![](https://carboquant.empa.ch/documents/146981/355614/ElectricHome_icon.jpg/7abafd6e-0565-4fcd-b7a6-db456efaf8b8?t=1448890079000)
ELECTRIC
![](https://carboquant.empa.ch/documents/146981/355614/SolarPanel_icon.jpg/001d727c-0dec-438f-a052-70239d5f8926?t=1448882493000)
SOLAR PANELS
![](https://carboquant.empa.ch/documents/146981/355614/Battery_icon.jpg/f251da6a-f66c-480a-8585-73273b155ebe?t=1448882490000)
BATTERY
![](https://carboquant.empa.ch/documents/146981/355614/Electrolysis_icon.jpg/d1e15850-0379-47e6-b834-0dcf6fb8507b?t=1448882491000)
ELEKTROLYSIS
![](https://carboquant.empa.ch/documents/146981/355614/FuelCell_icon.jpg/eea748fe-4ba7-4e5f-8962-d2424f6de967?t=1448882492000)
FUEL CELL
![](https://carboquant.empa.ch/documents/146981/355614/HeatPump_icon.jpg/0c9e8164-35af-4ff8-8b1f-001687611579?t=1448882492000)
HEAT PUMP
![](https://carboquant.empa.ch/documents/146981/355614/AirConditioner_icon.jpg/b97402a4-976a-4afb-9969-a94a066a4636?t=1448882490000)
AC
SOLAR PANELS
All required electric energy for SELF is harvested from solar radiation with photo voltaic (PV) cells. Single crystalline cells of up to 20 % conversion efficiency are used. Electric energy is stored in batteries for short term storage of several days and as hydrogen for long term storage from summer into winter season.
![https://carboquant.empa.ch/documents/146981/227147/solar_panels.jpg/24533db9-354e-4622-baf1-078af95739fd?t=1448619984000](https://carboquant.empa.ch/documents/146981/227147/solar_panels.jpg/24533db9-354e-4622-baf1-078af95739fd?t=1448619984000)
PV panels cover both roof and sun shade. Installed are frameless cells in a dual tempered glass sandwich of 2 x 2 mm. The panels feature high strength at minimum weight. For system simplicity thermal collectors were not installed. PV panels in combination with a heat pump are well able to cover the hot water demand. Issues with over production of hot water in summer are avoided.
Power peak |
3.5 kW |
Module area |
20 m2 |
Cell-efficiency |
20.5 % |
Module-efficiency (approximately) |
17.5 % |
Monocrystalline cell-dimension |
125 x 125 mm |
Operating temperature |
-40° to +85°C |