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String optimizers, like this one from Ampt, put voltage and current limits on each string to achieve 100 percent longer strings without exceeding 1,000 volts.

How optimizers bridge the gap to 1,500-volt PV systems

March 21, 2016 at 2:31 pm 3 comments

The need to lower PV system costs is driving large-scale solar developers to consider changing from 1,000- to 1,500-volt DC systems. The United States PV market was able to lower the cost of PV systems by increasing the maximum system voltage from 600 to 1,000 volts a few years ago.Read More