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Old 02-14-09, 04:50 PM   #1
groar
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Default groar's co2 emission thread

I have done a CO2 emission accounting for my family, or at least I tried...

Here are my emissions (based upon French figures) :
  • Electricity :







Electricity yearly consumption CO2 g/kWh CO2 kg/year comment
constant consumption 4.5MWh 0.060 270 500W inst.
water heating 1.5MWh 0.060 90 4.1kWh/night - off peak hours only
heating 3.0MWh 0.143 429 16.1kWh/day
other 3.0MWh 0.090 270 8.2kWh/day
saving -2.0MWh 0.090 -180 misc : fridge, computers, no AC...
PV -3.0MWh 0.09 -270 pro-PV use 0.143g/kWh while anti-PV use 0.060...
Total 7.0MWh 0.087 609 80% of French Electricity is from nuclear plants !!!

  • Natural gas :

Natural gas yearly consumption CO2 g/kg CO2 kg/year comment
butane 13kg 3870 50.31 for cooking only, except oven and micro-wave

  • Diesel :




Diesel yearly consumption CO2 kg/L CO2 kg/year comment
consumption 1890L 2.66 5027.40 30000km @ 6.3L/100
ecodriving -390L 2.66 -1037.40 30000km @ 1.3L/100
work from home -78.75L 2.66 -209.48 -1250km @ 6.3L/100
Total 1421.25L 2.66 3780.52 .

  • Grey energy :






Grey energy yearly consumption CO2 kg/€ CO2 kg/year comment
Food and weekly buys 10.785€ 0.125 1345.79 20% is energy cost, 0.0962€/kWh and 0.060kg/kWh
Misc (appliances...) 1.000€ 0.125 124.78 fridge, TV...
Cars 3.000€ 0.125 374.35 1/10 of cars buying cost
House xxx xxx 659.31 1/8 of house consumption
Total xxx xxx 2504.23


The total is 6944.07 kg/year of CO2.

As Earth can absorb 1.8 ton/year of CO2 by human and we are a family of 3, we are generating 1544 kg/year too much. Nearly what we are saving by eco-driving and electricity saving (1696 kg/year). This total is certainly not complete, but we are probably far from 6.2 tons/year/people as a French.

The biggest saving is eco-driving and my wife and I are still improving...

The grey energy is the biggest guesstimate : I consider 20% of what we buy (food, appliances, cars...) is energy cost, then change this cost to CO2 by considering French electricity. For the cars I considered 1/10 of buying price. For the house I considered 1/8 of CO2 emission by house consumption.

Some ways to improve :
  • About grey energy, does low cost goods really have lower grey energy ?
  • A solar water heater would save 2/3, ie 1.0MWh/year and 60kg/year of CO2.
  • A heat pump to heat would save 2/3, ie 2.0MWh/year and 286kg/year of CO2.
  • A little 400Wp PV grid tied would save 460kWh/year and 41kg/year of CO2.
  • Have another child

I ordered the assembly to connect the electricity meter to a computer. I'll use it to trace the consumption in near real time and use my measures with the wattmeter to identify the consumptions and try to optimize.

Denis.

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Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
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  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
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    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
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    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 02-15-09 at 04:13 PM.. Reason: Completed Grey Energy table and updated totals...
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Old 02-14-09, 06:21 PM   #2
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Wow, thats an impressive amount of work groar. I look forward to seeing what comes of this monitoring device. I've been looking into the different systems available. What one did you go with?
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Old 02-15-09, 03:38 AM   #3
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Default my measures with the wattmeter
















stringkWh/yearWContinuous/Irregularcomment
TV+DVB-T+... "Standby"411.746.97Continuous"On"=1506/171.8 Average=700/79.85
Denis' computers+...525.659.96Continuous
FW+modem+UPS639.472.94Continuous
Hub+Network disks+...507.657.91Continuous
Sylvie's computer+printer+... "Standby"1095.0124.91Continuous"On"=1300
4xAlarm clock70.087.99Continuous
Hifi micro system "Standby"140.115.98ContinuousOn=192.7/21.98
Micro wave oven "Standby"26.283.00Continuous
Others directly pluggued??????ContinuousOven, dish washer, cooking surface, hood...
New fridge140.015.97Irregular
Old fridge240.027.38IrregularFreezer Off, up to 660.0 when freezer On
Freezer245.227.97Irregular
Water filter26.33.00Irregular


Total Continuous : 3389.48kWh/year / 386.66W
Total Irregular : 651.50kWh/year / 74.32W

When looking at the meter, the minimal is 420-440W so 40W are consumed in continuous somewhere...

Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 02-15-09 at 08:13 AM.. Reason: Changed "Off" by "Standby"
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Old 02-15-09, 04:02 AM   #4
groar
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Quote:
Originally Posted by Daox View Post
Wow, thats an impressive amount of work groar. I look forward to seeing what comes of this monitoring device. I've been looking into the different systems available. What one did you go with?
I'll use this one :
Teleinfo - 1. Présentation - Aperçu
Teleinfo - 1. Présentation - Screenshot
Hint : HC=Off Peak Hours / HP=Peak Hours
It is a hand made one. It's a improved version of the electronic schema available here : Hardware:CompteurEdf - MacodaWiki
!!! I don't know if it works on other meters than EDF ones (French Electricity company). These meters has teleinformation plugs called I1/I2.

Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...
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Old 02-15-09, 04:24 PM   #5
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Updated first post to complete the table of Grey Energy with cars, house and appliances. It hits the result by 20% (1160kg/year)

Grey Energy is not only the more difficult to understand, it's also the more difficult to evaluate and optimize...

Denis.
__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...
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Old 02-23-09, 03:31 PM   #6
groar
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In France the owner of a house have to show an energy audit when he wants to let it or to sell it. The result is a note as the one presented on appliances and cars. It's based upon the kWh consumed and the CO2 emitted for heating and cooling the house. Here are the thresholds :
  • Consumption, kWh/m²/year:
  • Emission, kg(CO2)/m²/year:

Pictures from Guide pratique DPE ADEME, pour tout savoir sur le diagnostic de performance énergétique (FR)

From another thread, here is the result of my Kyoto protocol calculation :

Quote:
Originally Posted by groar View Post
The final ratio for my house is 90+5+19-25 = 89 kWh/m²/year included 36 kWh/m²/year for heating.
36 kWh/m²/year is rated A
(Edit) This is 36 kWh/m²/year of consumed energy. The classification is based upon primary energy. In France, the consumption of 1 kWh of electricity needs the production of 2.58 kWh (1) !!! The last classification scheme takes into account the electricity locally produced, ie my PV panels : 3 MWh/year = 24 kWh/m²/year.
The total primary energy is : 36*2.58-24 = 69 kWh/m²/year which is rated B

From a previous message in this thread, here is an extract of my CO2 emission accounting :
Quote:
Originally Posted by groar View Post




Electricity yearly consumption CO2 g/kWh CO2 kg/year comment
water heating 1.5MWh 0.060 90 4.1kWh/night - off peak hours only
heating 3.0MWh 0.143 429 16.1kWh/day
PV -3.0MWh 0.09 -270 pro-PV use 0.143g/kWh while anti-PV use 0.060...
Which gives a result of (90+429)/125 = 4.2 kg/m²/year which is rated A
(Edit) The last classification scheme takes into account the electricity locally produced, ie my PV panels : (90+429 - 270)/125 = 2.0 kg/m²/year which is rated A

Of course these calculations haven't been done by a professional, but the French average is class E with 240 kWh/m²/year

Nevertheless, things can always be improved :
  • A solar water heater would save 2/3, ie 1.0 MWh/year and 60kg/year of CO2.
  • A heat pump to heat would save 2/3, ie 2.0 MWh/year and 286kg/year of CO2.
ie (60 + 286)/125 = 2.7 kg/m²/year saving, but these have an important initial cost so they will have to wait several years...
(Edit) The last classification scheme taking into account the electricity locally produced, the CO2 balance would be 2.0 - 2.7 = -0.7, ie negative
(Edit) For the energy classification, the saving would be (1+2)*1000*2.58/125 = 61 kWh/m²/year, ie a result of 69-61 = 8 kWh/m²/year

(Edit) [1] this coefficient takes into account the lost in transport (some French regions have very few plant), but also what is produced and not consumed (a nuclear reactor is on or off, and its production level can't be set). In other countries the coefficient is lower
For other energies, the coefficient is 1 in France.

Denis.
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__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 02-27-09 at 03:48 PM.. Reason: Updated the kWh class : clarified the confusion between consumed vs primary energies
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Old 02-23-09, 04:12 PM   #7
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Quote:
Originally Posted by groar View Post
In France the owner of a house have to show an energy audit when he wants to let it or to sell it. The result is a note as the one presented on appliances and cars. It's based upon the kWh consumed and the CO2 emitted for heating and cooling the house.
That is a great idea! Over here we have to call up the local utility and see what their monthly average for the utilities have been for the past year or so. It would be really nice to have something like you guys do.

Congrats on ranking A too!
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Old 02-27-09, 04:09 PM   #8
groar
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After several other readings, I found a small paragraph stating that the energy classification is based upon the primary energy and not upon the consumed energy. The last classification takes into account the locally produced electricity, ie my PV panels. I updated the first post to correct all the calculations and finally the energy classification isn't A but B, which is far better than French average which is D

To achieve the A label for energy classification and so the Kyoto objectives, we have to save 1 MWh/year (consumed) on heating, water heating and cooling, ie the solar water heater would be sufficient (if I didn't made any mistake ).

We have a few todo about the entry doors isolation. The current doors are very thin. We are thinking about changing them by thick wood and changing the isolation joints. We are also going to change the heating programmer to have a digital 7 days one (with temporary exception) and not a mechanical 24 hours one. With these few points we'll not save a lot each year, but they will be a first step

(Edit) also updated my Kyoto protocol ratio http://ecorenovator.org/forum/billia....html#post2002

Denis.

__________________
Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
  • kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
    To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...

Last edited by groar; 02-27-09 at 04:47 PM..
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