Anyone purchase a Zero Export control or limiter? What was the outcome?

roadglide

A number of companies are marketing ZERO EXPORT CONTROLS.... (Stand alone limiters for grid tie to not net meter) 

Elgris is from Germany and Zed Advance from India, to name a few, Fronius markets one as well.

I believe all Zero Export device / Zero Export Controller / Solar Export Limiter require an energy meter at grid point with current transformers. We are single -split phase here 120/240v in the USA and some other countries like Philippines, I believe.

Curious if anyone has experience installing, configuring this system....

mike95490

I fail to see how it can control the inverter output, other than using a relay to slam it off or on, loosing a fair amount of harvest in the process.   Better to use an inverter with a built in zero export and let it throttle itself

BB.

It looks like the function is relatively straight forward. Current sensor(s) on the grid interface, a black box to measure the power flow (web interface), and a feedback (digital?) back to the GT Inverter (inverter needs an interface to control output current from 0% to 100% of output (or fixed kWatt output to allow for variations in solar energy to not affect the negotiated power feed back to the utilty--My guesses).

Supported GT inverters for Elgris (so far):

http://www.elgrispower.com/zero-export-solar-controller/

SMA, KACO, ABB, REFUsol, Fronius, GROWATT, ZEVER SOLAR, DELTA, SOFAR SOLAR, HUAWEI and many more.

-Bill

Dave Angelini

Most of the battery based big name hybrid inverters do this. Not a big deal and yes I have done it for clients.
https://solar.schneider-electric.com/solution/residential-self-consumption/