NE/SW Installation

[jason121]

Yes. Dansk said PVSOL can do twin trackers any ideas ?

 

[SolarCity]

Okay, first of all the inverter looks a bit undersized.

Anyway, I get a yield of 2,898kWh from that setup using Sleaford's climate data.

That works out at 1,696kWh from the south west array and 1,202kWh on the north east array.

For comparison reasons, if the inverter was changed for an Aurora 3.6 then the yield comes in at 2,878kWh - which surprised me and shows the importance of sizing inverters correctly.

For further comparison, to get a good idea of how 10 degrees towards north affects the yield, I also modelled this with 8 panels on both sides - the yield comes in at 2,881kWh with the SW array coming in at 1,506kWh and the NE array coming in at 1,375kWh.

The figures definitely seem to be stacking up.

 

[jason121]

That's help me a lot thank you. The building is 7.7m long so I would like to do 8 and 8 split but will look odd on the roof.

 

[SolarCity]

The more panels you get on the south west roof, the yield increases (Maybe stating the obvious but from the figures I've posted, it seems to have a pretty big effect)

 

[jason121]

I don't wont to lower the voltage on the NE to much so its a compromise between the two

 

[jason121]

Thanks guys for all your input, especially solarcity cheers, next round on me.

 

[Ian-LS]

Agree should be about 75% of a perfectly south facing roof with no shading. Only 5% worse than a directly east facing roof.