The Marshalltown Generating Station is a 650 MW 2 x 1 combined cycle natural gas-fueled power plant owned by Interstate Power & Light (Alliant Energy). This plant consists of two Siemens 501F gas turbines (SGT6-5000F, 230 MW each), two Nooter Eriksen HRSG’s and one Siemens steam turbine (SST6-5000). Construction began in the fourth quarter of 2014 and the plant went online the fourth quarter of 2016. This facility includes a full building enclosure of the STG, CTG’s and HRSG’s to allow the owner better year-round equipment maintenance and winter cycling abilities.
Boldt’s scope of work included:
Building layout
Forming, pouring and finishing of all concrete
Erection of all structural steel
Rigging, unloading and storage of materials and plant equipment
Rigging engineering
Installation, alignment and grouting of centerline equipment
Erection and weld out of HRSG’s
High pressure HRSG interconnection piping
Installation, alignment and grouting of balance of plant equipment
Supply of all cranes over 100 ton
Learn more about our work in the energy market.
To meet growing community demand for power, City Utilities of Springfield began construction on a second coal-fired, 300-MW unit at its existing southwest power station.
Wolverine Power is building and will operate a 2x0 Simple Cycle 405 MW project at a green-field site located in Elmira Township, Otsego County, Michigan.
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