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Renewables: "talking 'bout my generation"
Comments
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I`ve asked the question on here before of how age impacts on efficiency, and looking at all the newcomers generations over the last week or so I think it`s obvious these systems decline in time. Either that or the newer technology is far superior. The recent scores on here for the `newbies` are far superior to mine and the more mature posters on here.
Example..?..
2.5 kWp PV system, SSW facing, 45 Deg Roof. ABB Inverter, Monitor: 'Wattson'.
Reg. for FIT Nov 2011. "It's not what you generate; it's how you use it that matters". One very clean Vauxhall Diesel Sri, £30.00 Road Tax:
Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).0 -
Personally, I think the numbers speak for themselves. If you look back over the last few pages you can easily compare the newer systems to those of us who have been here for years.3.975 kWp System, South facing, 21 degree pitch, 15 x Canadian Solar Elps, Samil Inverter, location NE Scotland (Fraserburgh) Bring on the Sun :beer:0
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Personally, I think the numbers speak for themselves. If you look back over the last few pages you can easily compare the newer systems to those of us who have been here for years.
Don't forget panel pitch. Oscar and rodee13 (just chosen as they have pitches stated and are steep(ish)) have good results, mine are fairly rubbish with 20d and 30d pitches, though mine suffers from orientation as well.
Those with 50d south facing pitches will be getting great results Feb to Apr.
Mart.Mart. Cardiff. 8.72 kWp PV systems (2.12 SSW 4.6 ESE & 2.0 WNW). 28kWh battery storage. Two A2A units for cleaner heating. Two BEV's for cleaner driving.
For general PV advice please see the PV FAQ thread on the Green & Ethical Board.0 -
Its difficult to compare since there are lots of factors but like for like yes its a combination of age and newer tech. Panels degrade around 3-4% after 1st year and then its 0.5 to 0.8% every year after that. Also new technology like PERC improves efficiency. (http://www.greentechmedia.com/articles/read/PERC-Solar-Cell-Technology-Gaining-Ground-in-2014). These are nevertheless small factors which wouldn't even be noticed (not in a 5 year period) since the main factors are things like weather, shade, pitch etc which you cant really compare even with your neighbor let alone someone from here. One other main factor is the inverter which does degrade slowly and the newer ones are more efficient in converting DC to AC.3.99KW SunEdison (14 * 285W) all black, SolarEdge inverter, iBoost+, 27 Oct 2015, London
(40° tilt, 25° East from South, some tree shading from mid Oct to mid March)0 -
1.81 O's for me, more clouds than sun in licolnshire today3.13 kWp system, south facing, East Coast lincolnshire. Installed dec 20150
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1.91 O's today, more cloud than sun though.3.96 kWp System, SSE Facing, 30 Degree Pitch, 12 x 330W BenQ Panels, Solar Edge Inverter, Lincoln, Lincolnshire. Installed 26th May 2015.0
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We are almost at 50% for the month which isn't bad given we are in an increasing sun hours month. I hope the reason that other newbies are outscoring me is because angle and aspect make a bigger difference at this time of year?I think....0
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Personally, I think the numbers speak for themselves. If you look back over the last few pages you can easily compare the newer systems to those of us who have been here for years.
Well, I am quite happy with my numbers taking into account the weather, time of year etc etc. Am I worried? Nah, panels are performing well above expectations and much better than install prediction......
Generation since install = 4,187.28 O's.
Pay Back on outlay has reached 71.45% (excluding savings on Electric bills) was forecast to take 6.5 years including savings on electric.
The last 3 months of poor weather has shown me the contribution a PV system makes.
My panels must have degraded overnight, as I only did 1.48 O's today..:eek:........ 2.5 kWp PV system, SSW facing, 45 Deg Roof. ABB Inverter, Monitor: 'Wattson'.
Reg. for FIT Nov 2011. "It's not what you generate; it's how you use it that matters". One very clean Vauxhall Diesel Sri, £30.00 Road Tax:
Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).0 -
1.24 O's
I think some big bird must have come and taken a dump on my panels. Not even arf of yesterdays score!
Now off for
3.795 kWp Solar PV System. Capital of the Wolds0 -
1.24 O's
I think some big bird must have come and taken a dump on my panels. Not even arf of yesterdays score!
Now off for
Same here....for the last 3 months:eek:
1.35 O's here today:)16 Sanyo Hit 250s.4kWp SMA 3.8kWp inverter. SW roof. 28° pitch. Minimal shade. Nov 2011 install. Hybrid car. Ripple Kirk Hill. N.E Lincs Coast.0
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