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My Installation

 

Summary

Solar PV (photo voltaic) panels were my choice of installation as I'd always had an interest in the technology and with my house having a due South facing roof, on the 10th November 2006 I finally had my 1.72KwP system installed at my property.

My system is what is known as 'grid connected'. That is to say the system is connected to my electricity consumer unit and can feed excess electricity into the national grid whereupon I get paid for each unit - see below for further details.

The  KwP is a rating given to solar PV panel installations to signify the peak Kwh output that can be expected of a system at any one time based on the type, quantity and positioning of the panels. It may well be that my panels will exceed their rating of 1.72 KwP at any one time but it's a gauge of output. I have already seen my panels producing 1.5 Kwh in the lead-up to Christmas 2006.

Detail

Ok, so I've whetted your appetite now and you'd like to know more?

System Installed:

  • 8  Sanyo 215watt Hybrid Solar PV Panels    (see link about them here)
  • Rating - 1.72 Kwp
  • Fronious IG20 Inverter
  • Iskra ME160 Total Generation Meter
  • Wireless Meter Transmitter plus handheld transceiver

My interest in generating electricity from sunlight started a few years back when I purchased some solar lighting for my garden. It was a cheap and simple affair but got me interested in something bigger, a lot bigger. I put the idea on hold for a while but then whilst watching the BBC series 'It's Not Easy Being Green' which features Dick Strawbridge and his family turning an old house in the country into as green a way of living as they can, I thought what can I do to become greener? One of the articles discussed on the programme was solar PV panels. I thought my house faces more or less due South - let's investigate further....and so I did.

After surfing the 'net and making some initial enquiries and obtaining  quotes, I finally invited Sunpowered Systems Ltd ( www.sunpowered.co.uk ) to  install my system. I already knew about the government grants (see here for more details) towards solar PV systems and the details were also confirmed by the installation company. They provided me with the paperwork to apply for the grant along with the system details etc. I settled on a 1.72 KwP system as mentioned and after posting the grant application off to the Low Carbons Building Programme I awaited with baited breath for the ok. A few weeks later I had my grant approved and so could go ahead and instruct my installation company to proceed. A little while later, they sent around their surveyor to check the roof; method of access; positioning of equipment and he also took various pictures to assist them on the day.

The date of 10th November 2006 was fixed as my install date with a contingency of over-running into the 11th in the event of bad weather. The scaffolding to gain access to my roof was in place by the 9th November. At just before 9am on the 10th Sunpowered arrived; checked the scaffolding; checked the roof (and found a few tiles that were cracked and duly replaced them for me) and had finished the install by 15:00. A few minutes later, despite the impending dusk, I saw my first few watts of solar electricity being generated :-)

Once the system had been commisioned and signed-off by the installers and I had received their paperwork, I could then apply to receive my already approved grant.  This took five weeks to arrive. The Low Carbon Buildings Programme have recently been swamped with grant applications following a certain DIY chain selling home wind-turbines I understand. Best to check with them about the current grant situation. See here for their details.

Next, I shopped around for electricity suppliers who would buy my exported electricity. I settled on Equipower from Ebico. Their web site is here .. They fit a free export meter (*) and then pay me 18p/kwh (including ROC’s – see below) for all electricity generated but not consumed by myself. Their import rates are also very competive and there is no standing charge to pay.

As from 8th February 2007 I became an Ofgem accredited generating station. This means that I can claim and trade one ROC for each Mwh I produce each year (to the nearest Mwh). My current electricity supplier  (Ebico) also now handle my ROC’s on my behalf as a part of the 18p/kwh that I receive from them for my exported electricity.

So, that's it - my installation done! Have a look at My Photos to see what it looks like.

(*) an export meter measures the amount of electricity flowing back into the national grid from my solar PV system.  It registers when I am generating more than I am using. I also have a normal import meter that only registers when I am using more electricity than I am generating e.g. overnight/winter.

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