Lena and all,
I was watching this thread closely, as I have shared your concerns and I was hoping to hear of any new solutions. In this thread I hear of Gillette (always positively over the years that this question has come up), one 5.5kW Onan RV set (120V only and too small for all but an Outback VFX at close to sea level), and Hardy diesel units. I have nothing to add to these suggestions.

I went out on a limb a few years ago in suggesting the Generac EcoGen, hoping that this would fill this need and restore Generac as a worthy name. I think now I have to just say "eh..." - yes, it works, but too many problems have been noted here, and Generac's dealer support system is poorly suited to the off grid market.

Thank you to all who replied.
Allan

Allan Sindelar
al...@sindelarsolar.com
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder (Retired), Positive Energy, Inc.
505 780-2738 cell

 

On 4/28/2016 10:19 AM, Lena Wilensky wrote:
I did some searches on the list for what folks are doing for off-grid propane generators these days, but all the threads I found were from 5-6 yrs ago, so I was hoping to get some more current info.

We're looking for about a 10kw+ propane unit (big derate at altitude), and we run into 2 main problem areas:

First is the warranty - either there are no units warranteed for off-grid use, or there are only a couple of models and the warranty is short (1 year).

Second, and perhaps larger, is all the loads that now come with the "off-grid" units.  The computer takes some, but mostly the "cold weather kit" aka carb heater must be installed in our climate (to actually start, but also for warrantee), and it's set up to be on a thermostat (read: "on all the time from Nov-April" here in the mountains).  According to the Kohler tech support it takes a steady 50W. We have set up older units to do battery charge only during the day, and have the carb heater on a manual switch, but it sounds like we can't really get at these circuits anymore since they're all pre-configured and pre-wired in the guts of the genset computer.

The Kohler and Onan support folks said both these issues are due to EPA considering off-grid use as prime power as opposed to standby, so they are held to tougher emissions standards.

Whatever the reasons, we're wondering what people are actually doing these days - still the standby units they kind-of warrantee for off-grid? 12RES from Kohler and the 13kw unit from Onan?  Generac?  Have folks been going back to the smaller gas units from Honda and running them more?  And how are cold climate folks dealing with the heating issue?

Any suggestions appreciated!

Lena Wilensky

www.nunatakenergy.com
970-642-5554
NABCEP Certified PV Installer:
Cert. #R02907-17



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