The wall is made up of different structures called solar panels. Inside each panel there are photovoltaic light cells. Electrical current is produced in the cells in the following way:
- Photons of light (which contain energy) strike the electrons of the cell causing a potential difference (or voltage) to be made in the different spaces of the cell, and producing a continuous electrical current.
- The cells are grouped together in a panel, thereby adding together the currents and voltages generated in each one.
- The panels are grouped together in systems. Each system is connected to a converter that transforms continuous electrical current into alternating current and unifies the voltage at 230 V so as to feed it into the electrical system of the museum.
This system has a peak capacity of 39.7 kwp, and produces around 42 MWh per year.
