Outback grid tie ineffciency [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

I typically see 90% efficiency between the MX and FX green tag meter. 
Remember the utility meter will not tell what you are generating only 
what you are selling, which is local generation minus local loads.

Todd


Carl Hansen wrote:
> 
> Greetings,
> 
>   I've got a GTFX installed with 1400 watts of PV, the output of the 
> inverter goes through the utilities REC meter before it ties into the  
> main 
> panel, so the REC meter records all the days output from the inverter 
> into 
> the grid. What I'm finding is the REC meter records between 1 K watts to 
> 1.5 
> K watts less at the end of the day than the MX 60 tells me passed 
> through 
> it. So, I'm seeing between 15% -20% loss of power.  I know the inverter 
> has 
> some power transfer inefficiency and it draws power over night standing 
> at 
> idle, and the batteries get recharged in the morning,but the batteries 
> are 
> at 25.4 in the morning before sunrise, is this what I have to expect 
> from 
> the system?
> 
> Carl Hansen
> Hansen&Sun Elect. 
> 
> 


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