Re: [RE-wrenches] Bi-facial modules

[AE Solar]

We did a small project with Prism two years ago. In the end (3) of our (30)
panels shattered over the course of the first year. Learning curve all
around. Be very careful, the edges are super fragile and a mild impact can
cause the whole panel to shatter (their engineers said that once an
installers wedding ring shattered a panel when he grabbed it!?). Not sure
if that is the case with all bifacials or just theirs. Prism replaced at
least 2 (maybe all 3?) panels for us, but was a pain to extract them from
the array. But, as Andrew mentioned, Tyler and everyone there was super
patient  and helpful through it all.

The custom racking that Prism recommended looked sleek but ultimately I
think it caused us a lot of problems and I probably wouldn’t use it again.

On Tue, Aug 13, 2019 at 6:17 PM Andrew Truitt  wrote:

>
> Chris - A few resources:
>
> Jorge Blanquet at Silfab: j.blanq...@silfabsolar.com.  We used their
> SLA-X 295 modules for a carport project and Jorge was helpful in helping
> source from 2 different distributors (CED and Krannich).  The mods are well
> built but we're not seeing much backside production.  Word on the street is
> they flash test their bifacials against a white background.
>
> Tyler Stewart at Prism: t.stew...@prismsolar.com.  I'm not sure if Prism
> is selling into the resi market right now but Tyler is a good guy and will
> help you if he can.
>
> Chris Deline at NREL: chris.del...@nrel.gov.  Chris is working on
> simulating bifacial production in various applications, following on from
> his earlier work .  If this
> customer has a dark roof backside production will be minimal, but if they
> have a lighter colored roofing material it could boost production, and
> Chris might be able to point you towards some resources to help estimate
> that.
>
>
> Regards,
>
>
> Andrew Truitt
>
> www.dr.ventures
> d: 202.486.7507
>
> NABCEP Certified PV Installation Professional ID: 032407-66
> Colorado Journeyman Electrician License No.: 600132
>
> [image: Logo]
>
>
>
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>
> On Tue, Aug 13, 2019 at 12:30 PM Chad Waits 
> wrote:
>
>> LG makes bifacials. BayWa will have a stock of them.
>>
>> good luck.
>>
>> Chad Waits
>> President
>> 520-270-4873
>>
>>
>>
>> On Tue, Aug 13, 2019 at 10:31 AM Ryan Harkins <
>> ryan.hark...@energycraft.com> wrote:
>>
>>> Hey Chris,
>>>
>>> Speed Solar, Inc. in Deerfield, WI stocks bifacial modules from
>>> Adani/Mundra Solar.
>>>
>>> (608) 764-4900
>>> a...@speedsolar.net
>>>
>>> Ask for Al or Cal.
>>>
>>> Now mounting is the trick!
>>>
>>> Best,
>>> Ryan
>>>
>>>
>>>
>>> On Aug 13, 2019, at 9:08 AM, >> ch...@oasismontana.com> wrote:
>>>
>>> Hello people:
>>>
>>>
>>>
>>> We have a customer with their heart set on bi-facial modules for their
>>> residential project.  Despite the lack of import tariffs, they are not
>>> easily found.  Does anyone know of a company offering these?  Thanks!
>>>
>>>
>>>
>>>
>>>
>>> Chris Daum
>>>
>>> Oasis Montana Inc.
>>>
>>> 406-777-4309
>>>
>>> 406-777-4309 fax
>>>
>>> *www.oasismontana.com *
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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Re: [RE-wrenches] Bi-facial modules

[Andrew Truitt]

Chris - A few resources:

Jorge Blanquet at Silfab: j.blanq...@silfabsolar.com.  We used their SLA-X
295 modules for a carport project and Jorge was helpful in helping source
from 2 different distributors (CED and Krannich).  The mods are well built
but we're not seeing much backside production.  Word on the street is they
flash test their bifacials against a white background.

Tyler Stewart at Prism: t.stew...@prismsolar.com.  I'm not sure if Prism is
selling into the resi market right now but Tyler is a good guy and will
help you if he can.

Chris Deline at NREL: chris.del...@nrel.gov.  Chris is working on
simulating bifacial production in various applications, following on from
his earlier work .  If this
customer has a dark roof backside production will be minimal, but if they
have a lighter colored roofing material it could boost production, and
Chris might be able to point you towards some resources to help estimate
that.


Regards,


Andrew Truitt

www.dr.ventures
d: 202.486.7507

NABCEP Certified PV Installation Professional ID: 032407-66
Colorado Journeyman Electrician License No.: 600132

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this message with any third party, without a written consent of the sender.
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occur in the future.


On Tue, Aug 13, 2019 at 12:30 PM Chad Waits 
wrote:

> LG makes bifacials. BayWa will have a stock of them.
>
> good luck.
>
> Chad Waits
> President
> 520-270-4873
>
>
>
> On Tue, Aug 13, 2019 at 10:31 AM Ryan Harkins <
> ryan.hark...@energycraft.com> wrote:
>
>> Hey Chris,
>>
>> Speed Solar, Inc. in Deerfield, WI stocks bifacial modules from
>> Adani/Mundra Solar.
>>
>> (608) 764-4900
>> a...@speedsolar.net
>>
>> Ask for Al or Cal.
>>
>> Now mounting is the trick!
>>
>> Best,
>> Ryan
>>
>>
>>
>> On Aug 13, 2019, at 9:08 AM, > ch...@oasismontana.com> wrote:
>>
>> Hello people:
>>
>>
>>
>> We have a customer with their heart set on bi-facial modules for their
>> residential project.  Despite the lack of import tariffs, they are not
>> easily found.  Does anyone know of a company offering these?  Thanks!
>>
>>
>>
>>
>>
>> Chris Daum
>>
>> Oasis Montana Inc.
>>
>> 406-777-4309
>>
>> 406-777-4309 fax
>>
>> *www.oasismontana.com *
>>
>>
>>
>>
>>
>>
>>
>> ___
>> List sponsored by Redwood Alliance
>>
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>> www.members.re-wrenches.org
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Re: [RE-wrenches] Physical of Electrical Interlock

[MiJo Nels]

I really like everything I've gotten my hands on from Reliance (out of 
Wisconsin).. They will make anything you need. I like backfeeding breakers onto 
a bussing, as it seems like a more simple approach and I am trying to keep 
things easy for any future humans that find themselves troubleshooting a wacky 
system.. But you are correct, that your scenario sounds like at least one 
manual transfer switch will have to be thrown to partition the gen-set from the 
PV..

Joe Nelson

Project Manager C-46/C-10
Sustainable Energy Group Inc., A California Corporation

CSL# 868816
www.SustainableEnergyGroup.com
530-273-4422 (Office)

530-217-8385 (Cell)



   



From: RE-wrenches  on behalf of Ray 

Sent: Tuesday, August 13, 2019 11:30:17 AM
To: re-wrenches@lists.re-wrenches.org 
Subject: Re: [RE-wrenches] Physical of Electrical Interlock


What amp rating do you need?  Midnite Solar makes a small 30 amp manual 
transfer switch, while Reliance (via Northern Tool) makes 60 and 100 amp 
models.  Or are you looking for automatic transfer?  Generac makes a bunch of 
100 to 200 amp rated transfer switches.  Square D and others make some bigger 
load break rated stuff but it gets big and expensive.

Ray Walters
Remote Solar
303 505-8760

On 8/13/19 12:16 PM, Jon Siegenthaler wrote:
Hello wrenchers,
I have a client we're building for who is going to have installed two of the 
SolarEdge Storedge inverters with two of LG Chem RESU batteries. This 
electrical system also has a backup generator which then requires there to be 
an interlock between the inverters and the generator. I was hoping because this 
was a zero export system (as required or by punishment of paying the utility 
for your overproduction) that the SolarEdge smart meter would detect and not 
export to the generator, but as a fail-safe it would be better not to trust a 
$300 meter against a $10,000 generator and install an interlock.

My question is; has anyone found an interlock that would work with this system? 
From my understanding the inverters would need to switched off, but then the 
dedicated panels that the inverters are powering would need to be transferred 
over to the generator power. The simplest answer I can come up with is a panel 
with no bussing (mounted on din rail) on one side with 4-2 pole breakers, each 
is set consists of 2-2 pole breakers with jumpers on the backside so that the 
inverter has a jumper to the dedicated load panel breaker. On the other side of 
the panel would be either on a bus or also with jumpers that went to 2-2 pole 
breakers for the generator in and out and then also the 2-2 pole breakers for 
the dedicated load panels. Then there would be an interlock that slides from 
left to right to control which system was on, this being either PV or generator.

Thanks ahead of time for any help or product suggestions,

Jon Siegenthaler



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Re: [RE-wrenches] Physical of Electrical Interlock

[Ray]

What amp rating do you need?  Midnite Solar makes a small 30 amp manual 
transfer switch, while Reliance (via Northern Tool) makes 60 and 100 amp 
models.  Or are you looking for automatic transfer?  Generac makes a 
bunch of 100 to 200 amp rated transfer switches.  Square D and others 
make some bigger load break rated stuff but it gets big and expensive.


Ray Walters
Remote Solar
303 505-8760

On 8/13/19 12:16 PM, Jon Siegenthaler wrote:

Hello wrenchers,
I have a client we're building for who is going to have installed two 
of the SolarEdge Storedge inverters with two of LG Chem RESU 
batteries. This electrical system also has a backup generator which 
then requires there to be an interlock between the inverters and the 
generator. I was hoping because this was a zero export system (as 
required or by punishment of paying the utility for your 
overproduction) that the SolarEdge smart meter would detect and not 
export to the generator, but as a fail-safe it would be better not to 
trust a $300 meter against a $10,000 generator and install an interlock.


My question is; has anyone found an interlock that would work with 
this system? From my understanding the inverters would need to 
switched off, but then the dedicated panels that the inverters are 
powering would need to be transferred over to the generator power. The 
simplest answer I can come up with is a panel with no bussing (mounted 
on din rail) on one side with 4-2 pole breakers, each is set consists 
of 2-2 pole breakers with jumpers on the backside so that the inverter 
has a jumper to the dedicated load panel breaker. On the other side of 
the panel would be either on a bus or also with jumpers that went to 
2-2 pole breakers for the generator in and out and then also the 2-2 
pole breakers for the dedicated load panels. Then there would be an 
interlock that slides from left to right to control which system was 
on, this being either PV or generator.


Thanks ahead of time for any help or product suggestions,

Jon Siegenthaler

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Re: [RE-wrenches] Bi-facial modules

[Chad Waits]

LG makes bifacials. BayWa will have a stock of them.

good luck.

Chad Waits
President
520-270-4873



On Tue, Aug 13, 2019 at 10:31 AM Ryan Harkins 
wrote:

> Hey Chris,
>
> Speed Solar, Inc. in Deerfield, WI stocks bifacial modules from
> Adani/Mundra Solar.
>
> (608) 764-4900
> a...@speedsolar.net
>
> Ask for Al or Cal.
>
> Now mounting is the trick!
>
> Best,
> Ryan
>
>
>
> On Aug 13, 2019, at 9:08 AM,  ch...@oasismontana.com> wrote:
>
> Hello people:
>
>
>
> We have a customer with their heart set on bi-facial modules for their
> residential project.  Despite the lack of import tariffs, they are not
> easily found.  Does anyone know of a company offering these?  Thanks!
>
>
>
>
>
> Chris Daum
>
> Oasis Montana Inc.
>
> 406-777-4309
>
> 406-777-4309 fax
>
> *www.oasismontana.com *
>
>
>
>
>
>
>
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[RE-wrenches] Physical of Electrical Interlock

[Jon Siegenthaler]

 Hello wrenchers,
I have a client we're building for who is going to have installed two of
the SolarEdge Storedge inverters with two of LG Chem RESU batteries. This
electrical system also has a backup generator which then requires there to
be an interlock between the inverters and the generator. I was hoping
because this was a zero export system (as required or by punishment of
paying the utility for your overproduction) that the SolarEdge smart meter
would detect and not export to the generator, but as a fail-safe it would
be better not to trust a $300 meter against a $10,000 generator and install
an interlock.

My question is; has anyone found an interlock that would work with this
system? From my understanding the inverters would need to switched off, but
then the dedicated panels that the inverters are powering would need to be
transferred over to the generator power. The simplest answer I can come up
with is a panel with no bussing (mounted on din rail) on one side with 4-2
pole breakers, each is set consists of 2-2 pole breakers with jumpers on
the backside so that the inverter has a jumper to the dedicated load panel
breaker. On the other side of the panel would be either on a bus or also
with jumpers that went to 2-2 pole breakers for the generator in and out
and then also the 2-2 pole breakers for the dedicated load panels. Then
there would be an interlock that slides from left to right to control which
system was on, this being either PV or generator.

Thanks ahead of time for any help or product suggestions,

Jon Siegenthaler
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Re: [RE-wrenches] Bi-facial modules

[Ryan Harkins]

Hey Chris,

Speed Solar, Inc. in Deerfield, WI stocks bifacial modules from Adani/Mundra 
Solar.

(608) 764-4900
a...@speedsolar.net

Ask for Al or Cal.

Now mounting is the trick!

Best,
Ryan



> On Aug 13, 2019, at 9:08 AM,  
> wrote:
> 
> Hello people:
>  
> We have a customer with their heart set on bi-facial modules for their 
> residential project.  Despite the lack of import tariffs, they are not easily 
> found.  Does anyone know of a company offering these?  Thanks!
>  
>  
> Chris Daum
> Oasis Montana Inc.
> 406-777-4309
> 406-777-4309 fax
> www.oasismontana.com
>  
>  
>  
> ___
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Re: [RE-wrenches] Bi-facial modules

[Philip Lawes Insoltech]

Longi and Sunpreme

 

 

 



Philip N Lawes

172 Wave St.

Laguna Beach, Ca. 92651

Office: 949-497-6300

Cell:  949-510-0687

Email: p...@insoltechsolar.com

 

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of ch...@oasismontana.com
Sent: Tuesday, August 13, 2019 7:09 AM
To: 'RE-wrenches' 
Subject: [RE-wrenches] Bi-facial modules

 

Hello people:

 

We have a customer with their heart set on bi-facial modules for their 
residential project.  Despite the lack of import tariffs, they are not easily 
found.  Does anyone know of a company offering these?  Thanks!

 

 

Chris Daum

Oasis Montana Inc.

406-777-4309 

406-777-4309 fax

www.oasismontana.com   

 

 

 

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[RE-wrenches] Bi-facial modules

[chris]

Hello people:
 
We have a customer with their heart set on bi-facial modules for their 
residential project.  Despite the lack of import tariffs, they are not easily 
found.  Does anyone know of a company offering these?  Thanks!
 
 
Chris Daum
Oasis Montana Inc.
406-777-4309 
406-777-4309 fax
www.oasismontana.com   
 
 
 
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