[RE-wrenches] Grid-Connect Inverter with battery, AND auto backoff?

[Troy Harvey]

I've got a high-end customer who doesn't have the interest in knowing  
the details of managing "manual" load shedding. He wants something  
that works... period. At one point Gridpoint advertised this, but they  
no longer make their products (I'm not sure they ever really had the  
feature either).



Troy Harvey
---------------------
Heliocentric
801-453-9434
taharvey at heliocentric.org


On Jun 23, 2009, at 9:31 PM, David Palumbo wrote:

> esigned and installed grid connected net metered PV systems with
> battery back up for grid outages using OutBack, Xantrex and with
> SunnyIsland/SunnyBoy. The OutBack install was in fact a whole house  
> UPS
> system with two OB VFX 3648's powering an efficient home with a  
> "Smart"
> homeowner who knows how to manage the loads in his house. Of course  
> that
> could change in the future, but for the last three years it has  
> worked very
> well. The XW and the Sunny Island systems were designed and  
> installed with
> critical loads sub panels as recommended by SMA, OutBack, and  
> Xantrex. This
> is the way to go for all but a handful of homeowners for obvious  
> reasons. I
> have not worked with smart inverter systems that shed loads, but I  
> would
> think that the technology is possible but not necessarily practical  
> or cost
> effective when compared to a simple sub panel with critical loads.