User avatar
Boomer23
Posts: 3550
Joined: Sun May 23, 2010 9:57 pm
Delivery Date: 30 Mar 2011
Location: Orange County, CA

Re: Our solar production

Wed Apr 30, 2014 11:36 pm

Low rainfall has a flip side: Best solar April in the eight years that I have had our system. 843 kWh solar production in Orange County CA from a 5.16 kW system on south facing roof. This April barely topped April 2008 by 1 kWh, when the panels were just a year old and much cleaner.

Given the choice, I'd take a rainy April.
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SilverLeaf
Posts: 418
Joined: Tue Apr 20, 2010 4:55 pm
Delivery Date: 17 Apr 2011
Leaf Number: 000516
Location: Scottsdale, AZ

Re: Our solar production

Thu May 01, 2014 2:55 pm

Production from my 33 230wDC Sunpower Panels via Sunnyboy (SMA) 7000US Inverter (7.59kW DC)

2014 AC Production
Jan 1048
Feb 977
Mar 1347
Apr 1438

2013 AC Production
Jan 910
Feb 1105
Mar 1328
Apr 1444
May 1474
Jun 1447
Jul 1284
Aug 1230
Sep 1280
Oct 1050
Nov 955
Dec 1005

2012 AC Production
Mar 1228
Apr 1217
May 1416
Jun 1325
Jul 1189
Aug 1168
Sep 1118
Oct 603
Nov 970
Dec 851

Link to my Solar Production - http://pvpwrev.webs.com/" onclick="window.open(this.href);return false;
Reserved 4/20/2010
Ordered 9/2/2010
Arrived 4/17/2011
Installed 5.52 kW PV 2/2011
Upgraded PV to 6.9 kW 2/2012
Upgraded PV to 7.59 kW 2/2013

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mwalsh
Posts: 9644
Joined: Thu Apr 22, 2010 10:10 am
Delivery Date: 05 Jan 2011
Leaf Number: 0213
Location: Garden Grove, CA

Re: Our solar production

Thu May 01, 2014 3:40 pm

Boomer23 wrote:Low rainfall has a flip side: Best solar April in the eight years that I have had our system. 843 kWh solar production in Orange County CA from a 5.16 kW system on south facing roof. This April barely topped April 2008 by 1 kWh, when the panels were just a year old and much cleaner.

Given the choice, I'd take a rainy April.
Monthly production is up for April. But peak daily production is down slightly, and the months prior during this winter/spring have not been spectacular. Think I need to get me on the roof and clean the panels in the absence of any natural help.

Code: Select all

Total kWh Jan    Feb    March  April   May     June   July    August  Sept   Oct    Nov    Dec    Total
2010                                                                                       198.76 198.76
2011      623.61 718.29 900.88 998.07  1063.21 988.45 1112.21 1113.42 873.14 806.53 571.08 601.73 10370.62
2012      623.33 710.72 897.53 1009.51 1060.92 994.92 1027.26 1048.68 968.03 774.73 552.08 451.35 10119.06
2013      631.15 698.26 922.13 929.33  1052.76 971.27 978.93  1079.56 945.70 775.43 561.88 592.58 10138.98
2014      571.84 622.83 886.12 1031.34
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RegGuheert
Posts: 6419
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: Our solar production

Thu May 01, 2014 4:54 pm

mwalsh wrote:Think I need to get me on the roof and clean the panels in the absence of any natural help.
Yeah, drought cannot be great for PV production, even if you get lots of sunshine. I've decided that the best cleaner for our panels is sleet. As it slides off the panels, it scrubs the surface quite well! Snow also works, but last winter the first frozen precipitation was just snow and the grime on the panels was enough to keep the snow from shedding!
RegGuheert
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User avatar
Boomer23
Posts: 3550
Joined: Sun May 23, 2010 9:57 pm
Delivery Date: 30 Mar 2011
Location: Orange County, CA

Re: Our solar production

Thu May 01, 2014 5:00 pm

RegGuheert wrote:
mwalsh wrote:Think I need to get me on the roof and clean the panels in the absence of any natural help.
Yeah, drought cannot be great for PV production, even if you get lots :) of sunshine. I've decided that the best cleaner for our panels is sleet. As it slides off the panels, it scrubs the surface quite well! Snow also works, but last winter the first frozen precipitation was just snow and the grime on the panels was enough to keep the snow from shedding!
I'm now praying for sleet. :)
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smkettner
Posts: 7380
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: Our solar production

Thu May 01, 2014 6:00 pm

Boomer23 wrote:I'm now praying for sleet. :)
In OC? :lol: Lucky to get 4 minutes of hail in 10 years. ;)
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dgpcolorado
Posts: 3116
Joined: Sat Aug 20, 2011 1:56 pm
Delivery Date: 15 Dec 2011
Location: The Western Slope, Colorado

Re: Our solar production

Fri May 02, 2014 6:32 am

I was surprised to find that April had the lowest production in the six years I've been keeping track. Although it was rather cloudy and snowy, that seems pretty normal for April here in the mountains.

I am getting tired of pulling snow off the panels — it's spring, time for rain! When I have them at pitch angles of 25º and 15º (the current angle) I have to get a step ladder out to reach high enough with my squeegee on a 16 foot pole. Much easier in fall and winter when I have the panels at angles of 45º and 55º and the snow usually slides right off with just a bit of a tug.

[April 2012 had the highest production because it was part of driest spring I've seen in my thirty years in Colorado: no measurable precipitation; very unusual.]

Code: Select all

Results for April for the last six years:

                Old panels   Old+New panels
               (700 Watts)   (2170 Watts)
April 2014         93 kWh       262 kWh
April 2013        100 kWh       282 kWh
April 2012        107 kWh
April 2011         95 kWh
April 2010        105 kWh
April 2009         99 kWh
As it happens, yesterday, May 1st, was one of the highest production days I've seen in a year: cold, sunny, with some cloud edge effect.
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User avatar
SilverLeaf
Posts: 418
Joined: Tue Apr 20, 2010 4:55 pm
Delivery Date: 17 Apr 2011
Leaf Number: 000516
Location: Scottsdale, AZ

Re: Our solar production

Sun Jun 01, 2014 8:51 am

Production from my 33 230wDC Sunpower Panels via Sunnyboy (SMA) 7000US Inverter (7.59kW DC)

2014 AC Production
Jan 1048
Feb 977
Mar 1347
Apr 1438
May 1476

2013 AC Production
Jan 910
Feb 1105
Mar 1328
Apr 1444
May 1474
Jun 1447
Jul 1284
Aug 1230
Sep 1280
Oct 1050
Nov 955
Dec 1005

2012 AC Production
Mar 1228
Apr 1217
May 1416
Jun 1325
Jul 1189
Aug 1168
Sep 1118
Oct 603
Nov 970
Dec 851

Link to my Solar Production - http://pvpwrev.webs.com/" onclick="window.open(this.href);return false;
Reserved 4/20/2010
Ordered 9/2/2010
Arrived 4/17/2011
Installed 5.52 kW PV 2/2011
Upgraded PV to 6.9 kW 2/2012
Upgraded PV to 7.59 kW 2/2013

pchilds
Posts: 418
Joined: Sun Jun 17, 2012 12:14 am
Delivery Date: 31 Jul 2011
Leaf Number: 006141
Location: SoCal

Re: Our solar production

Sun Jun 01, 2014 10:01 am

March 2014, 529.6 kWh
April 2014, 554.6 kWh
May 2014, 606.8 kWh
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User avatar
dgpcolorado
Posts: 3116
Joined: Sat Aug 20, 2011 1:56 pm
Delivery Date: 15 Dec 2011
Location: The Western Slope, Colorado

Re: Our solar production

Sun Jun 01, 2014 12:40 pm

May is usually one of the best production months here because of long days plus cooler temperatures than summer, but the output was down 7% from last May and on the low side for the month in the six years I've been tracking it. One of the reasons was a lot of rain/snow in the middle and the end of the month and that precipitation was very welcome — the spring wildflowers are loving it (the lupines and locoweeds are very showy today)! [And the wildfire danger is much reduced for now.]

Code: Select all

Results for May for the last six years:

                Old panels   Old+New panels
               (700 Watts)   (2170 Watts)
May 2014          111 kWh       313 kWh
May 2013          119 kWh       338 kWh
May 2012          127 kWh
May 2011          111 kWh
May 2010          122 kWh
May 2009          108 kWh
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