[RE-wrenches] 3rd party appraisal for Sonnen system donated to community college?

[Dan Fink]

Thanks ! Did you get my email this morning with all the photos and info
about the donated system? I sent it from my PCC email address to keep it
all official. If you didn’t, let me know and I’ll send it again.

Dan Fink
Owner, Buckville Energy Consulting LLC
IREC Certified Instructor for PV and Small Wind Installation
NABCEP Certified PV System Inspector
NABCEP PV Associate
danbob88 at gmail.com
970-672-4342




On Wed, Feb 11, 2026 at 8:31 PM Chris Sparadeo via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi Dan,
>
> I have experience with installing and servicing Sonnen. Although I let my
> certification lapse, Sonnen still allows me to work on their systems (maybe
> because no one else will in my area). Let me know if I can be of any help.
>
> Best,
>
> Chris
>
> On Mon, Feb 9, 2026 at 8:27 PM Dan Fink via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Esteemed Wrenches — Please contact me off list if you are willing and
>> able to provide such a document as described here.
>>
>> I run the NABCEP PV Associate training program at Pueblo Community
>> College in Colorado, funded by a State renewable energy workforce
>> development grant. A colleague way up in NOCO where I live is upgrading the
>> ESS at one of his installations away from the existing Sonnen. His client
>> wants to donate it to the college. The original Sonnen ESS equipment cost,
>> no install labor included, was right at about $24k.
>>
>> The IRS paperwork 8283 clearly states that the Appraiser cannot be me or
>> anyone from the college, and can’t be anyone from the PV installation
>> company either.
>>
>> PCC and myself would be eternally grateful if someone with Sonnen
>> experience could help and provide an appraisal. The client wants a tax
>> deduction of course, but my students and myself could have endless fun with
>> a vintage Sonnen, explore different battery charge/discharge curves, try to
>> dark start, etc.
>>
>> TIA, please contact off list. I have lots of photos, receipts etc.
>>
>> Dan Fink
>> Renewable Energy Program Coordinator, Pueblo Community College
>> IREC Certified Instructor for PV and Small Wind Installation
>> NABCEP Certified PV System Inspector
>> NABCEP PV Associate
>> danbob88 at gmail.com
>> 970-672-4342
>>
>>
>>
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