How many natural gas power plants are planned in Missouri?

Developers have proposed 40 natural gas power plants in Missouri with 7.3 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.

What is the largest planned natural gas power plant in Missouri?

SIOUX in St. Charles County, Missouri is the largest planned, at 2,220 MW. It is expected to come online in 2030.

Who is developing natural gas power plants in Missouri?

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 natural gas power plants in Missouri

Developers have proposed 40 natural gas power plants in Missouri with 7.3 GW of capacity, in the grid operators' interconnection queues.

Planned40

See operating natural gas power plants in Missouri

Updated monthly. Last updated November 2026.

Under 250 MW250–999 MW1 GW and up

Updated monthly. Last updated November 2026.

More planned natural gas power plants in Missouri are expected online in 2028 than in any other year

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

Planned natural gas power plants by the year they're expected online. Source: the grid operators' interconnection queues, compiled by Cleanview.

The 10 largest planned natural gas power plants in Missouri

Planned, by capacity

#	Natural gas power plant	County	Expected online	Capacity
1	SIOUX	St. Charles County	2030	2,220 MW
2	Missouri Thermal	Missouri County	2029	779 MW
3	Mullin Creek #1 Generating Station	Nodaway County	2030	490 MW
4	Maryville Thermal	Maryville County	2030	451 MW
5	Maryville Thermal	Maryville County	2030	451 MW
6	Turney Energy Center	Clinton County	2027	419 MW
7	Joplin Thermal	Joplin County	2030	250 MW
8	Missouri Thermal	Missouri County	2026	226 MW
9	Castle Bluff Energy Center	St Louis County	2027	216 MW
10	Castle Bluff Energy Center	St Louis County	2027	216 MW

Planned natural gas power plants expected online soonest in Missouri

In the next 18 months, soonest first

#	Natural gas power plant	County	Expected online	Capacity
1	Marshall Energy Center	Saline County	2026	23 MW
2	Marshall Energy Center	Saline County	2026	23 MW
3	Greene Thermal	Greene County	2027	145 MW
4	McCartney	Greene County	2027	49 MW
5	McCartney	Greene County	2027	49 MW
6	McCartney	Greene County	2027	49 MW
7	Turney Energy Center	Clinton County	2027	419 MW
8	Castle Bluff Energy Center	St Louis County	2027	216 MW
9	Castle Bluff Energy Center	St Louis County	2027	216 MW
10	Castle Bluff Energy Center	St Louis County	2027	216 MW

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

How Cleanview tracks natural gas power plants

Operating natural gas power plants 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 natural gas power plants in Missouri

How many natural gas power plants are planned in Missouri?: Developers have proposed 40 natural gas power plants in Missouri with 7.3 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.
What is the largest planned natural gas power plant in Missouri?: SIOUX in St. Charles County, Missouri is the largest planned, at 2,220 MW. It is expected to come online in 2030.
Who is developing natural gas power plants in Missouri?: 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.