Why and how to joyfully move our butts around town, without mucking the place up.

Pages with tag California Rule 21

  • Newest Products from Enphase Energy Meet the Needs of the California and Hawaii Markets <p>In California and Hawaii, policy changes are underway requiring "smart inverters" for solar power systems. Requirements going into effect in September call for what's called "Phase 1" functions, comprising a set of "autonomous" actions providing "grid support" functions like voltage or frequency support. That is, these functions happen automatically without any explicit control, and act in reaction to grid conditions. For example the voltage or frequency might go out of bounds, and rather than disconnect from the grid the inverter instead shifts into a mode of helping to correct the problem.</p> <p>The industry developed a supplemental standard, UL1741SA (Supplement A), defining those autonomous functions. Shortly Enphase, and the other solar inverter manufacturers, will be unable to sell inverters in California that lack this feature.</p>