The synergy between aerothermal and photovoltaic solar energy
The aerothermal heat pump needs between 1,500 and 5,000 kWh of electricity per year. Photovoltaic solar panels produce electricity during daylight hours. The key is that a significant part of the heat pump's consumption occurs during daylight hours.
| System | Annual electricity cost (150 m² home) | Estimated self-sufficiency |
|---|---|---|
| Aerothermal alone (flat rate) | €700 – €900/year | 0% |
| Aerothermal + 4 kWp solar | €420 – €540/year | ~40% |
| Aerothermal + 6 kWp solar | €280 – €360/year | ~60% |
| Aerothermal + 8 kWp solar + 10 kWh battery | €140 – €200/year | ~80% |
Official Installers in Alt Empordà
How to size the dual aerothermal + solar system
- Calculate aerothermal electricity demand: SCOP and annual thermal requirement.
- Size the photovoltaic installation: to cover 40–60% of the pump's consumption during daylight hours.
- Evaluate the storage battery: optimal if the usage profile is mainly nocturnal.
- Programme energy management: many heat pumps (Daikin, Panasonic) accept a "photovoltaic surplus" signal.
Frequently asked questions
Does Enclos Instal install both aerothermal and solar panels?
Yes. Enclos Instal is an official aerothermal installer (Daikin, Panasonic, Vaillant, De Dietrich) and carries out complete photovoltaic installations.