Inverter Load Analysis [RE-wrenches]

[Barbra Kerr]

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Joel Davidson writes: 

> It's good to give prospects summer and winter system designs so they can 
> make a choice. Often in places that get half as much sun in winter, summer 
> system sticker shock turns off a prospect otherwise open to PV. Local 
> custom and availability of gen sets is another reason for offering PV/gen 
> set hybrids. Windpower in winter is also an attractive lower cost way to 
> wean the mechanically inclined away from their gen set. 
> 
> Question 1: Do you all have a few, some or many PV/gen set customers who 
> expand their PV systems and phase out the genny or do they stay with their 
> initial system? 
> 
> Question 2: How many of you all have never sold a gen set? 
> 
Joel - 

Having lived through the San Diego fires where over 350 off grid homes lost 
their homes (most because of lack of a generator) or any other type of one 
demand back-up power, I will ONLY sell an off grid system WITH a 12kW LPG 
Kohler generator, with dedicated 250 gallon tank (< $6,000) installed with 
the PV system.  My off grid clients are in the mountains, where we have 
fires weekly in the summer time.  Once you bring up the fire protection 
issue peoples priorities shift a bit. 

For this reason, I would never recommend being without a generator, but 
weaning them off the generator, I would always recommend. 

Barbra K. Kerr
President
Kerr Enterprises, Inc
209-586-9011
209-586-8607 Fax
858-337-5097 Cell 

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