# Photovoltaic panel angle

**URL:** <https://community.blackspectacles.com/t/photovoltaic-panel-angle/3347>\
**Category:** Project Development & Documentation\
**Created:** [July 23, 2021, 10:24pm UTC](https://community.blackspectacles.com/t/photovoltaic-panel-angle/3347 "2021-07-23T22:24:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![xurubi](https://blackspectacles.com/uploads/images/22.png) [@xurubi](https://community.blackspectacles.com/u/xurubi)\
**Post date:** [July 23, 2021, 10:24pm UTC](https://community.blackspectacles.com/t/photovoltaic-panel-angle/3347/1 "2021-07-23T22:24:35Z")

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pdd exam -2 ,mc  
“Allowing for panel adjustability, what is the ideal pitch for the roof of a winery”  
the answer is +10 of latitude.  
it refers to BCI, but BCI only indicates"Photovoltaic modules are inclined at an angle as close to the area’s latitude as possible to absorb the maximum amount of solar energy year-round."  
I can only find + 10 degrees for the solar water heater.  
Any one know if this +10 of latitude is correct?

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**Author:** ![coachdarionziegler](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.blackspectacles.com/coachdarionziegler/32/1272_2.png) [@coachdarionziegler](https://community.blackspectacles.com/u/coachdarionziegler)\
**Post date:** [July 26, 2021, 5:49pm UTC](https://community.blackspectacles.com/t/photovoltaic-panel-angle/3347/2 "2021-07-26T17:49:50Z")

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@coachchrishopstock can you please dig into this question and see if you can help @xurubi ?

-Thanks,  
Darion

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**Author:** ![coachchrishopstock](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.blackspectacles.com/coachchrishopstock/32/1662_2.png) [@coachchrishopstock](https://community.blackspectacles.com/u/coachchrishopstock)\
**Post date:** [July 28, 2021, 8:10pm UTC](https://community.blackspectacles.com/t/photovoltaic-panel-angle/3347/3 "2021-07-28T20:10:55Z")

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Hey @xurubi - thanks for brining this to my attention.  
I checked Architectural Graphic Standards (page 762) and they recommend a variety of different angles based on whether the peak load demand is in the summer or winter. They also note that if the degree is within 10-15 degrees of the azimuth, the performance degradation is quite small.  
We’ll revise this question according to the information found in AGS.  
Thanks again and good luck in your studies!