my small off grid solar shed

[pellicle]

Hi

I have been planning this for some time and now its come together.

the inside parts

the major components for this are:

• 250W panel (32v) = $20
• MPPT solar charge controller = $40
• 2x RC95 lead acid car batteries @$90 = $180
• 2000W (4000peak) inverter = $240
• sundry wiring

and more full details on my blog for those interested

over paneled

Well its been a lot in planning and significant preparation and then construction but my " shed project " has finally made it to "solar shed...

cjeastwd.blogspot.com

*note: not selling anything there, no links to any purchase locations, just the descriptions.

I hope this gives anyone thinking of dipping in a finger some good inspiration.

 

[pollenface]

The car batteries should work okay if you're mainly using your shed during the day time, they're not really durable when it comes to cycling more than a 10% depth of discharge.

 

[WYtreasure]

Are you concerned with overpaneling?

 

[pellicle]

Are you concerned with overpaneling? View attachment 86232

Waste not want not

PS When we can get 250W from that footprint I anticipate energy problems will largely go away ...

 

[pellicle]

The car batteries should work okay if you're mainly using your shed during the day time, they're not really durable when it comes to cycling more than a 10% depth of discharge.

Agreed, the details backing my decision are in the blog post.

There will likely be some experiments occurring too ?

 

[WYtreasure]

Agreed, the details backing my decision are in the blog post.

There will likely be some experiments occurring too ?

From the looks of your blog you've been experimenting for quite some time. Nice bat cave you made for the bat save, a decade ago.

 

[pellicle]

Nice bat cave you made for the bat save, a decade ago.

thanks ... one does what one needs to do to keep one's wife happy

 

[Substrate]

My only thoughts are about heat degradation of output being so closely mounted to a hot tin roof.

Not only are the panels getting overly hot during the summer, but the bypass diodes in the junction box on the back can also be cooking.

If you can, I'd at least see if you can angle it more and get a few more inches higher on the panels to allow for heat dissapation. Possibly drill a few holes in the aluminum top edge to allow for heat to escape if you can't angle them higher.