local conditions. To find them, an objective assessment of wave energy potential is required. The following factors are essential for this assessment:1. The potential amount of energy; 2. Wave expansion in different directions; 3. Wave energy variability over time.Unauthenticated Download Date | 5/11/18 7:17 AM

The article is devoted to the technical solution of alternative budget measuring equipment of the water surface gravity wave oscillation and the theoretical justification of the calculated oscillation power. This solution combines technologies such as lasers, WEB-camera image digital processing, interpolation of defined function at irregular intervals, volatility of discrete Fourier transformation for calculating the spectrum.

The article deals with free surface gravity waves as one of the alternative energy sources and their use. The potential of the waves and their transformation devices are considered as the main energy use impact factors. The goal of the research is to perform a cost-benefit assessment. The following tasks have been set: to make an assessment of wave potential, to identify the conversion model and turbine, to determine economic criteria taking into account wave and price variability. The article also provides the description of the theoretical valuation of the costs of the mentioned turbine power plant.

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