Comments on: States expand rooftop solar potential with smart inverter rollout

By: Andi

Andi — Mon, 04 May 2020 07:15:34 +0000

Please do not use such graphics like this.
The voltage of A PV-system, respectively an inverter will never hit the dashed lines (ANSI Range Limits), instead it will shut down.
And this is no smart inverter feature, this inverters had to grant at any time.

By: Rex Berglund

Rex Berglund — Wed, 08 Apr 2020 20:05:04 +0000

In reply to Solarman.

This experiment is in the wild, and will provide valuable real world experience for autonomous distributed grid management. “Next-generation power devices is(are) steadily sharing electricity between solar panels, batteries, heaters, and vehicles connected throughout the neighborhood.”

https://www.nrel.gov/news/features/2019/small-colorado-utility-sets-national-renewable-electricity-example-using-nrel-algorithms.html

By: Solarman

Solarman — Wed, 08 Apr 2020 18:17:29 +0000

Instead of some kind of utility to residential inverter, communications to change “inverter settings”, use communications between the inverter to the ESS to create their own micro-grid that would “allow” say 500Wh of solar PV during the day to go back onto the grid , while saving the rest of the generated energy in the ESS for later in the afternoon hours and into the nighttime grid demand period. Right now most rote electric utility’s are in the electricity price spiking market and excuse mongering: “When your neighbor installs solar PV it increases your electric rates.” Many are adopting TOU rate spiking from 3 PM to 9 PM every day, then some are already crying about early morning from 6 AM to 9 AM as “another” time frame that “needs” rate spiking. In the future, this tells me the solar PV and smart ESS needs roughly 10 hours of off peak energy storage. On “average” this is about 48kWh of usable energy storage.