Voltage steps up
At the transformer, voltage is stepped up to match the grid. The energy goes one of two ways here, either to our onsite substation or to batteries for temporary storage.
Half of the energy generated during the day goes to our small onsite substation usually via underground cables. It has a transformer too, so we can adjust the voltage so it can cope with the existing infrastructure.
The other half of the energy will be held temporarily on batteries on the same site as the panels. During the nighttime, no new energy is generated and so we can send the stored voltage to our substation. This means that we can maximise the grid connection, ensure a constant supply of electricity and not waste any energy.