May 6, 2019
Distribution-connected PV inverters with advanced functionality, also known as “smart inverters”, have become mainstream in recent years. Analyses and field experience have demonstrated that smart inverters are a cost-effective alternative to achieve higher penetration of PV in distribution circuits and at the system level. However, the full potential of smart inverters is yet to be realized. This will happen over time, as the fleet grows, and as their capabilities are adopted more widely and put to good use. Interconnection rules requiring grid support functions were first adopted in California (Rule 21), to address the effects of rapid PV deployment. These requirements, being rolled out in a phased approach, effectively defined what…
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