In Monaco, the sea is used as a renewable energy source for the development of a heat pump system. The ﬁrst heat pump with sea water in Monaco dates back to 1963.
In 2015, 70 heat pumps produced 17% of the energy consumed in the Principality (about 176 602 MWh/year).
Many buildings located on the coast benefit from this reversible system, for heating in winter and air conditioning in summer. These save the equivalent of 15,000 metric tons of oil per year.
The number of sea water heat pumps is expected to increase in the near future due to some ongoing projects.