Design

[chris101]

I am early onto my PV journey and trying to figure out how many Panels I can get on my roofs!

I have attached the diagram that looks to me most likely achievable however I still have reservations on the design due to the blue highlighted ridge line (around 20cm tall) which could/will cause shading?

The 1st dormer flat roof is on a higher level to the 2nd rear dormer flat roof as well, please see attached photo's.
What is the maximum amount of panels I can install?
Is there any way of getting an accurate survey done?

Roof estimated sizes are -
Roof 1 - 490cm by 270cm (velux windows are 60cm by 60cm)
Roof 2 - 495cm by 320cm
Roof 3 - 285cm by 260cm
Roof 4 - 360cm by 300cm (Velux window 150cm by 130cm)

Any suggestions from experienced eyes to see how many panels I could install and maximum output.
My annual usage is around 6000kWh annually/Daily 12-15kWh

 

[Supervstech]

I am early onto my PV journey and trying to figure out how many Panels I can get on my roofs!

I have attached the diagram that looks to me most likely achievable however I still have reservations on the design due to the blue highlighted ridge line (around 20cm tall) which could/will cause shading?

The 1st dormer flat roof is on a higher level to the 2nd rear dormer flat roof as well, please see attached photo's.
What is the maximum amount of panels I can install?
Is there any way of getting an accurate survey done?

Roof estimated sizes are -
Roof 1 - 490cm by 270cm (velux windows are 60cm by 60cm)
Roof 2 - 495cm by 320cm
Roof 3 - 285cm by 260cm
Roof 4 - 360cm by 300cm (Velux window 150cm by 130cm)

Any suggestions from experienced eyes to see how many panels I could install and maximum output.
My annual usage is around 6000kWh/Daily 12-15kWh

I was very surprised reading your post seeing 6000kWh daily… then I re read it.., WOW.

Anyway… I would think since it is a flat roof, you would want a structure built to get good angle for the panels. Looks like the shadow is coming from North in your photo, what part of the earth are you on?

 

[Supervstech]

I suppose the pic is in late afternoon if you are in London.
As far north as London is, you likely need a steep angle for best irradiance.

 

[chris101]

I suppose the pic is in late afternoon if you are in London.
As far north as London is, you likely need a steep angle for best irradiance.

London, UK and yes the pic was taken around 7pm UK time