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Rule 21

News California Building Standards vote
California’s PUC just made huge changes to its Rule 21...

The California Public Utilities Commission (CPUC) just issued sweeping changes to Rule 21, the rules under which distributed energy resource...

September 25, 2020
Policy deadline rule 21 california
California Rule 21 compliance deadline extended to June 22

As of March 20, 2020 the California Public Utilities Commission has issued an extension of the CA Rule 21 compliance deadline, pushing the d...

March 30, 2020
News Rule 21 compliance
Solar-Log, Kitu Systems collaborate on solar plant solutions to comply...

Solar-Log and Kitu Systems are collaborating to offer expert solar plant monitoring, control and communication solutions that meet the new C...

March 16, 2020
News utility communication standard
New standard emerging for grid operators to communicate with DER...

A collaborative team published a new Application Note to help grid operators communicate with distributed energy resources (DER) and enhance...

January 14, 2019
eBOS SolarEdge
SolarEdge products ready to meet both NEC 2017 and Rule...

  SolarEdge Technologies is ready for the implementation of both NEC 2017’s revision to the PV Rapid Shutdown System (PVRSS) requ...

December 11, 2018
News california Rule 21 approved inverters
Which inverters are Rule 21 certified? Here’s the most recent...

California’s Rule 21 will be going into effect on Sept. 8, at which time, if you are installing solar in California, you will need to ...

August 14, 2017
News Yaskawa solectria inverters
Yaskawa-Solectria says PVI 50, 60 TL inverters now meet California...

Yaskawa – Solectria Solar, a U.S. commercial PV inverter manufacturer, announced that their PVI 50 TL and PVI 60 TL inverters are...

July 11, 2017
Policy solaredge advanced inverter
Rule 21 compliance: SolarEdge advanced inverters meet UL 1741 draft...

SolarEdge Technologies, a global leader in PV inverters, power optimizers, and module-level monitoring services, announces that Intertek con...

November 30, 2016
Featured Fronius rule 21
How California’s Rule 21 inverter requirements expand grid capacity, limit...

A multi-year effort has been ongoing in California to update technical requirements for connecting Distributed Energy Resources (DER) to the...

June 28, 2016
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