As module prices continue to decline, integrators can realize a significant opportunity to enlarge the size of the array while maintaining the number of inverters, otherwise known as increasing the DC:AC ratio, which is the key determinant of MWh yield, LCOE (levelized cost of energy), and ROI.
Up to 50% saved costs with a good DC:AC ratio
A good DC:AC ratio increases lifetime power production and profitability with a significant impact on system design and can actually reduce balance-of-system costs by up to 50%. However, not all inverter manufacturers, including our competitor, are able to achieve high DC:AC design ratios. SMA’s industry-leading DC:AC ratios can reach 1.5:1, while our competitor’s technical documentation advises ratios of only 1:1.