- The Rhame wind farm, Bowman County, southwestern North Dakota, 19.5 megawatts, 13 turbines
- The Diamond Willow wind farm, Baker, MT, 10.5 megawatts, see comments section below
- Can supply electricity needs for 10,000 homes
Rules of thumb
- 500 megawatts on-land wind farms: $500 million
- 500 megawatts off-shore wind farms: $1 billion
- 1 turbine on the northern plains: 1 megawatt
- 30 megawatts = 10,000 homes
UPDATES
Update -- July 22, 2010: after posting the above in which I asked how many turbines were supporting the Diamond Willow wind farm, I got the explanation, which is posted in the comment section below.