Agricultural water rate? – Page 6 – Piggington's Econo-Almanac

This topic has 140 replies, 11 voices, and was last updated 17 years, 4 months ago by fm.

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July 21, 2008 at 2:11 PM #244059

Eugene
Participant

(and considering the enormous amount of energy needed to pump that water from either the Colorado river, or from the Delta and over the grapevine, I doubt your grass is oxygen positive. Therefore, I think you are using MY oxygen. 😉 )

Actually that’s not the case. Here are some numbers.

Cost to pump fresh water to LA through California State Water Project: 3000 kwh/acre-foot or 9 wh/gallon

Carbon dioxide consumed by 1000 sf of grass: around 500-600 kg/year (hard to find good numbers)

Water spent to grow grass: let’s say 40″/year in addition to rainfall = 25,000 gallon/year = 225 kwh

worst-case scenario (100% coal-powered electricity): 1 kwh of electricity = 1 kg of emissions, 225 kwh = 225 kg

So, even in the worst-case scenario, my lawn would be net oxygen-positive. And California has fairly clean electricity.

July 21, 2008 at 2:15 PM #243861

DWCAP
Participant

wow, huh. Where did you get those numbers?

July 21, 2008 at 2:15 PM #244005

DWCAP
Participant

wow, huh. Where did you get those numbers?

July 21, 2008 at 2:15 PM #244013

DWCAP
Participant

wow, huh. Where did you get those numbers?

July 21, 2008 at 2:15 PM #244067

DWCAP
Participant

wow, huh. Where did you get those numbers?

July 21, 2008 at 2:15 PM #244075

DWCAP
Participant

wow, huh. Where did you get those numbers?

July 21, 2008 at 3:31 PM #243921

Eugene
Participant

Google 🙂

Energy cost of pumping water to SoCal:

http://www.eesi.org/briefings/2006/Energy&Climate/9.13.06-Energy-Water-Climate/Gleick_9.13.06.pdf

Energy to CO2 conversion factors are easy to find – e.g. here

ftp://ftp.eia.doe.gov/pub/oiaf/1605/cdrom/pdf/e-supdoc.pdf

0.61 lbs (275 g) of CO2 per kWh of electricity (California, 2000)

Carbon consumption of the lawn is the hardest one. Many places say that it takes 625 sf of grass to capture all carbon dioxide exhaled by one person (roughly 1 kg / day).

July 21, 2008 at 3:31 PM #244065

Eugene
Participant

Google 🙂

Energy cost of pumping water to SoCal:

http://www.eesi.org/briefings/2006/Energy&Climate/9.13.06-Energy-Water-Climate/Gleick_9.13.06.pdf

Energy to CO2 conversion factors are easy to find – e.g. here

ftp://ftp.eia.doe.gov/pub/oiaf/1605/cdrom/pdf/e-supdoc.pdf

0.61 lbs (275 g) of CO2 per kWh of electricity (California, 2000)

Carbon consumption of the lawn is the hardest one. Many places say that it takes 625 sf of grass to capture all carbon dioxide exhaled by one person (roughly 1 kg / day).

July 21, 2008 at 3:31 PM #244071

Eugene
Participant

Google 🙂

Energy cost of pumping water to SoCal:

http://www.eesi.org/briefings/2006/Energy&Climate/9.13.06-Energy-Water-Climate/Gleick_9.13.06.pdf

Energy to CO2 conversion factors are easy to find – e.g. here

ftp://ftp.eia.doe.gov/pub/oiaf/1605/cdrom/pdf/e-supdoc.pdf

0.61 lbs (275 g) of CO2 per kWh of electricity (California, 2000)

Carbon consumption of the lawn is the hardest one. Many places say that it takes 625 sf of grass to capture all carbon dioxide exhaled by one person (roughly 1 kg / day).

July 21, 2008 at 3:31 PM #244128

Eugene
Participant

Google 🙂

Energy cost of pumping water to SoCal:

http://www.eesi.org/briefings/2006/Energy&Climate/9.13.06-Energy-Water-Climate/Gleick_9.13.06.pdf

Energy to CO2 conversion factors are easy to find – e.g. here

ftp://ftp.eia.doe.gov/pub/oiaf/1605/cdrom/pdf/e-supdoc.pdf

0.61 lbs (275 g) of CO2 per kWh of electricity (California, 2000)

Carbon consumption of the lawn is the hardest one. Many places say that it takes 625 sf of grass to capture all carbon dioxide exhaled by one person (roughly 1 kg / day).

July 21, 2008 at 3:31 PM #244135

Eugene
Participant

Google 🙂

Energy cost of pumping water to SoCal:

http://www.eesi.org/briefings/2006/Energy&Climate/9.13.06-Energy-Water-Climate/Gleick_9.13.06.pdf

Energy to CO2 conversion factors are easy to find – e.g. here

ftp://ftp.eia.doe.gov/pub/oiaf/1605/cdrom/pdf/e-supdoc.pdf

0.61 lbs (275 g) of CO2 per kWh of electricity (California, 2000)

Carbon consumption of the lawn is the hardest one. Many places say that it takes 625 sf of grass to capture all carbon dioxide exhaled by one person (roughly 1 kg / day).

July 21, 2008 at 3:57 PM #243941

ucodegen
Participant

and considering the enormous amount of energy needed to pump that water from either the Colorado river, or from the Delta and over the grapevine

Actually it goes through the grapevine. There is a long tunnel going through the mountains there.

http://www.hellolosangeles.com/Landmarks/Tunnel/269567/Aqueduct_Tunnel.cfm

I tried to find pictures of it before it was put into use. I found them once before. In addition, energy reclamation techniques such as siphoning (the water going downhill in the pipe is used to push/pull the water up the hill) and using the downfall to generate electricity are used. Even so, moving water around CA requires an incredible amount of energy.

http://www.spannertech.com/water/
http://wsoweb.ladwp.com/Aqueduct/historyoflaa/worldrecords.htm
http://www.ladwp.com/ladwp/cms/ladwp004409.jsp

July 21, 2008 at 3:57 PM #244085

ucodegen
Participant

and considering the enormous amount of energy needed to pump that water from either the Colorado river, or from the Delta and over the grapevine

Actually it goes through the grapevine. There is a long tunnel going through the mountains there.

http://www.hellolosangeles.com/Landmarks/Tunnel/269567/Aqueduct_Tunnel.cfm

I tried to find pictures of it before it was put into use. I found them once before. In addition, energy reclamation techniques such as siphoning (the water going downhill in the pipe is used to push/pull the water up the hill) and using the downfall to generate electricity are used. Even so, moving water around CA requires an incredible amount of energy.

http://www.spannertech.com/water/
http://wsoweb.ladwp.com/Aqueduct/historyoflaa/worldrecords.htm
http://www.ladwp.com/ladwp/cms/ladwp004409.jsp

July 21, 2008 at 3:57 PM #244093

ucodegen
Participant

and considering the enormous amount of energy needed to pump that water from either the Colorado river, or from the Delta and over the grapevine

Actually it goes through the grapevine. There is a long tunnel going through the mountains there.

http://www.hellolosangeles.com/Landmarks/Tunnel/269567/Aqueduct_Tunnel.cfm

I tried to find pictures of it before it was put into use. I found them once before. In addition, energy reclamation techniques such as siphoning (the water going downhill in the pipe is used to push/pull the water up the hill) and using the downfall to generate electricity are used. Even so, moving water around CA requires an incredible amount of energy.

http://www.spannertech.com/water/
http://wsoweb.ladwp.com/Aqueduct/historyoflaa/worldrecords.htm
http://www.ladwp.com/ladwp/cms/ladwp004409.jsp

July 21, 2008 at 3:57 PM #244147

ucodegen
Participant

and considering the enormous amount of energy needed to pump that water from either the Colorado river, or from the Delta and over the grapevine

Actually it goes through the grapevine. There is a long tunnel going through the mountains there.

http://www.hellolosangeles.com/Landmarks/Tunnel/269567/Aqueduct_Tunnel.cfm

I tried to find pictures of it before it was put into use. I found them once before. In addition, energy reclamation techniques such as siphoning (the water going downhill in the pipe is used to push/pull the water up the hill) and using the downfall to generate electricity are used. Even so, moving water around CA requires an incredible amount of energy.

http://www.spannertech.com/water/
http://wsoweb.ladwp.com/Aqueduct/historyoflaa/worldrecords.htm
http://www.ladwp.com/ladwp/cms/ladwp004409.jsp
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