DC:AC Ratio

DC:AC ratio compares the total rated DC power of the solar array to the rated AC output capacity of the inverter.

Product(s)

EI Inverter (EU)

A battery storage ready hybrid inverter available in single phase and three phase options.

GO Inverter

A battery storage ready hybrid inverter that can be AC or DC coupled for new or retrofit solar installations

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What does DC:AC Ratio mean?

DC:AC ratio compares the total rated DC power of the solar array to the rated AC output capacity of the inverter.

What is a good DC:AC ratio?

There is no universal perfect ratio. Designers use DC:AC ratio to balance equipment cost, expected production, clipping, climate, orientation, utility limits, and storage behavior. The math is simple; the design implications enjoy making themselves complicated.

How it relates to Tigo

Tigo’s Microinverter Tax content discusses why equal DC:AC ratios can behave differently depending on whether clipping occurs at the module level or array level.

Related Tigo resources

EI Inverter (US)
EI Inverter (EU)
GO Inverter

Related glossary terms

Clipping
Inverter Capacity
Aggregate Power Smoothing
DC Architecture