[RE-wrenches] Very small PV systems for surveillance or other "micro" loads

Chris Mason cometenergysystems at gmail.com
Tue Jan 21 12:09:55 PST 2014


You can use the systems designed for solar street lights. TIny controllers,
small panels and everyhting mounted on a pole.


On Tue, Jan 21, 2014 at 9:07 AM, Jason Szumlanski <jason at fafcosolar.com>wrote:

> That's the answer I thought I'd get from most. It's hard to explain the
> "days of autonomy" and extended bad weather to people. Most just say, "why
> don't you just make a recommendation." That puts me in a spot where I want
> to overbuild, which drives up cost.
>
> The other challenge is getting people to tell you the real story about
> what they plan to plug in. They think 100W @ 120V continuous load 24 hours
> a day sounds like a very small load. When you hit them with a ~1kW system
> with a ~10kWh battery (with ample reliability factors considered), they
> freak out. Then you find out that the camera they wanted to plug in only
> draws 18W @ 12V (no inverter required). That's a big difference.
>
>
> Jason
>
>
> On Mon, Jan 20, 2014 at 3:46 PM, Larry Crutcher, Starlight Solar Power
> Systems <larry at starlightsolar.com> wrote:
>
>> Jason,
>>
>> We get quite a few of these from US Border Patrol, GM Proving Grounds and
>> other agencies. I always do custom design since every job has different
>> parameters like days of autonomy or remote monitoring/control (SCADA).
>>
>>
>> Larry Crutcher
>>
>>
>>
>>
>> On Jan 20, 2014, at 1:17 PM, Jason Szumlanski <Jason at fafcosolar.com>
>> wrote:
>>
>> What do you do for very small off-grid systems that people want for
>> specific equipment? Do you have a "go-to" configuration, or do you size and
>> design everything custom?
>>
>> For example, I frequently get, "I want to run cameras at a remote site
>> and the total requirement is 100W, 24 hours a day."
>>
>> It's not economical to reinvent the wheel every time.
>>
>>
>> Jason Szumlanski
>> Fafco Solar
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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