4 kW PV Installation

Technical Information:-

PV Output: 3.96kWp
Gross/Active PV Surface Area: 28.8m2
Panels: 22 No. Sharp NU-180E1
Inclination: 20 degrees
Direction: Southwest on a flatroof
Inverter: Power One PVI-3,6-OUTD-UK

Detached 4/5 bed, two kitchens, two bathrooms, 3 adults and 1 five year old (Granny Flat)

Location: North Wales Coast (UK) 53 degrees

PV Generation from the 16th July 2010 to 15th July 2011 (Full Year) - 3511 kWh giving 887 kWh/kWp - max. 29 kWh min. 0.5 kWh in one day.

YEAR 1 - 3,511 kWh - income circa £1,700 (FiT, export electricity & electricity not purchased)

July 16th 2010 - 210 kWh - mean of 13.1 kWh per day (16 days only)
Aug 2010 - 422 kWh - mean of 13.6 kWh per day
Sept 2010 - 296 kWh - mean of 9.9 kWh per day
Oct 2010 - 144 kWh - mean of 4.6 kWh per day (Partial shading from Oct)
Nov 2010 - 58 kWh - mean of 1.9 kWh per day (comprehensive shading)
Dec 2010 - 34 kWh - mean of 1.1 kWh per day (comprehensive shading)
Jan 2011 - 47 kWh - mean of 1.5 kWh per day (comprehensive shading)
Feb 2011 - 107 kWh - mean of 3.8 kWh per day (Partial shading)
Mar 2011 - 317 kWh - mean of 10.6 kWh per day
Apr 2011 - 466 kWh - mean of 15.5 kWh per day
May 2011 - 514 kWh - mean of 16.6 kWh per day
June 2011 - 583 kWh – mean of 19.4 kWh per day
July 15th 2011 - 313 kWh - mean of 20.9 kWh per day (15 days only)

YEAR 2

July 16th 2011 - 260 kWh - mean of 16.25 kWh per day (16 days only)
Aug 2011 - 391 kWh - mean of 12.6 kWh per day
Sept 2011 - 277 kWh - mean of 9.2 kWh per day
Oct 2011 - 134 kWh - mean of 4.3 kWh per day (Partial shading from Oct)
Nov 2011 - 65 kWh - mean of 2.2 kWh per day (comprehensive shading)
Dec 2011 - 30 kWh - mean of 0.97 kWh per day (comprehensive shading)
Jan 2012 - 47 kWh - mean of 1.52 kWh per day (comprehensive shading)
Feb 2012 - 104 kWh - mean of 3.59 kWh per day (Partial shading) (29 day month)
Mar 2012 - 295 kWh - mean of 9.52 kWh per day
Apr 2012 - ? kWh - mean of kWh per day
May 2011 - ? kWh - mean of kWh per day
June 2012 - ? kWh – mean of kWh per day
July 15th 2012 - ? kWh - mean of kWh per day (15 days only)

Feed in Tariff @ 41.3p kWh until 31/03/11 increased to 43.3p from 01/04/11

Running total payment from British Gas = £1,957.42 to 30/09/11

24/09/10 - £284.63 (from 16/07/10)
30/12/10 - £176.34
31/03/11 - £238.40
30/06/11 - £701.01
30/09/11 - £557.04 (to 30/09/11)