US national lab highlights inverter approach as cheaper alternative to DTT

"Direct transfer trip," a costly approach to ensure that distributed generation shuts down during a power outage, can make solar projects uneconomical. A US national lab report points to a combination of inverter-based approaches as a viable alternative.From pv magazine USA Inverter-based detection functionality that can shut off a distributed solar project's generation in the event of a power outage "is a viable alternative to direct transfer trip in many cases," says a report from Sandia National Laboratories. Utilities in 14 states have required direct transfer trip infrastructure for at least ...

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