Renewables: "talking 'bout my generation"

Martyn1981

Dave_Fowler wrote: »

System 1: 4.92 kWh System 2: 4.81 kWh.

Hardly any difference between the systems today. Lower roof angle on system 2 reduced peak power around noon. Clear and sunny most of morning but cloudy most of afternoon.

Hiya Dave. I know it's way, way, way too early to jump to conclusions, but for the shallow(er) pitch system 2 to match system 1, seems pretty impressive, in fact that means it did much better. Next job for you is to work out what date is mid way for both systems (ie perfect for a 33deg roof pitch) then see which one 'wins'?

My SE system has matched PVGIS climate expectations Aug, Sep, Oct & Nov, despite various shading issues, and with average sunshine, so I'm slowly starting to think that the power optimisers do, do what they say on the tin - fingers crossed!

Mart.

Dave_Fowler

Martyn1981 wrote: »

Hiya Dave. I know it's way, way, way too early to jump to conclusions, but for the shallow(er) pitch system 2 to match system 1, seems pretty impressive, in fact that means it did much better. Next job for you is to work out what date is mid way for both systems (ie perfect for a 33deg roof pitch) then see which one 'wins'?

My SE system has matched PVGIS climate expectations Aug, Sep, Oct & Nov, despite various shading issues, and with average sunshine, so I'm slowly starting to think that the power optimisers do, do what they say on the tin - fingers crossed!

Mart.

According to PVGIS, April and September will be the months where the two systems should have similar outputs. But there is much more to it than that. At the moment the trees and the house do not shade system 2, but by the summer there will be early morning shade from the large beech trees to the East and in early evening from my house to the WSW.

System 1 is always shaded in the morning by a short chimney on the house. During summer the effect of this is reduced as the sun is much higher in the sky and the shadow is quite short.

Dave F

Dave_Fowler

System 1: 2.25 kWh
System 2: 2.30 kWh
Cold & cloudy most of the day after a good bright start.

shafeeq

3.92kwh today.. beating yesterdays... rain tomorrow ...

John_Pierpoint

2.00 kWh from a 3.6 kWp inverter overlooking the Thames Estuary.

Worst result since some dark day in November.

legoman62

4.6 kWh for me.
Final 2 weeks of last year were the worst I've had (26kWh total)
On target to beat the month...fingers crossed;)

EricMears

legoman62 wrote: »

4.6 kWh for me.
Final 2 weeks of last year were the worst I've had (26kWh total)
On target to beat the month...fingers crossed;)

Final two weeks of year ought to be worst two weeks any of us have - it includes a few days before Winter Solstice and a week and a bit after it !

Or have you been ultra-scientific and calculated it as a percentage of your PVGIS expectation ?

FWIW, my PVGIS forecast for Dec. is 64 kWh and I'm already on 55. Whole of Dec. last year was 77. Barring a lot of really awful days, I'm expecting this month to beat both PVGIS & Dec-2011

Oscargrouch

2.5 kWh today.
24.39% saving on the Leccy since 1st Dec - date.
Used: 113kW; meter moved up by 86kW.
9 more days to the glorious 22nd; on the way up from there on...:T

[Deleted User]

Dunno what mine is, probably a big fat zero as panels covered in ice/frost.

When leaving for work this morning the snow was coming down so probably covered in snow now too :rotfl:

Suspect generation will be lower than Dec last year.

Dave_Fowler

Lowest power output day for ages. Cloud and rain all day. Systems did not wake up till after 10am.
System 1: 0.126kWh
System 2: 0.087kWh
Forecast is better for tomorrow - can't be much worse.