The shelter, or transformer substation, is entirely designed by Comal and available in 1, 2.8, 3, 6 MWp. This cabin must be coupled to the inverters, completing the electrical chain of the photovoltaic field.

Inside the shelter, a low voltage compartment, a transformer, and a media switch are connected directly to the energy delivery point. The shelter is also remotely controlled and equipped with a series of sensors that detect different operating states of the photovoltaic field.