[RE-wrenches] Grid tie w/o battery no sell back

[wes kennedy]

HI Jay,
The Fronius line, primo or symo have that capability. You need the smart meter to measure current flow at point of interconnection. The tricky bit is what happens when a big load suddenly turns off. There will always be a small flow of energy across the meter for a second or two while the system reacts and curtails the pv array. HECO was fine with this limited, momentary export of energy.These residential systems typically have very low performance factors, as the PV peaks around noon, when a typical load profile peaks morning and evening. So you end up curtailing most of your pv production. In a commercial application though, zero export can work really well, if you size PV to midday loads. 
-Wes Kennedy 

    On Wednesday, August 28, 2019, 09:51:40 PM MDT, Jay <jay.peltz at gmail.com> wrote:  
 
 Hi Chris, 
So it doesn’t sound like what I’m after. 
I’m looking for a GT WO batteries  hooked to the main panel just like normal but having communication from the main ( could be reading smart meter or using sensors) to allow power to be consumed in the house but no export to the grid by reducing power from the GT inverter. I know it’s done in other countries, India for example. 
No sub panel, no dedicated loads panel, no back up, just a normal GT system for self consumption with of course the grid suppling what ever the GT inverter isn’t. 
Guessing from comments so far I’m SOL. 
Jay
On Aug 28, 2019, at 6:28 PM, Chris Sparadeo <sparadeo.chris at gmail.com> wrote:


Jay,
My understanding is that the Outback SkyBox is capable of supplying power to AC loads (what they call “micro grid”) without needing grid input or a DC storage system. Kind of like the SMA SunnyBoy secure power supply, only on a larger scale. However, depending on the electrical demands of the loads being energized, there is potential that solar PV production would not supply necessary power in the daytime...Also, the system would essentially de-energize during low irradiance/night times. 
Best,
Chris 
On Wed, Aug 28, 2019 at 9:19 PM Chris Sparadeo <c2 at catamountsolar.com> wrote:

Jay,
My understanding is that the Outback SkyBox is capable of supplying power to AC loads (what they call “micro grid”) without needing grid input or a DC storage system. Kind of like the SMA SunnyBoy secure power supply, only on a large scale. However, depending on the electrical demands of the loads being energized, there is potential that solar PV production would not supply necessary power in the daytime...Also, the system would essentially de-energize during low irradiance/night times. 
Best,
Chris 
On Wed, Aug 28, 2019 at 9:03 PM Jay <jay.peltz at gmail.com> wrote:

are there any products out there that can do a grid tie w/o batteries but no sell back to the 
grid?

Thx
Jay

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