Anybody got any reasonably researched figures on the effect of inter-tie photovoltaics upon global warming? The only information I have been able to come up with is:

36-38% of global warming gases are from electrical production.

Annual avoided emissions from one KW of PV:

1.86 tons carbon dioxide

12 lbs sulfur dioxide

11.6 lbs nitrous oxide

These are from some older Real Goods publications and I am not sure how up to date or acurrate they are. I believe they are for a nation-wide energy mix. I assume that the environmental benefits begin after the embodied energy of the PV system has been paid back which I am guessing to be after seven years.

Anybody got any credible information on this? I find that my customers are often interested in the environmental impacts of their decision to go solar.

Rob Harlan

Mendocino Solar Service

mendosol@mcn.org

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