Investing in a household solar panel system, based on two alternatives offered by the state, the solar panels on roofs program and net metering, promises to offer consumers energy cost savings of between 5,800 and 10,000 euros.

Electricity generated by solar panels and injected entirely into the grid through the solar panels on roofs program is sold at a rate of 87 euros per MWh over a twenty-year period.

In the case of net metering, the network is essentially utilized like an energy storage system for energy not consumed the moment it is generated. Photovoltaic production injected into the grid is offset with electricity the system’s holder consumes from the network.

The solar panels on roofs program is a better option for households with small and occasional consumption patters, such as holiday homes.