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Off-grid PV upgrade complete

 
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mikepepler
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Joined: 24 Nov 2005
Posts: 2866
Location: Rye, UK

PostPosted: Thu Jul 18, 2013 8:28 am    Post subject: Off-grid PV upgrade complete Reply with quote

Well, after numerous questions on here over the past few months (thanks for answers, esp, Adam!), I've finally got the upgrade done on our PV system. As you might expect from me, there's a write up on my blog, including three videos (overview, installation of the charge controller, software access to the charge controller over a network):
http://www.peplers.blogspot.co.uk/2013/07/off-grid-solar-pv-upgrade.html

The overview video even includes our washing machine running off grid! Very Happy

DSC_6678 Suntech solar panels by mikepepler, on Flickr
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emordnilap



Joined: 05 Sep 2007
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Location: Houǝsʇlʎ' ᴉʇ,s ɹǝɐllʎ uoʇ ʍoɹʇɥ ʇɥǝ ǝɟɟoɹʇ' pou,ʇ ǝʌǝu qoʇɥǝɹ˙

PostPosted: Thu Jul 18, 2013 10:00 am    Post subject: Reply with quote

Congratulations Mike. Laughing
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mikepepler
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Location: Rye, UK

PostPosted: Sat Jul 20, 2013 10:33 am    Post subject: Reply with quote

Just saw the output peak at 800W, due to 'cloud edge effect'!
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biffvernon



Joined: 24 Nov 2005
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Location: Lincolnshire

PostPosted: Sat Jul 20, 2013 1:26 pm    Post subject: Reply with quote

My system, rated at 3.98kW, seems to think that producing over 20kWhr/day is the new normal. The upside of fine weather.

(Long term average is about 9kWhr/day)
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mikepepler
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Location: Rye, UK

PostPosted: Mon Jul 22, 2013 12:36 pm    Post subject: Reply with quote

biffvernon wrote:
My system, rated at 3.98kW, seems to think that producing over 20kWhr/day is the new normal. The upside of fine weather.

(Long term average is about 9kWhr/day)
Ours is getting up to that level per kWp installed, though is limited by how much power we can use with it being off-grid and the batteries full...

Will be a different matter in the winter of course! But for now, we've had the fridge, freezer and washing machine off grid for 2 weeks now (plus computers, router and solar thermal pump). Saving the washing up for sunny days, as we've had a few cloudy too.
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Pepperman



Joined: 10 Oct 2010
Posts: 759

PostPosted: Mon Aug 05, 2013 9:28 am    Post subject: Reply with quote

mikepepler wrote:
Ours is getting up to that level per kWp installed, though is limited by how much power we can use with it being off-grid and the batteries full...


I believe the Morningstar can handle load diversion quite easily - couldn't you hook up an immersion heater and make use of the excess?
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Pepperman



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PostPosted: Mon Aug 05, 2013 9:44 am    Post subject: Reply with quote

ah never mind. I see you have solar water heating!
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mikepepler
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Location: Rye, UK

PostPosted: Sun Apr 06, 2014 8:47 am    Post subject: Reply with quote

Well, I found space on the roof for two more solar PV panels, so it seemed rude not to fill it...
http://peplers.blogspot.com/2014/04/off-grid-solar-pv-upgrade-750w-to-1250w.html
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adam2
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Joined: 02 Jul 2007
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Location: North Somerset

PostPosted: Sun Apr 06, 2014 4:09 pm    Post subject: Reply with quote

mikepepler wrote:
Well, I found space on the roof for two more solar PV panels, so it seemed rude not to fill it...
http://peplers.blogspot.com/2014/04/off-grid-solar-pv-upgrade-750w-to-1250w.html


Congratulations ! More PV is good.

Grid tied PV tends to make more sense in strict economic terms, but battery charging systems are invaluable for independance, esp in case TSHTF.
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