In October I posted about my electrical consumption. I’ve gotten a few more bills since then, so I can give the complete picture for 2008:

As I guessed, I used about the same amount in 2008 as in 2007. I haven’t done anything to reduce my usage since then, but I’m still thinking about it.

Every few months, ComEd includes with my bill an environmental disclosure pamphlet that lays out how its power was generated over the last twelve months. The most recent one covered the period up through September, 2008 and it broke down the sources as 60% nuclear, 34% coal, and a few percent from natural gas, hydro, and biomass. This seems to change quite a bit from pamphlet to pamphlet, which I’m guessing is because they’re always buying their power from different sources.

It also provides a table that gives average amounts of emissions that those sources produced, per 1,000 kilowatt-hours. This lets me calculate my personal impact:

	per 1,000 kWh	My emissions
Carbon dioxide (lbs)	761.39	1,453
Nitrogen oxides (lbs)	1.35	2.58
Sulfur dioxide (lbs)	4.23	8.07
High level nuclear waste (lbs)	0.006	0.011
Low level nuclear waste (cubic)	0.0004	0.0008