Solar Panel Generation Statistics – May 2012

South, South-East statistics table shows that during the month of May 2012 my 2kW Sanyo PV array yielded 281.91kWs of electricity, averaging 9.09kWs per day. Also on the 26th May the system generated its highest daily yield so far of 14.77kWs.

May 2012 Statistics South, South-East

The East-West Split statistics table shows a great set of figures for the month with a total solar panel  yield of 310.20kWs, averaging 10.01kWs per day. It also saw a new highest solar daily yield of 14.47kWs from the SunPower E19 solar panels.

May 2012 Statistics East, West Split


Solar Panel Generation Statistics – April 2012

April 2012, although a wet month, saw my South, South-East generation solar statistics continue to increase. March as reported provided a real kick start to the harvesting figures and April has seen another good month. I did feel however that there would have been a bigger growth than that achieved for the month, but I guess it was the wettest April for years and the last week of March provided such a boost!

I can’t complain with any of the recent harvest figures because my yield rates are now exceeding my overall expectations from what I experienced at the start of my journey.

The East-West Split system is also continuing to increase its yield and is looking like being quite a productive system especially now that the longer days are here with the bright sunny evening skies.

I’ve included both solar system statistics tables in this month’s blog report to view and compare.

Solar Panel Generation Statistics – April 2012 (South, South-East)

South, South-East statistics table shows that during the month of April 2012 my Sanyo solar panel array yielded 210.32kWs of electricity from the sun, averaging 7.01kWs per day. I also have a new highest solar panel daily yield of 12.87kWs.

Solar Panel Generation Statistics – April 2012 (East-West Split)East-West Split statistics table shows that during the month of April 2012 the solar panel array yielded 207.32kWs of electricity, averaging 6.91kWs per day. It also saw a new highest solar daily yield of 11.41kWs from the SunPower solar panels.

Solar Electric Generation – February Stats – East West Split

Late again, but here are the east-west solar array split’s February generation statistics. These stats are from the 2.64kW system, which employs SunPower 240kW E19 Series solar panels with SolarEdge power optimisers.

I expect that some of the more keener viewers of this site will have spotted that I have not reported on part of January. I was reporting on each month from the installation date. However from this month on to make solar generation statistics a little clearer I have started by reporting by calendar month. This will make comparison against the south, south-east system easier to compare. I will try to add the missing January statistics later.

East-West split solar generation stats for February 2012The electricity generation statistics are for the period from February 1st to 29th. During this second reported month the system harvested just over 91.2 kW of electricity, averaging 3.15 kW per day. The chart also shows the highest day of generation at 6.71 kW.

Solar PV System Specifications

This week has seen the addition of a new fixed page to the blog – the Solar system specification section. This page can be found direct from the main links at the top of any page and will hopefully serve as a quick look-up and reference for anyone wanting to know the specification of my South, South East facing solar pv array. As my blog has also been featuring my fathers East-west split solar system, I have also included this specification too.

Arrival of the FITs Contract

The SSE energy supply contract arrived today, but not for my system. Although the solar panel array was installed two weeks later than that of my own, it was my father’s feed-in tariff agreement (FIT) that was received in the post this morning.

The agreement came with a covering letter thanking him for appointing Scottish & Southern Electric as his FIT licensee. The document confirms that he has been registered for the FIT scheme with two copies of the contract to sign. One to be retained and the other to be returned as soon as possible in an enclosed pre-paid envelope.

Also stated within the communication are the submission dates that the meter readings must be taken and conveyed. This is the reading from the generation meter that records all yielded electricity from the sun. It is to be read and submitted to enable quarterly payments for FITs generation and export. These figures can be emailed or phoned through on or around the required dates.

Solar Panel Generation – First Month Stats – East West Split

A little late publishing, but here are the first month’s generation statistics for the east-west split solar panel array. These stats are for my father’s 2.64kW system, which employs SunPower 240kW E19 Series solar panels with SolarEdge power optimisers fitted.

These statistics are the very first shown for the east-west system that was installed on 7th December 2011. After all the upheaval and agitation that he has endured over the previous month it’s rather nice to blog about something a little more interesting than installation problems.

Like my own, my father’s expectations were a lot higher than that of the received yield of solar generated electric. Having an installation in December is probable not the best idea if you want to receive instant encouragement and return from your system. After all this was now the darkest and gloomiest days of the year.

When reviewing my first solar harvesting statistics I had nothing to compare with. Seeing these now, although comparison is still very liberal due to the split array and differing size systems, it nonetheless offers some interesting similarities and solar array personalities.

What stands out when comparing these solar generation statistics to that of south, south-east system in particular at this stage is that the east-west split seems to harvest more on dull days. Obviously I can’t compare like for like but I believe that this slight improvement on certain days is down to the power optimisers. Overall the near south facing array trounces the split system during these shorter days, but once the longer days arrive the east-west split should come into its own. It should be rather interesting comparing in the months to come!

East-west split solar array first month's statistics

The electricity generation statistics are for the period from 8th December to 7th January 2012. During this first month the system harvested just over 37.5 kW of electricity, averaging 1.21 kW per day. The chart also shows the highest spike of generation hitting at 2.51 kW.

Loose Solar Panels

An email was sent off to the installers reporting the damaged panels on the 27/12/11. But due to the Christmas and New Year holidays an auto out of office reply email was received saying that they were closed until January 3rd. There was an emergency telephone number if required.

Further problems were to be experienced on the 29/12/11. From this date the weather conditions changed to high winds which seemed to caused all sorts of rattles above my fathers bedroom under the east solar array. An additional email was subsequently sent off on the 30th reporting these new issues and requesting an experienced installer to visit as soon as possible and investigate the noises.

Over the weekend of 31st December and 1st January while visiting my parents I found my father looking very tired and apprehensive. He said that he had not been getting very much sleep due to the the noise on the roof. He also said that on occasions he was now also hearing banging sounds which were very disruptive. Although it was not quite as windy now as it had been on the previous couple of evenings, I had a look up at the east facing panels from the end of the garden. I could see nothing alarming or untoward from this distance. However, I could see some loose cabling under the right hand panel, maybe this was flapping around and causing the noises!

On Tuesday 3rd January, the installation company was back in touch and were arranging for their installations supervisor to visit and check the reported problems. He arrived mid-afternoon today, 4th January and started by investigating the noises coming from the roof on the east side. On inspection of both the east and west arrays, he found that 3 of the east facing solar panels were loose and not clamped tightly which was causing them to lift and bang down in the wind. This was immediately rectified together with the securing of loose wires under the panels with cable ties. One of the solar panels had to be removed completely to allow access to a roof tile that had not been refitted correctly at the time of installation. Finally, the scratched solar panels were found to be only surface marks and cleaned accordingly.