PV Results to September 2016

This summer was very warm and clear with very little rain. We had a great solar summer! Looking at the 2016 column, the solar panel productivity was very high, much higher than any other comparable month. However, this is also influenced by the re-wiring that our solar contractor did on 19 April. If you look at the table below, the productivity values were good but not great. Apparently the one string with 6 panels facing SW were not producing as much as they could have - they were being curtailed by the panels to the SE. When the SE panels started decreasing output after noon hour, the SW panels should have been increasing. I monitored the output and it didn't seem as much as it should have been. After 19 April, it appeared to me that the SW panels performed better. I did this comparison by examining output on separate clear blue sky days before and after the changes. I know that no two days are alike, but it seemed to have improved.
However, over the summer, over this summer the productivity was greater than 4.4, even as high as 5.0 kWhrs/kW installed. Very clear skies!

		Years
Date	Data	2010	2011	2012	2013	2014	2015	2016	Total Result
Jan	Sum - Daily kWhr		170	256	243	216	281	210	1374
	Average - Efficiency [kWhr/kW]		0.9	1.3	1.2	1.1	1.4	1.1	1.2
Feb	Sum - Daily kWhr		275	323	214	197	333	312	1652
	Average - Efficiency [kWhr/kW]		1.5	1.7	1.2	1.1	1.9	1.7	1.5
Mar	Sum - Daily kWhr		561	569	499	577	663	483	3352
	Average - Efficiency [kWhr/kW]		2.8	2.9	2.5	2.9	3.3	2.4	2.8
Apr	Sum - Daily kWhr		493	626	574	615	656	699	3661
	Average - Efficiency [kWhr/kW]		2.6	3.3	3.0	3.2	3.4	3.6	3.2
May	Sum - Daily kWhr		534	758	768	699	745	875	4378
	Average - Efficiency [kWhr/kW]		2.7	3.8	3.9	3.5	3.8	4.4	3.7
Jun	Sum - Daily kWhr		707	715	633	757	687	965	4464
	Average - Efficiency [kWhr/kW]		3.7	3.7	3.3	3.9	3.6	5.0	3.9
Jul	Sum - Daily kWhr		769	762	693	735	821	889	4669
	Average - Efficiency [kWhr/kW]		3.9	3.8	3.5	3.7	4.1	4.5	3.9
Aug	Sum - Daily kWhr	164	658	720	711	694	693	876	4515
	Average - Efficiency [kWhr/kW]	3.2	3.3	3.6	3.7	3.5	3.5	4.4	3.7
Sep	Sum - Daily kWhr	438	528	600		626	625	743	3560
	Average - Efficiency [kWhr/kW]	2.3	2.8	3.1		3.3	3.3	3.9	3.1
Oct	Sum - Daily kWhr	450	391	338	79	381	455		2093
	Average - Efficiency [kWhr/kW]	2.3	1.9	1.7	1.8	1.9	2.3		2.0
Nov	Sum - Daily kWhr	355	316	286	296	177	334		1765
	Average - Efficiency [kWhr/kW]	1.9	1.6	1.5	1.5	0.9	1.7		1.5
Dec	Sum - Daily kWhr	78	220	144	119	169	148		877
	Average - Efficiency [kWhr/kW]	0.4	1.1	0.7	0.6	0.8	0.7		0.7
Total Sum - Daily kWhr		1486	5623	6096	4828	5841	6439	6050	36363
Total Average - Efficiency [kWhr/kW]		1.8	2.4	2.6	2.4	2.5	2.8	3.5	2.6