History
The microinverter concept has been in the solar industry since its inception. However, flat costs in manufacturing, like the cost of the transformer or enclosure, scaled favorably with size, and meant that larger devices were inherently less expensive in terms of price per watt. Small inverters were available from companies like ExcelTech and others, but these were simply small versions of larger designs with poor price performance, and were aimed at niche markets.
Read more about this topic: Solar Micro-inverter
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