Best angle for these days (winter solstice) is latitude plus 15 deg. So for me that's 45 + 15 = 60 deg up from horizontal.
I did.I thought he meant like landscape vs. portraitwho knows?!
Why should the best angle be latitude plus 15 deg? wanna know more about this...Best angle for these days (winter solstice) is latitude plus 15 deg. So for me that's 45 + 15 = 60 deg up from horizontal.
In a nutshell, because the earth tilts, seasonally.Why should the best angle be latitude plus 15 deg? wanna know more about this...
I wonder why more installations don't have landscape orientation since most shading I see creeps from bottom to top. Might have something to do with more holes in the roof or longer mounting rails.If you have shading that creeps in from the top or the bottom of the array, landscape is best.
Here's an example:
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Unless the trees are on the neighbor's land. Then you need to be tactful.Get a chainsaw and eliminate the shading.![]()
The worst tree problems I see are the ones from the HOA. A south facing roof at the adage of the HOA with Palm trees that have grown 40’ high over the years since the installation. I wonder what the winter production is on those.Unless the trees are on the neighbor's land. Then you need to be tactful.
This is why my panels are landscape, in winter, there is shading on the top row, and I only lose a little bit of power instead of the entire row.If you have shading across your panels, if it comes in from the side, portrait will result in more production.
If you have shading that creeps in from the top or the bottom of the array, landscape is best.
Here's an example:
View attachment 184340
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Why should the best angle be latitude plus 15 deg? wanna know more about this...
Unless the trees are on the neighbor's land. Then you need to betactfulstealthy.
I wonder why more installations don't have landscape orientation since most shading I see creeps from bottom to top. Might have something to do with more holes in the roof or longer mounting rails.
This is why my panels are landscape, in winter, there is shading on the top row, and I only lose a little bit of power instead of the entire row.
Having the short edge parallel to rails minimizes cost.I wonder why more installations don't have landscape orientation since most shading I see creeps from bottom to top. Might have something to do with more holes in the roof or longer mounting rails.
Landscape is OK but never hang the panel upside down! All the electricity will fall out and pool on the ground. Shock hazard.We're going way off topic here.... the OP was asking about portrait vs. landscape
I would think whatever it should be, Mid winter and mid summer would be a good average. There's a great app called "Solar Tilt" that you can choose any day of the year at your location, or any chosen location,. Picking the longest day or shortest day is only going to be correct on those days. this app has a built in GPS and inclinometer that you can use by setting the long edge of your phone on the face of the panel for pretty accurate angle setting. It's a free app. I highly recommend it.According to this guy, it's closer to 20°, and I tend to agree with him.
Thanks for that. Just downloaded and added to my solar tools group on my phone!I would think whatever it should be, Mid winter and mid summer would be a good average. There's a great app called "Solar Tilt" that you can choose any day of the year at your location, or any chosen location,. Picking the longest day or shortest day is only going to be correct on those days. this app has a built in GPS and inclinometer that you can use by setting the long edge of your phone on the face of the panel for pretty accurate angle setting. It's a free app. I highly recommend it.
Does that hold true for our members in the southern hemisphere?Landscape is OK but never hang the panel upside down! All the electricity will fall out and pool on the ground. Shock hazard.