J. Rúnar Magnússon is a mechanical engineer with over 30 years’ experience in geothermal utilization. He has experience in modelling and conducting feasibility studies of geothermal power plants, of detailed designing of gathering pipes, steam applications, buster and re-injection pump stations. He also has gained extensive experience in power generation from high and low enthalpy geothermal fields and in binary (ORC) power plant design. Design and operation of SPA and swimming pool systems are part of his experience, which he has gained working on nature pool systems connected to direct use utilization, all the way up to large-scale SPA systems cascading with flash power plants. J. Rúnar Magnússon also has vast knowledge and experience in the design of large-scale freezing systems.