The cost depends on the system size, equipment quality, and whether it includes a battery. Indicatively:

• 3kW System: €3,000 – €5,000
• 5kW System: €4,500 – €7,500
• 10kW System: €8,000 – €14,000

If a storage battery is added, the cost can increase by €2,000 – €6,000. Nevertheless, the investment typically pays for itself in 4 to 7 years, depending on household consumption.

A properly sized photovoltaic system can reduce your electricity bill by up to 60% – 90%. For example:

• An average home with a €150 bill can see it drop to €20–€60
• Larger households can achieve even greater savings

Savings depend on: local sunshine, electricity consumption, and the type of system.

Battery-equipped systems allow for energy storage for use at night or during times without sun.

Advantages:

• Greater autonomy
• Less dependence on the public grid (DEI)
• Stable electricity costs

Disadvantages:

• Higher initial cost
• Limited battery lifespan

In most cases, hybrid systems are the best solution for homes.

The right choice depends on consumption:

• Small home: 3kW – 4kW
• Medium home: 5kW – 7kW
• Large home: 8kW – 10kW+

A consumption study is essential before installation to avoid over- or under-investment.

The payback period for a photovoltaic system in Greece typically ranges from 4 to 7 years. After this point, the energy is essentially free for many years, as systems have a lifespan of 20–25 years.

• ✅ Check the installation area
• ✅ Request an energy study
• ✅ Pay attention to the quality of the panels
• ✅ Check warranties (at least 10–25 years)
• ✅ Check the quality of the inverter
• ✅ Compare offers

Don't choose based solely on the lowest price — quality directly affects performance.

Yes, for the majority of households in Greece, photovoltaics are one of the most efficient energy investments. They combine:

• Reduced electricity costs
• Energy independence
• Environmental benefits

As energy prices increase, the investment pays for itself more quickly.