How many wind farms are planned in Iowa?

Developers have proposed 35 wind farms in Iowa with 7.1 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.

What is the largest planned wind farm in Iowa?

Bison - Colby 345kV in Winnebago County, Iowa is the largest planned, at 320 MW. It is expected to come online in 2028.

Who is developing wind farms in Iowa?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Planned wind farms in Iowa

Developers have proposed 35 wind farms in Iowa with 7.1 GW of capacity, in the grid operators' interconnection queues.

Planned35

See operating wind farms in Iowa

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

More planned wind farms in Iowa are expected online in 2030 than in any other year

2026’262027’272028’282029’292030’302031’312032’322033’33

Planned wind farms by the year they're expected online. Source: the grid operators' interconnection queues, compiled by Cleanview.

The 10 largest planned wind farms in Iowa

Planned, by capacity

#	Wind farm	County	Expected online	Capacity
1	Bison - Colby 345kV	Winnebago County	2028	320 MW
2	Lehigh - Marshalltown (Twinkle) 345kV	Marshall County	2030	310 MW
3	Madison-Orient 345kV	Taylor County	2030	300 MW
4	Webster-Lehigh 345kV	Webster County	2030	300 MW
5	Obrien County - Kossuth 345 kV Line Tap	Dickinson County,Emmet County	2024	300 MW
6	Orient - Denny 345kV	Ringgold County	2030	290 MW
7	Silver Queen Wind Farm	Crawford County	2028	252 MW
8	Salem - Rock Creek 345kV Line	Clinton County	2025	250 MW
9	Lehigh - Marshalltown (Twinkle) 345kV	Marshall County	2030	232 MW
10	Worth County	Worth County	2027	230 MW

Planned wind farms expected online soonest in Iowa

In the next 18 months, soonest first

#	Wind farm	County	Expected online	Capacity
1	Worth County	Worth County	2027	230 MW
2	Denison Wind	Denison County	2027	180 MW
3	OVERLAND TRAIL - FALLOW AVENUE 345.0kV	Dallas County	2028	200 MW
4	Ottumwa Generation - Woody 161kV	Wapello County	2028	200 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks wind farms

Operating wind farms come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about wind farms in Iowa

How many wind farms are planned in Iowa?: Developers have proposed 35 wind farms in Iowa with 7.1 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.
What is the largest planned wind farm in Iowa?: Bison - Colby 345kV in Winnebago County, Iowa is the largest planned, at 320 MW. It is expected to come online in 2028.
Who is developing wind farms in Iowa?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.