[RE-wrenches] Offgrid Generators?

Ray ray at solarray.com
Thu Feb 27 20:24:02 EST 2020


Well, that's certainly a glowing (hot) review for Kohler. Amazing that 
with as much progress as we've made with solar, MPPT controllers, and 
Li+ batteries, the industry has gone backwards significantly in the 
generator department.  Kohler used to make a wonderful little water 
cooled 1800 rpm model, some of which are still in service.

Ray Walters
Remote Solar
303 505-8760

On 2/27/20 5:45 PM, Amanda Potter wrote:
> We Installed a Kohler 14RES, L.P. & the crank-case breather froze ( 
> the generator was on auto & was in a shelter), and the dip-stick blew 
> out & the generator had just started & set the engine on fire. Oil 
> everywhere.
> Luckily a worker saw the flames, (this was new Off-Grid construction), 
> and was able to put the fire out.
> The construction workers did not trust the off-grid system anymore 
> (Conext XW6848, which worked exactly as it was designed), and the 
> owner tried and tried to get Kohler to honor the warranty (500 hours), 
> but to no avail.
> He had to buy another generator.
>
> Amanda Potter
> Energy Storage Specialist
> NABCEP PV Installation Professional
> NYSERDA Eligible PV Installer
> Adirondack Battery & Solar, LLC
> Potsdam, NY
> (315) 212-2114
>
>> On Feb 27, 2020, at 6:22 PM, Mac Lewis <maclewis1 at gmail.com> wrote:
>>
>> 
>> We have had pretty good luck with the 14 kW Kohler which has an 
>> off-grid warranty.  Its not perfect but it seems solid.  We have had 
>> a few people with near 5000 hours on them.  The controller is a bit 
>> of an energy hog but its the best we've found that weighs all of 
>> these issues.
>>
>> On Thu, Feb 27, 2020 at 4:06 PM Dave Angelini Offgrid Solar 
>> <offgridsolar at sti.net <mailto:offgridsolar at sti.net>> wrote:
>>
>>     The Honda EU7000i also has it's own remote start kit that plugs
>>     into a
>>     socket on the genset. I think it has a 140 foot cable. About as
>>     easy to
>>     install as there is. Incredible life and reliability. We do not
>>     need a
>>     genset here but many of my clients use these.
>>
>>     Dave Angelini Offgrid Solar
>>     "we go where powerlines don't"
>>     http://members.sti.net/offgridsolar/
>>     e-mail offgridsolar at sti.net <mailto:offgridsolar at sti.net>
>>     text 209 813 0060
>>
>>     On Thu, 27 Feb 2020 14:53:09 -0800, Michael Morningstar
>>     <mjmorningstar at gmail.com <mailto:mjmorningstar at gmail.com>> wrote:
>>     > For small propane generators: Honda eu7000i w/propane
>>     conversion from
>>     > GenConnex and 2 wire start kit from GenLine. I’ve installed a
>>     couple
>>     dozen.
>>     > 4-8k hours life expectancy. Correct jet is a must for altitudes
>>     over
>>     5.5k.
>>     > Alternators are a bit weak so I install a NOKO that’s plugged
>>     into the
>>     > generators own receptacle for extra on board charging.
>>     >
>>     > Small Diesel 7.5kw and up, that’s easy. Wrico International.
>>     I’ve got
>>     over
>>     > a hundred out there. No standby power draw. Super simple.
>>     Bulletproof.
>>     The
>>     > only issues I’ve seen are fuel supply related. 20k hours no
>>     problem.
>>     Open
>>     > Frame, so some protection is needed. They are building 7.5kw and up
>>     propane
>>     > generators now. I haven’t used one yet, but will when the right
>>     project
>>     > comes around. Their product support is the best. Call them and
>>     you will
>>     > speak to one of the principals. They can walk a layperson customer
>>     through
>>     > just about anything I would be called on to service.
>>     >
>>     > The larger low RPM, water cooled propane generators aren’t
>>     without their
>>     > problems. Kohler and Cummins/Onan have had problems within 2-3k
>>     hours.
>>     They
>>     > just aren’t the same as 10 years ago.
>>     >
>>     > Many dozens of Multi Quips out there. They are good choice.
>>     Tech support
>>     > response is generally slow.
>>     >
>>     > Michael
>>     >
>>     >> On Feb 27, 2020, at 2:25 PM, Ray <ray at solarray.com
>>     <mailto:ray at solarray.com>> wrote:
>>     >>
>>     >> I know we have covered this before, but I just continue to be
>>     >> disappointed with the Generac Ecogen.  Very high failure rate, and
>>     >> support is poor.  Service requires expensive on site service.
>>     Also the
>>     no
>>     >> load AC draw and programming setup is just not off grid ready
>>     at all.
>>     >> I'm still not seeing any other great choices, though.  Here's some
>>     other
>>     >> possibilities:
>>     >>
>>     >> 1) Quality portable, like the Honda EU 7000i or Northstar with
>>     Honda
>>     >> motor.  Not the best choice especially for autostart, no
>>     propane, but
>>     at
>>     >> least they can take it in to the shop if it goes down.
>>     >>
>>     >> 2) Kubota (or MQ) diesel. expensive, and possible cold weather
>>     start
>>     >> issues?
>>     >>
>>     >> 3) 20+ kW water cooled, 1800 rpm propane model.  Overkill,
>>     expensive,
>>     >> but probably will last a really long time.
>>     >>
>>     >> 4) Similar Home standby unit, but Kohler brand.  Kohler used to be
>>     >> great, but now a days I'm not so sure.
>>     >>
>>     >> I just can't keep recommending a generator I know has been
>>     giving other
>>     >> customers trouble.  Any new ideas on this age old problem?
>>     >>
>>     >> --
>>     >> Ray Walters
>>     >> Remote Solar
>>     >> 303 505-8760
>>     >>
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>> -- 
>>
>>
>>
>> Mac Lewis
>>
>> *
>>
>> "Yo solo sé que no sé nada." -Sócrates
>>
>> *
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