Hardly a big gun but a great month for generation, especially the latter end.
PVGIS estimated figures for March were 262kWh, my generation figures ended up at 385kWh so much higher than anticipated at 147%
Well I haven't been able to report the bumper individual days others have - my best was 20.77kwh on the 27th - but monthly total is fairly respectable :-
From SB logs
01/03/2012 00:00 1248.575
31/03/2012 19:25 1617.29
March Gen 368.7kwh
(92kwh per installed kwp)
I don't actually remember seeing the sun at all today but still managed 5.28kwh.
Roll on April May, June & July - every one of them ought to be better than March and of course my shallow slope gets less of a handicap.
Cashwise, my £12k left in the ISA would have earned £420 in a full year or around £35 per month. March (containing an equinox day) should be an average month but I seem to have earned over £160 (getting on for 5 times as much).
NE Derbyshire.
4kWp S Facing 17.5deg slope (dormer roof).
BEV : Nissan Leaf e+
I've just looked at all my (7.5) months outputs. To break even with leaving our £12k in an ISA, we need to earn £35 per month which was (until this morning) 78kwh / month.
The only month so far in which we didn't do that was December - and even that was 77.8 so we weren't really much out of pocket even then (9 pence ! )
March was a corker here in cider country. PVGIS estimate was 244kWh and we generated 365.1kWh, so 50% above estimate. That equates to 98.7kWh/kWp.
This was despite a rubbish week in the middle where we barely saw the sun for 5 days and only made 17kWh in that period. The last 2 weeks more than made up for it, we only had 2 days in the that period when we didn't break into double figures (and one of those was a 9.9kWh). We set 4 new records during the course of the month.
Until March we were running about 25% ahead of PVGIS. I need to crunch the numbers tomorrow to see how we're doing taking March into account.
April started off today with a new record at 22.155kWh which at the old FIT rates would have been just under £10, but with the uprating it was our first £10+ day at £10.39 (rounding down to 22.1kWh).
Cider Country Solar PV generator: 3.7kWp Enfinity system on unshaded SE (-36deg azimuth) & 45deg roof
I expect if it was possible to get a nice cold breeze and a cloudless sky at this time of year, records would be broken.
This would be more likely in late June, although it depends on your proximity to due south and your pitch. Cold days are not unheard of at that time; remember that day in early August? (Max 12°C in Mansfield!)
Replies
System: 3.58kWp
Total generation: 264kWh
Generation per kWp: 73.74kWh
Go on then wheel out the big guns!
Mart.
For general PV advice please see the PV FAQ thread on the Green & Ethical Board.
PVGIS estimated figures for March were 262kWh, my generation figures ended up at 385kWh so much higher than anticipated at 147%
My system on PVOutput
Record day was 26th March with 23.47kWh
Worst day was 9th March with 1.8kWh
Average for March is 12.423kWh
Generation per kWp - 96.25kWh
What happened at 11:00am on Thursday? The steep rise? Cloud/mist burning off? Or is that when some physical shading ends?
From SB logs
01/03/2012 00:00 1248.575
31/03/2012 19:25 1617.29
March Gen 368.7kwh
(92kwh per installed kwp)
I don't actually remember seeing the sun at all today but still managed 5.28kwh.
Roll on April May, June & July - every one of them ought to be better than March and of course my shallow slope gets less of a handicap.
Cashwise, my £12k left in the ISA would have earned £420 in a full year or around £35 per month. March (containing an equinox day) should be an average month but I seem to have earned over £160 (getting on for 5 times as much).
4kWp S Facing 17.5deg slope (dormer roof).
BEV : Nissan Leaf e+
Here I am on pvoutput.
How did your output compare to PVGIS? I guess PVGIS can't account for shading, so it would be interesting to see how it compares?
I'll be uploading my stats tomorrow evening, but I know we'd beaten PVGIS by 25% as of Wednesday lunchtime.:j
I've just looked at all my (7.5) months outputs. To break even with leaving our £12k in an ISA, we need to earn £35 per month which was (until this morning) 78kwh / month.
The only month so far in which we didn't do that was December - and even that was 77.8 so we weren't really much out of pocket even then (9 pence ! )
Actual monthly results were :-
. . . . . . . . . . . . . . . . . . . . . . . . pvgis
Aug (15 days) 184 . . . . . . . . . . .390 (full month)
Sep 347 . . . . . . . . . . .. . . . . . . .296
Oct 262 . . . . . . . . . . . . . . . . . . . 195
Nov 100 . . . . . . . . . . . . . . . . . . . 100
Dec 77 . . . . . . . . . . . . . . . . . . . . 63.5
Jan 107 . . . . . . . . . . . . . . . . . . . 91.5
Feb 170 . . . . . . . . . . . . . . . . . . 149
Mar 363 . . . . . . .. . . . . . . . . . . . 250
excluding Aug :-
Month . Act . . Pred . %inc rel to pred
Sep . . 347 . . 296 . . 17.23
Oct . . 262 . . 195 . . 34.36
Nov . . 100 . . 100 . . 0.00
Dec . . 77 . . 63.5 . . 21.26
Jan . . 107 . . 91.5 . . 16.94
Feb . . 170 . . 149 . . 14.09
Mar . . 363 . . 250 . . 45.20
Year . . 1426 . .1145 . . 24.54
4kWp S Facing 17.5deg slope (dormer roof).
BEV : Nissan Leaf e+
Total generation for March: 347kWh
Generation per kWp: 99.20kWh
This was despite a rubbish week in the middle where we barely saw the sun for 5 days and only made 17kWh in that period. The last 2 weeks more than made up for it, we only had 2 days in the that period when we didn't break into double figures (and one of those was a 9.9kWh). We set 4 new records during the course of the month.
Until March we were running about 25% ahead of PVGIS. I need to crunch the numbers tomorrow to see how we're doing taking March into account.
April started off today with a new record at 22.155kWh which at the old FIT rates would have been just under £10, but with the uprating it was our first £10+ day at £10.39 (rounding down to 22.1kWh).
This demonstrates just what an incredibly unusual March fortnight we have just enjoyed.
Saturday's dismal performance was actually quadrupled on Sunday, giving me an unexpected record of 22.08 kWh.