The panels face exactly south with a 30º inclination. They
are not shaded in any way. The system has a theoretical maximum output of 3·29 kilowatts which at a
latitude of 51·49º and Longitude of 0.13º translates to a predicted 2,830 kilowatt hours per annum.
The average predicted daily output (in kWh) for each month and the achievement is as shown below.
2017 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
153% |
98% |
129% |
125% |
98% |
116% |
107% |
106% |
102% |
107% |
127% |
145% |
2016 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
135% |
134% |
122% |
124% |
113% |
89% |
113% |
122% |
102% |
115% |
132% |
164% |
2015 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
152% |
127% |
131% |
137% |
117% |
118% |
110% |
93% |
116% |
104% |
74% |
124% |
2014 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
151% |
158% |
147% |
123% |
105% |
114% |
122% |
110% |
102% |
115% |
107% |
200% |
2013 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
96% |
104% |
80% |
125% |
102% |
102% |
132% |
121% |
94% |
103% |
127% |
148% |
2012 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
150% |
149% |
142% |
105% |
99% |
94% |
105% |
115% |
129% |
107% |
136% |
152% |
2011 - Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Prediction |
2.51 |
4.27 |
7.32 |
10.05 |
12.04 |
12.7 |
12.1 |
11.34 |
9.29 |
5.94 |
3.45 |
1.83 |
Achievement |
95% |
80% |
117% |
147% |
130% |
111% |
114% |
100% |
125% |
149% |
102% |
175% |
The % figure is extracted dynamically from the source data files each time the
current month’s graphing routines are run. If a graph is produced before the
day has ended the current month’s figure will read low until the graphing
routines are re-run after dark. This can have a significant effect near
the beginning of the month.