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A hybrid solar installation on a city-center apartment building– Marseille (FR)
In the heart of Marseille, DualSun realized one if its first hybrid solar installations in 2013 on an apartment building of 73 apartments. The 22 DualSun panels are coupled with 2 HELIOPAC water-water heat pumps to provide domestic hot water for the building. This solar/heat pump combination (heliopacsystem+®) allows the solar circuit to function even at low temperature for an optimal efficiency with high solar coverage, even in the winter months!
Learn more about heliopacsystem+®.
The energy performance of the installation is closely monitored and we observe that in summer months, solar covers 79% of hot water needs of the building, and in the winter 68%!
The electricity produced by the panels is entirely self-consumed within the building. The efficiency of this installation cuts the non-renewable hot water energy consumption by 4! The results exceeded our expectations.
See the monitoring slides of this installation.
Technical Information
| Characteristics | Building with 73 apartments |
| Application | Domestic hot water |
| Number of solar panels | 21 DualSun hybrid solar panels + 1 photovoltaic panel (used to compare PV production of hybrid and PV panels next to each other) ; 75m2 heliopacsystem (Solerpool) solar collectors |
| Power output | 5.5kWp + 7.85kWth |
| Roof installation | Flat roof, south facing, 30° tilt |
| Thermal system | 2 Solerpac® 134aSE-12 heat pumps, 4 1000L hot water tanks, gas boiler as booster |
| Photovoltaic system | SolarEdge optimisers, self-consumption of electricity in building |
| Installation date | Before 2015 |
