Selecting the right inverter is crucial for your solar installation. If your roof experiences shading or if you want to maximize energy output, an optimized system is essential. For a south-facing roof with no shading, a string or hybrid inverter is ideal.

The primary distinction between AC (alternating current) and DC (direct current) lies in the direction of electron flow. DC flows steadily in one direction, while AC constantly changes direction. In the UK, AC is used in all domestic and commercial properties. Solar PV modules generate DC, which must be converted to AC for home use, necessitating an inverter.

The size of the inverter you need depends on the size of your solar array. Typically, the inverter size is determined by calculating the kilowatt-peak (kWp) of your solar array. For example, 10 panels rated at 430 watts each would create a 4.3 kWp system, meaning a 4 kW inverter would suffice. Due to the UK's weather and seasonal low light, it's uncommon for panels to reach their maximum output consistently. If you have ideal conditions, you might opt for a slightly larger inverter to accommodate extra generation. Contact Green Guardians for a personalized assessment.