[RE-wrenches] Generator Controlled Mini Grid

[Drake]

A potential customer is interested in a mini grid, set up by a 
generator, to connect his array to.


Some years back, on this list, an article was linked about a 
community with a central generator that had PV input to the generator 
supplied, local grid, using electronic controls.


Has any progress been made in this technology?  Does anyone have a 
link to the electronic control equipment or any other relevant information?


Thanks,

Drake

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Re: [RE-wrenches] Accessibility of Equipment on Roof was Are PV Systems Mechanical Equipment?

[Jason Szumlanski]

Oh, yes - that is a great application for the MNPV-AC. I didn't mean to
imply there isn't a good use for them. In this particular instance the
three MVPV-AC's are really subcombiners that get all get tied together in
another subpanel at ground level. They really were not necessary, but made
it more convenient and cost effective.

It's just interesting how Midnite advertises that they can be mounted as
flat as a 3:12 pitch. What application would allow this mounting angle
where it is still readily accessible? The spec/advertising seems to imply
that these can be roof mounted in an AC string combining application.

The Soladeck combiner with fuses would appear to be non-code compliant in
any situation. I would love for someone to refute that in a convincing way
given the access requirements in 240.24(A).

*Jason Szumlanski*
*Fafco Solar*


On Thu, Feb 7, 2013 at 7:31 PM, jay peltz  wrote:

> Hi Jason,
>
> Is it possible to install them on the side of a building?
> And Dan's suggestion for the remote midnite might be perfect.
>
> jay
>
>
> On Feb 7, 2013, at 3:55 PM, Jason Szumlanski wrote:
>
> Jay,
>
> I assume you mean pitched roofs, or not readily accessible flat roofs.
> This particular project happens to be a flat commercial roof, but with no
> permanent ladder or hatch. I really didn't have to use the MNPV6-AC's, but
> it made sense in this case (excluding the access issue).
>
> Looks like my options are to remove the combiners or install a permanent
> access. Neither are fun options. Live and learn...
>
> *Jason Szumlanski** *
> *Fafco Solar*
>
>
>
> On Thu, Feb 7, 2013 at 6:27 PM, jay peltz  wrote:
>
>> I'm with your inspector on this.
>>
>> I don't install fuses or breakers on roofs
>>
>> jay
>>
>> peltz power
>>
>>
>> On Feb 7, 2013, at 12:02 PM, Jason Szumlanski wrote:
>>
>> While I haven't completely convinced the latest inspector about PV not
>> being mechanical equipment, I'm running into another issue.
>>
>> I decided to try out the new Midnite MNPV6-AC combiner for Enphase
>> circuits. Because there are overcurrent devices inside, the inspector now
>> insists that NEC 240.24(A) applies and that the enclosure must be readily
>> accessible, meaning you have to reach it without a ladder. That would seem
>> to make the MNPV6-AC as a roof mounted solution, or Soladeck combiner
>> boxes, or any other combiner box incorporating overcurrent protection,
>> pretty much useless on a pitched roof or flat roof without a permanent
>> access ladder or hatch.
>>
>> I'm debating whether to go to battle on this one or just capitulate.
>>
>> *Jason Szumlanski** *
>> *Fafco Solar*
>> *
>> *
>> P.S. To answer benn's question, there is no definition of 'mechanical,'
>> but it does define 'equipment,' and it's clear to me that PV does not fit
>> the description.
>> mbers.re-wrenches.org
>>
>>
>>
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[RE-wrenches] Snow guards for pitched roof arrays?

[Allen Frishman]

Wrencher's,
I'm working on a project for a New construction housing complex and the GC had 
planned to install snow guards to protect people in the below walkways from 
large sheets of ice/snow.   I will be installing large sections of arrays on 
much of the pitched roof and am looking for a solution to work with the Solar 
panels. Does anyone know of a product?

Thank you,
 
Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com


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Re: [RE-wrenches] Snow guards for pitched roof arrays?

[Dave Palumbo]

Al,

 

I believe that Eco Fasten Solar/ Alpine Snow Guards of Morrisville, Vermont
have been working on such a product. 

www.ecofastensolar.com 

1-877-859-3947

 

Best,

Dave

 

David Palumbo

Independent Power LLC 

462 Solar Way Drive

Hyde Park, VT 05655

www.independentpowerllc.com 

Vermont Solar Partner

25 Years Experience, (802) 888-7194 

 

 

 

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allen
Frishman
Sent: Friday, February 08, 2013 11:03 AM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Snow guards for pitched roof arrays?

 

Wrencher's,

I'm working on a project for a New construction housing complex and the GC
had planned to install snow guards to protect people in the below walkways
from large sheets of ice/snow.   I will be installing large sections of
arrays on much of the pitched roof and am looking for a solution to work
with the Solar panels. Does anyone know of a product?

 

Thank you,

 

Al Frishman
AeonSolar

(917) 699-6641   - cell
(888) 460-2867  
www.aeonsolar.com  

 

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Re: [RE-wrenches] Accessibility of Equipment on Roof was Are PV Systems Mechanical Equipment?

[jay peltz]

Hi jason,

3 questions, 
I can't find the MNPV-AC in midnites price list, is this something custom or 
just new?
And 
if you don't need breakers why not just do a junction box on the roof.
and
the inspectors I've had have requested a disconnecting means on the roof or 
visible from the roof.  So I've done the enphase suggested switches on the 
roof, but no overcurrent.  It doesn't appear that is a requirement from your 
inspector?


jay

peltz power


On Feb 8, 2013, at 7:27 AM, Jason Szumlanski wrote:

> Oh, yes - that is a great application for the MNPV-AC. I didn't mean to imply 
> there isn't a good use for them. In this particular instance the three 
> MVPV-AC's are really subcombiners that get all get tied together in another 
> subpanel at ground level. They really were not necessary, but made it more 
> convenient and cost effective.
> 
> It's just interesting how Midnite advertises that they can be mounted as flat 
> as a 3:12 pitch. What application would allow this mounting angle where it is 
> still readily accessible? The spec/advertising seems to imply that these can 
> be roof mounted in an AC string combining application.
> 
> The Soladeck combiner with fuses would appear to be non-code compliant in any 
> situation. I would love for someone to refute that in a convincing way given 
> the access requirements in 240.24(A).
> 
> Jason Szumlanski
> Fafco Solar
> 
> 
> On Thu, Feb 7, 2013 at 7:31 PM, jay peltz  wrote:
> Hi Jason,
> 
> Is it possible to install them on the side of a building?
> And Dan's suggestion for the remote midnite might be perfect.
> 
> jay
> 
> 
> On Feb 7, 2013, at 3:55 PM, Jason Szumlanski wrote:
> 
>> Jay,
>> 
>> I assume you mean pitched roofs, or not readily accessible flat roofs. This 
>> particular project happens to be a flat commercial roof, but with no 
>> permanent ladder or hatch. I really didn't have to use the MNPV6-AC's, but 
>> it made sense in this case (excluding the access issue).
>> 
>> Looks like my options are to remove the combiners or install a permanent 
>> access. Neither are fun options. Live and learn...
>> 
>> Jason Szumlanski 
>> Fafco Solar
>> 
> 

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Re: [RE-wrenches] Accessibility of Equipment on Roof was Are PV Systems Mechanical Equipment?

[Kent Osterberg]

Jason,

It seems to me that two of the exceptions in 240.24 may apply to your 
situation. Most significantly (4) For overcurrent devices adjacent to 
utilization equipment that they supply, access shall be permitted to be 
by portable means. Thus using a latter to access the ac combiner on the 
roof should be permitted. There should also be an accessible disconnect 
elsewhere (at the panel feeding the combiner for instance.) That (may) 
makes the breakers in the ac combiner supplementary and thus they 
wouldn't have to be accessible.


Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
 


On 2/8/2013 7:27 AM, Jason Szumlanski wrote:
Oh, yes - that is a great application for the MNPV-AC. I didn't mean 
to imply there isn't a good use for them. In this particular instance 
the three MVPV-AC's are really subcombiners that get all get tied 
together in another subpanel at ground level. They really were not 
necessary, but made it more convenient and cost effective.


It's just interesting how Midnite advertises that they can be mounted 
as flat as a 3:12 pitch. What application would allow this mounting 
angle where it is still readily accessible? The spec/advertising seems 
to imply that these can be roof mounted in an AC string combining 
application.


The Soladeck combiner with fuses would appear to be non-code compliant 
in any situation. I would love for someone to refute that in a 
convincing way given the access requirements in 240.24(A).


*Jason Szumlanski*
/Fafco Solar/


On Thu, Feb 7, 2013 at 7:31 PM, jay peltz > wrote:


Hi Jason,

Is it possible to install them on the side of a building?
And Dan's suggestion for the remote midnite might be perfect.

jay


On Feb 7, 2013, at 3:55 PM, Jason Szumlanski wrote:


Jay,

I assume you mean pitched roofs, or not readily accessible flat
roofs. This particular project happens to be a flat commercial
roof, but with no permanent ladder or hatch. I really didn't have
to use the MNPV6-AC's, but it made sense in this case (excluding
the access issue).

Looks like my options are to remove the combiners or install a
permanent access. Neither are fun options. Live and learn...

*Jason Szumlanski*//
/Fafco Solar/



On Thu, Feb 7, 2013 at 6:27 PM, jay peltz mailto:j...@asis.com>> wrote:

I'm with your inspector on this.

I don't install fuses or breakers on roofs

jay

peltz power


On Feb 7, 2013, at 12:02 PM, Jason Szumlanski wrote:


While I haven't completely convinced the latest inspector
about PV not being mechanical equipment, I'm running into
another issue.

I decided to try out the new Midnite MNPV6-AC combiner for
Enphase circuits. Because there are overcurrent devices
inside, the inspector now insists that NEC 240.24(A) applies
and that the enclosure must be readily accessible, meaning
you have to reach it without a ladder. That would seem to
make the MNPV6-AC as a roof mounted solution, or Soladeck
combiner boxes, or any other combiner box incorporating
overcurrent protection, pretty much useless on a pitched
roof or flat roof without a permanent access ladder or hatch.

I'm debating whether to go to battle on this one or just
capitulate.

*Jason Szumlanski*//
/Fafco Solar/
/
/
P.S. To answer benn's question, there is no definition of
'mechanical,' but it does define 'equipment,' and it's clear
to me that PV does not fit the description.
mbers.re-wrenches.org 





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Re: [RE-wrenches] Snow guards for pitched roof arrays?

[Benn At DayStarSolar]

Allen, 
What is the roofing material?
S-5 has a product that works well with standing-seam. 

benn
Sent from a 'smart' phone, with touch screen keys. Please excuse shortcuts and 
typos. 

On 2013-02-08, at 9:02 AM, Allen Frishman  wrote:

> Wrencher's,
> I'm working on a project for a New construction housing complex and the GC 
> had planned to install snow guards to protect people in the below walkways 
> from large sheets of ice/snow.   I will be installing large sections of 
> arrays on much of the pitched roof and am looking for a solution to work with 
> the Solar panels. Does anyone know of a product?
> 
> Thank you,
>  
> Al Frishman
> AeonSolar
> 
> (917) 699-6641 - cell
> (888) 460-2867
> www.aeonsolar.com
> 
> 
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Re: [RE-wrenches] Snow guards for pitched roof arrays?

[Allen Frishman]

composite shingles so for this project the S-5 solutions will not work.  
Al Frishman
AeonSolar

(917) 699-6641 - cell
(888) 460-2867
www.aeonsolar.com


On Feb 8, 2013, at 12:04 PM, Benn At DayStarSolar wrote:

> Allen, 
> What is the roofing material?
> S-5 has a product that works well with standing-seam. 
> 
> benn
> Sent from a 'smart' phone, with touch screen keys. Please excuse shortcuts 
> and typos. 
> 
> On 2013-02-08, at 9:02 AM, Allen Frishman  wrote:
> 
>> Wrencher's,
>> I'm working on a project for a New construction housing complex and the GC 
>> had planned to install snow guards to protect people in the below walkways 
>> from large sheets of ice/snow.   I will be installing large sections of 
>> arrays on much of the pitched roof and am looking for a solution to work 
>> with the Solar panels. Does anyone know of a product?
>> 
>> Thank you,
>>  
>> Al Frishman
>> AeonSolar
>> 
>> (917) 699-6641 - cell
>> (888) 460-2867
>> www.aeonsolar.com
>> 
>> 
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Re: [RE-wrenches] Accessibility of Equipment on Roof was Are PV Systems Mechanical Equipment?

[Jason Szumlanski]

Yeah, normally it would have been our practice to use a j-box and bring
down three strings. In this case it made more sense to combine strings on
the roof and just bring down a single circuit in a single conduit. Long
story... long wire run... probably bad planning in hindsight.

The MNPV6-AC is a new product with a disconnect on the front exterior and
up to six breakers on a DIN rail that you can combine with bus bars that
they supply. It is specifically for combining AC strings. I think it's
rated for 120A per pole. I'm impressed with the units. It makes a great
residential Enphase string combiner.

List price is $239.00 and it's on their site as the last item here:
http://www.midnitesolar.com/products.php?menuItem=products&productCat_ID=34&productCatName=PV%20Disconnecting%20Combiners%20-Not%20Birdhouse%20Compatible

You are right - jurisdictions around here do not require disconnects on the
roof. The AC connectors on the inverters suffice. We normally just do a
j-box and transition to THWN. We've been using TC-ER to extend the trunk
lines and just use one j-box with all circuits running down a single
conduit to whatever combiner we need or to the load center for smaller
systems. No utility discos <10kW here. Yay!

*Jason Szumlanski** *

*Fafco Solar*

*
*


On Fri, Feb 8, 2013 at 11:11 AM, jay peltz  wrote:

> Hi jason,
>
> 3 questions,
> I can't find the MNPV-AC in midnites price list, is this something custom
> or just new?
> And
> if you don't need breakers why not just do a junction box on the roof.
> and
> the inspectors I've had have requested a disconnecting means on the roof
> or visible from the roof.  So I've done the enphase suggested switches on
> the roof, but no overcurrent.  It doesn't appear that is a requirement from
> your inspector?
>
>
> jay
>
> peltz power
>
>
> On Feb 8, 2013, at 7:27 AM, Jason Szumlanski wrote:
>
> Oh, yes - that is a great application for the MNPV-AC. I didn't mean to
> imply there isn't a good use for them. In this particular instance the
> three MVPV-AC's are really subcombiners that get all get tied together in
> another subpanel at ground level. They really were not necessary, but made
> it more convenient and cost effective.
>
> It's just interesting how Midnite advertises that they can be mounted as
> flat as a 3:12 pitch. What application would allow this mounting angle
> where it is still readily accessible? The spec/advertising seems to imply
> that these can be roof mounted in an AC string combining application.
>
> The Soladeck combiner with fuses would appear to be non-code compliant in
> any situation. I would love for someone to refute that in a convincing way
> given the access requirements in 240.24(A).
>
> *Jason Szumlanski*
> *Fafco Solar*
>
>
> On Thu, Feb 7, 2013 at 7:31 PM, jay peltz  wrote:
>
>> Hi Jason,
>>
>> Is it possible to install them on the side of a building?
>> And Dan's suggestion for the remote midnite might be perfect.
>>
>> jay
>>
>>
>> On Feb 7, 2013, at 3:55 PM, Jason Szumlanski wrote:
>>
>> Jay,
>>
>> I assume you mean pitched roofs, or not readily accessible flat roofs.
>> This particular project happens to be a flat commercial roof, but with no
>> permanent ladder or hatch. I really didn't have to use the MNPV6-AC's, but
>> it made sense in this case (excluding the access issue).
>>
>> Looks like my options are to remove the combiners or install a permanent
>> access. Neither are fun options. Live and learn...
>>
>> *Jason Szumlanski** *
>> *Fafco Solar*
>>
>>
>
>
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[RE-wrenches] Alarm start stop alarm

[Kirpal Khalsa]

Hey Folks.I was hoping someone might be able to help with a
recommendation for a sound alarm for when a generator starts and stops in
an outback controlled auto gen start systemcustomers generator is in a
remote building and they cant always hear when it starts or stops.
Thank you!
Kirpal Khalsa
Renewable Energy Systems
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Re: [RE-wrenches] Alarm start stop alarm

[Kent Osterberg]

I've got a customer that has outside lights that are only on when the 
generator runs. Also has a siren/strobe light alarm that comes on when 
the batteries are below the 2-minute threshold for the generator start.


Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882

On 2/8/2013 9:36 AM, Kirpal Khalsa wrote:


Hey Folks.I was hoping someone might be able to help with a 
recommendation for a sound alarm for when a generator starts and stops 
in an outback controlled auto gen start systemcustomers generator 
is in a remote building and they cant always hear when it starts or 
stops.

Thank you!
Kirpal Khalsa
Renewable Energy Systems





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[RE-wrenches] Insulated cabinet source

[Kirk]

Hello,
I'm looking to source insulated cabinets, relatively large to house -3- Fronius 
5 Kw inverters. They only have a low operating temp spec of -4F. I plan to 
supply min heat using a small resistive element. Long story, but inverters have 
to be mounted at the array and I must use Fronius. This is part of an OEM 
module evaluation in cold climates. Permitting does not allow building a shed. 
Thanks.


Kirk Herander
VSE
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Re: [RE-wrenches] Insulated cabinet source

[Dave Palumbo]

Kirk,

A few years ago Jeff Randal at DPW made us a nice cabinet for a single
Fronius inverter. It was not insulated. Maybe they could customize a unit to
your specs?

Dave

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirk
Sent: Friday, February 08, 2013 1:38 PM
To: RE-wrenches
Subject: [RE-wrenches] Insulated cabinet source

Hello,
I'm looking to source insulated cabinets, relatively large to house -3-
Fronius 5 Kw inverters. They only have a low operating temp spec of -4F. I
plan to supply min heat using a small resistive element. Long story, but
inverters have to be mounted at the array and I must use Fronius. This is
part of an OEM module evaluation in cold climates. Permitting does not allow
building a shed. Thanks.


Kirk Herander
VSE
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Re: [RE-wrenches] Snow guards for pitched roof arrays?

[Garrison Riegel]

Have you considered installing a flashing like the EcoFasten GF-1, lagging
the L-foot to the rafter, and then spanning the L-feet with some AL angle?
We use flashings similarly for supporting conduit on roofs, which works very
well.

 

Garrison

Solar Service Inc

 

847-677-0950

 

From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allen
Frishman
Sent: Friday, February 08, 2013 11:11 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Snow guards for pitched roof arrays?

 

composite shingles so for this project the S-5 solutions will not work.  

Al Frishman
AeonSolar

(917) 699-6641   - cell
(888) 460-2867  
www.aeonsolar.com  

 

On Feb 8, 2013, at 12:04 PM, Benn At DayStarSolar wrote:





Allen, 

What is the roofing material?

S-5 has a product that works well with standing-seam. 

benn

Sent from a 'smart' phone, with touch screen keys. Please excuse shortcuts
and typos. 


On 2013-02-08, at 9:02 AM, Allen Frishman  wrote:

Wrencher's,

I'm working on a project for a New construction housing complex and the GC
had planned to install snow guards to protect people in the below walkways
from large sheets of ice/snow.   I will be installing large sections of
arrays on much of the pitched roof and am looking for a solution to work
with the Solar panels. Does anyone know of a product?

 

Thank you,

 

Al Frishman
AeonSolar

(917) 699-6641   - cell
(888) 460-2867  
www.aeonsolar.com  

 

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Re: [RE-wrenches] Alarm start stop alarm

[Chris Mason]

Easy peasy.
The Outback provides 12V to power a relay for the AGS. Change the relay to
DPST so you have additional contacts to switch a siren
http://www.mouser.com/ProductDetail/Omron-Electronics/G4W-2214P-US-HP-DC12/?qs=sGAEpiMZZMs8I5ltipPMAFAts%252bPMgw13

or,
Run a small 12V siren from the AUX out of the Outback -
http://www.mouser.com/ProductDetail/PUI-Audio/AW-10FR-NSVC/?qs=sGAEpiMZZMsK322k1rNFfen7eDOmPri08xfV7k%252bSSd4%3d

or,
Run an AC power siren off the generator output.

or,
If the generator has a load management module, use that to provide
switching.



On Fri, Feb 8, 2013 at 1:36 PM, Kirpal Khalsa  wrote:

> Hey Folks.I was hoping someone might be able to help with a
> recommendation for a sound alarm for when a generator starts and stops in
> an outback controlled auto gen start systemcustomers generator is in a
> remote building and they cant always hear when it starts or stops.
> Thank you!
> Kirpal Khalsa
> Renewable Energy Systems
>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Insulated cabinet source

[Chris Mason]

http://www.usedtowers.com/CABINETS/CABINETS.htm


On Fri, Feb 8, 2013 at 2:48 PM, Dave Palumbo
wrote:

> Kirk,
>
> A few years ago Jeff Randal at DPW made us a nice cabinet for a single
> Fronius inverter. It was not insulated. Maybe they could customize a unit
> to
> your specs?
>
> Dave
>
> -Original Message-
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirk
> Sent: Friday, February 08, 2013 1:38 PM
> To: RE-wrenches
> Subject: [RE-wrenches] Insulated cabinet source
>
> Hello,
> I'm looking to source insulated cabinets, relatively large to house -3-
> Fronius 5 Kw inverters. They only have a low operating temp spec of -4F. I
> plan to supply min heat using a small resistive element. Long story, but
> inverters have to be mounted at the array and I must use Fronius. This is
> part of an OEM module evaluation in cold climates. Permitting does not
> allow
> building a shed. Thanks.
>
>
> Kirk Herander
> VSE
> ___
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>
> List Address: RE-wrenches@lists.re-wrenches.org
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> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
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>


-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] getting PV modules up to the roof

[William Miller]

Eric:

I'd be careful about attaching a large object to the back of anyone 
climbing a ladder.  You are attaching a sail to your climber and if a gust 
comes up there is no easy way to shed a back pack while holding on for dear 
life.


William Miller



At 12:51 PM 2/7/2013, you wrote:
I agree that its impossible to maintain 3 points of contact on a ladder 
while sliding a module up above you.   I've done it many times but I agree 
that its probably not kosher according to OSHA.


This reminds me of a product idea I had with a friend who does canvas 
sewing for boat covers and such.


How about this?:A heavy-duty canvas bag for carrying PV modules, with 
backpack straps and D-rings in the corners?   With a module pack bag, 
installers could climb a ladder with both hands while the module is 
securely on their back,  Or it could also provide an easy way to tie on a 
rope and haul them up, or secure them on a sloped roof before 
installation.How many installers would be interested in something like 
that??  How much would you be willing to pay for it?


Eric
Solar Nexus International


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Re: [RE-wrenches] Generator Controlled Mini Grid

[Kevin Pegg]

Hi Drake, 

SMA has very good solutions for this. Does this out of the box without a bunch 
of custom control systems. I have put a few systems in like this, but the 
renewables not yet online (generator / battery now). If you google Isle of Eig 
you will find some info on what they have done there. 
http://islandsgoinggreen.org/about/eigg-electric/

Kevin

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org]On Behalf Of Drake
Sent: February 8, 2013 6:41 AM
To: RE-wrenches
Subject: [RE-wrenches] Generator Controlled Mini Grid


A potential customer is interested in a mini grid, set up by a 
generator, to connect his array to.

Some years back, on this list, an article was linked about a 
community with a central generator that had PV input to the generator 
supplied, local grid, using electronic controls.

Has any progress been made in this technology?  Does anyone have a 
link to the electronic control equipment or any other relevant information?

Thanks,

Drake

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