Is there a flaw in treating electricity as fungible in this case? What matters is the amount of carbon that would be produced without Amazon, vs. the amount produced including Amazon.
If they were together there could be a tech angle - like how this was going to insulate their data centres from problems with the grid, or how they were going to shed load when the wind wasn't blowing, or something like that.
Otherwise it sounds like AWS and Amazon Wind Power could basically be two unrelated companies.
perhaps AWS as a whole has a reasonable constant electric load. The price per MWh fluctuates during "on-peak" and "off-peak" hours. The price really goes up when you accidentally need more power during peak demand.
I'm wondering if wind power isn't an effort to decrease the price they pay on the open market for peak power, or to at least recoup some of those costs.
