The 7 variables to review
| Variable | Why it matters |
|---|---|
| Annual consumption | Defines how much energy you need to cover. |
| Daytime consumption | The more consumption matches solar production, the greater direct self-consumption. |
| Orientation and shade | They affect available production. |
| Installed power | Determines the generation capacity. |
| Installation price | Essential for calculating the payback period. |
| Surplus | Compensation depends on your contract and supplier. |
| Battery | Can increase solar use, but also increases the investment. |
Do not start by buying panels
First measure your consumption and when you use electricity. Then request several quotes and compare expected production, equipment, warranties, installation, permits and economic conditions.
Consulta también la información oficial del IDAE sobre autoconsumo antes de contratar.
Make a first estimate
It depends on your consumption, what your roof can produce and the installation cost. Before buying, calculate.
Open solar calculator →