5 crucial facts you should be aware of when choosing PV inverters

1:1 DC:AC could be your highway to financial disaster

Poor DC:AC ratios increase costs and decrease the profitability of PV systems. 

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.

Inefficient plant design
Poor DC:AC ratio creates a cost-cost-cost situation
A poor DC:AC ratio forces plant designers to choose between a reduced array size – which reduces lifetime power production – or an increased number of inverters to achieve the same lifetime power production. This also increases installation costs, as well as operations and maintenance costs, and thereby eliminates any perceived benefits of lower inverter cost.