Abstract
The experience of the thermal spa lake "Blue Lagoon" in Iceland was reported. The plenty of geothermal seawater was supplied from the Svartsengi geothermal power plant to the Blue Lagoon. It was utilized not only as the spa for the public but also for the treatment of psoriasis at the annex clinic. The well-organized project supplying electric power to the community and hot water for the heating system of the public and home use was supposed to be the advanced model to answer to the increasing demand for carbon offset with ecological purposes.
