Photovoltaics for a Country House – Complete Guide to Autonomous Systems 2026
19/04/2026
Do you have a country house without electricity or with an expensive electricity bill? This guide is for you.
What do you need at your country house?
| Appliance | Power | Hours/day | kWh/day |
|---|---|---|---|
| Refrigerator | 150W | 8h | 1.2 |
| LED Lighting | 50W | 5h | 0.25 |
| Television | 100W | 4h | 0.4 |
| Water pump | 500W | 1h | 0.5 |
| Chargers | 50W | 3h | 0.15 |
| Total | ~2.5 kWh/day |
How much system do you need?
| Consumption/day | Photovoltaics | Battery | Cost |
|---|---|---|---|
| 1–2 kWh | 1–2 kW | 5–8 kWh | €4,000–€8,000 |
| 2–5 kWh | 2–3 kW | 10–15 kWh | €8,000–€15,000 |
| 5–10 kWh | 4–5 kW | 15–20 kWh | €15,000–€25,000 |
Real-life example
Michalis had an 80sqm country house in Evia without electricity. He installed a 2kW system with Longi panels, a Victron MultiPlus-II, and a Pytes 10kWh battery. Cost: €10,500. Complete autonomy all year round. Comment: "Now I go to my country house whenever I want without thinking if I have electricity."
💡 Tip: For country houses on islands (Crete, Rhodes, Corfu), add 10-15% more battery capacity due to high summer sunshine but higher winter consumption.
FAQ
Can I install air conditioning?
Yes, but you need a larger system (+1-2kW extra). It is usually only activated in the summer.
Do I need a permit?
No! Off-grid systems are not connected to the grid and do not require a permit.
What happens in winter?
Batteries cover nights and cloudy days. For winter use, add extra battery capacity.