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Author Topic: 1 Year in  (Read 1689 times)
pantsmachine
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« on: June 06, 2019, 09:45:07 AM »

Well that’s 1 year tomorrow the solar went live at the house along with the Solar Iboost, Batteries have been live for 9 months. We have produced 3.7Mwh of power in that year.

We have bought 2280kwh Electricity in the Year since install, for comparison

2016- 5,762 kwh bought
2017- 5,553 kwh bought
Around a 60% reduction

We have bought 19,155kwh gas in the Year since install, for comparison

2016- 30,376kwh bought
2017- 29,196kwh bought
Around a 36% reduction

I have records going back a few years with our gas peaking at 35,500kwh and electricity at 6,500kwh in the worst year. That is worst case and pre-works which are many and various across the house (5 bed, 3 living room).

46% reduction in gas consumption from worst Year
65% reduction in electricity consumption from worst Year

My mind being as it is I played with the ways to generate a reasonable comparison in cash terms. I settled on June 16 to May 17 being the sample months and going on the costs at 2 year fixed dual fuel contract on each month at that day terms on a month by month basis. I also included the sum generated from FIT.

The figures are in the ballpark.

Solar & batteries cost only – ROI  16.2%

Solar, Batteries & other power reduction costs– ROI 12.45%

The way I am set up the FIT is a minuscule part of the overall and doesn’t figure in my mind much at all. The game has been played purely to reduce our consumption while only lightly touching on our QOL. The figures for the next year will be better as i’ll have a full year of the benefit of the batteries as opposed to 9 months at the moment. Also a few recent tweaks will show up in the annual figures. Pretty damn amazed if I do say so myself! Smiley

All the best lads, I hope you are similar or better.
« Last Edit: June 06, 2019, 09:25:50 PM by pantsmachine » Logged

HUGE insulation depth.
5.12 kw PV system with Solar edge.
4.8 kw Pylon tech battery storage.
All Low energy bulbs.
Solar I boost charging 210 ltr OSO system tank.
Balanced & zoned CH wet system & Hive 2
Wood fired thermosiphon cedar hot tub.
Masanobu Fukuoka inspired veg garden & fruit trees
dan_b
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« Reply #1 on: June 06, 2019, 12:19:40 PM »

Happy anniversary!
It does feel good when you look back at the figures and can see what are pretty significant reductions in consumption doesn't it!
You'll be getting an EV next...
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3.06kWp SolarEdge system with a split array:
2.18kWp 10x South facing, plus 4x West facing 880W

Mk1 ImmerSUN DHW diverter
4kW PowerVault Battery
todthedog
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« Reply #2 on: June 06, 2019, 12:24:40 PM »

Well done!
Happy birthday Grin
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'In a time of universal deceit, telling the truth is a revolutionary act'
pantsmachine
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« Reply #3 on: June 06, 2019, 01:07:41 PM »

Thanks lads, EV at some point but not quite yet, might allow myself one at 55. We just bought an imported Bongo 2.5td which runs on veg oil/diesel mix. Slowly, slowly, catchy monkey! Smiley
« Last Edit: June 06, 2019, 04:34:32 PM by pantsmachine » Logged

HUGE insulation depth.
5.12 kw PV system with Solar edge.
4.8 kw Pylon tech battery storage.
All Low energy bulbs.
Solar I boost charging 210 ltr OSO system tank.
Balanced & zoned CH wet system & Hive 2
Wood fired thermosiphon cedar hot tub.
Masanobu Fukuoka inspired veg garden & fruit trees
Fintray
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« Reply #4 on: June 06, 2019, 04:58:45 PM »

That's a good result and vindication that solar and batteries can and do work this far north.
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3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!)
MK2 PV router DHW diverter
Morso 5kW WBS
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