The invention relates to a facility making it possible to maximize the overall power output, the facility including at least one absorption group (7), for producing ice water, and a heat pump (10). The particular feature of the facility is that the inlet of the heat pump power supply system is connected to the outlet of the exhaust system (9) of the absorption group (7) so as to transfer at least part of the low-temperature thermal power from the exhaust system (9) to the hot water production system (12). Such a facility also makes it possible to generate sanitary ice water and hot water and desalinate sea water.