How much does solar energy really cost?

How much does solar energy really cost?

For those who request a quote to install a solar system in their home, they receive an offer in which it is shown that the electricity bill with the concessionaire can be practically zero.

The solution is simple. The system is sized so that it produces all the energy consumed monthly.

But... this production takes place during the day, of course. Then the surplus is exported to the public grid, which serves to compensate for the energy consumed from the grid at night. And so the balance is zeroed.

In order for this solution to be viable, it is necessary to have firm plants that produce energy at night.

Thus, the solar solution requires investment in itself, in the firm plant (mainly hydraulic in Brazil) and even thermal plants for when the reservoirs are low.

The solar plant requires an investment on the order of twice the traditional one (in its own and in the firm hydraulic plants)

Bottom line: solar energy is much more expensive even though it is sold as being cheaper. There is a "hidden" cost that is paid by all consumers.