Coal-Fired Plants in the USA - Minnesota
Allen S King
Location: MN Operator: Xcel Energy
Configuration: 1 X 598 MW
Operation: 1968
Fuel: bituminous coal, subbituminous coal, wood
Boiler supplier: B&W
T/G supplier: WH
Quick facts: The Xcel Energy power plant nesting project began in 1989, when the Allen S King plant became the first power plant in the United States to provide a home for nesting peregrine falcons. In June 2007, a 3yr modernization project was completed at King earning the facility an Honorable Mention as Coal-Fired Project of the Year by Power Engineering magazine. This included upgrades of the supercritical cyclone bolier, installation of a new T/G, a semidry FGD and baghouse from Alstom, plus an MHI SCR system. Allen King was a former president and chairman of Northern States Power. Photograph by Jerry Miller and courtesy of Xcel Energy
Posted 13 Jun 2001
Black Dog
Location: MN Operator: Xcel Energy
Configuration: 1 X 81 MW (ret), 1 X 137 MW, 1 X 114 MW, 1 X 180 MW
Operation: 1952-1960
Fuel: coal, natural gas
Boiler supplier: B&W, CE, FW, B&W
T/G supplier: AC, WH
EPC: Pioneer
Quick facts: Unit-1 was retired and Unit-2 was repowered in 2002 with a SWPC W501F gas turbine.

Photograph by Jerry Miller and courtesy of Xcel Energy
Posted 5 May 2002

Clay Boswell
Location: MN Operator: Minnesota Power
Configuration: 2 X 75 MW, 1 X 365 MW, 1 X 558 MW
Operation: 1958-1980
Fuel: subbituminous coal
Boiler supplier: RS, CE
T/G supplier: GE, WH
Quick facts: New Babcock-Hitachi FGD and SCR systems were commissioned on Unit-3 in 2009. Burns & McDonnell was responsible for BOP design. Clay Boswell was president of Minnesota Power & Light from 1954 to 1966.

Photograph courtesy of Allete
Posted 18 Oct 2003

High Bridge 5&6
Location: MN Operator: Xcel Energy
Configuration: 1 X 95 MW, 1 X 172 MW
Operation: 1956-1959 (ret)
Fuel: bituminous coal, subbituminous coal, natural gas
Boiler supplier: B&W
T/G supplier: AC, GE
EPC: Pioneer
Quick facts: High Bridge gets its name from the adjacent bridge over the Mississippi River, first built in 1889 and rebuilt in 1985. High Bridge was equipped with a substation that could distribute power directly to the city of St Paul. While the four oldest units have been retired from power production, two boilers provide process steam to a local paper plant through a 5mn steam line, constructed in 1983. When a new 550-MW CCGT block was finished in 2008, the old units were demolished.

Photograph courtesy of Xcel Energy
Posted 1 Jul 2006

Hoot Lake 2&3
Location: MN
Operator: Otter Tail Power Co
Configuration: 1 X 54 MW, 1 X 75 MW
Operation: 1959-1964
Fuel: subbituminous coal
Boiler supplier: CE, B&W
T/G supplier: GE, WH
EPC: Burns & Roe, Bechtel
Quick facts: Hoot Lake PS is in Fergus Falls. A 300-kW hydro plant at the site went online in 1914.

Photograph courtesy of Otter Tail Power Co
Posted 18 Jul 2015

Laskin
Location: MN Operator: Minnesota Power
Configuration: 2 X 58 MW
Operation: 1953
Fuel: natural gas, formerly subbituminous coal
Boiler supplier: CE
T/G supplier: WH
Quick facts: Company officials and state and local leaders celebrated 50yrs of plant operation at ceremonies on 2 July 2003. The power station was originally called the Aurora Steam Electric Station and was built to power early taconite processing facilities in the Iron Range. It was later renamed for Sylvester "Syl" Laskin, who managed Minnesota Power's Range Division during the plant's early years and ultimately rose to become president, chairman and CEO. It was the only the second coal-fired plant for Minnesota Power. Laskin has served as a test site for the use of waste oil as fuel, houses a full-scale ozone generator project that remains one of the largest of its kind in the industry, and Unit-2 was used for an EPRI test of activated carbon injection with boiler chemical additives for mercury emissions reduction project. The adjacent 220ac Laskin Energy Park offering industrial building sites with electricity, natural gas and low-cost steam supplies. The plant was converted from PRB coal to natural gas in 2015.

Photograph courtesy of Allete
Posted 29 Jul 2008

Riverside 7&8
Location: MN
Operator: Xcel Energy
Configuration: 1 X 142 MW, 1 X 231 MW
Operation: 1964-1987 (ret)
Fuel: subbituminous coal
Boiler supplier: B&W
T/G supplier: GE, MHI, Melco
EPC: Pioneer
Quick facts: With its first units dating to 1911, Riverside was the oldest coal-fired plant in the Xcel Energy system. Although construction crews used primitive tools and horse-drawn equipment, Unit-1 was up and running within 18wks after construction began and a second unit came on line a few weeks later. By 1966, Riverside had eight operating units and a net capability of 512 MW. As the plant aged, some units were retired, but the remaining units received aggressive maintenance and upgrade activities including a new T/G set at Unit-7. The retired end of the plant is home to a technical training center and two parks are adjacent to the plant site, one of which was developed with assistance from plant employees. The coal units are all closed, Unit-7 was repowered in 2009 to a 2+1 CCGT block using Siemens W501D GTs.

Photograph courtesy of Xcel Energy
Posted 1 Jul 2006

Sherburne County
Location: MN
Operator: Xcel Energy
Configuration: 2 X 660 MW, 1 X 884 MW
Operation: 1976-1987
Fuel: subbituminous coal
Boiler supplier: CE, B&W
T/G supplier: GE
EPC: Blac & Veatch, Northern States Power
Quick facts: The three Sherco units have comprehensive air-pollution control equipment including unique particulate scrubbers and wet electrostatic precipitators on Units 1&2 and a dry FGD scrubber using Niro rotary atomizer technology on Unit-3. Units 1&2 were retrofit with wet FGD systems as well. The plant is part of the Peregrine falcon power plant nesting project, a unique industry and conservation partnership of Xcel Energy and the Raptor Resource Project that started in 1989. Xcel nest sites have now produced almost one-third of the Midwest's Peregrines. Hermes Flower Co uses waste heat from Sherco to heat eight greenhouses where flowers are grown. The power plant accounts for approximately 40% of the county tax base. Southern Minnesota Power Agency (SMPA) has a 41% stake in Unit-3. A Power Plant Trading Card was made for this plant.

Photograph by Mulad (wikipedia)
Posted 2 Apr 2016

Silver Lake
Location: MN
Operator: Rochester Public Utilities
Configuration: 1 X 8 MW, 1 X 12 MW, 1 X 25 MW, 1 X 54 MW
Operation: 1948-1969 (ret)
Fuel: bituminous coal, natural gas
Boiler supplier: RS, B&W
T/G supplier: WH, GE
Quick facts: This small power station is on the South Fork Zumbro River on Silver Lake in southeastern Minnesota. The site is 1mi north of downtown Rochester. Minnesota Municipal Power Agency purchases electricity from the facility. Silver Lake is an important stopping point for migrating giant Canada geese. Final coal burn was on 14 Nov 2013 and power generation stopped in 2015.

Photograph courtesy of Rochester Public Utilities
Re-posted 9 Jan 2016

 
Silver Lake Unit-1
Location: MN
Operator: Rochester Public Utilities
Configuration: 1 X 8 MW
Operation: 1948 (ret)
Fuel: bituminous coal, natural gas
Boiler supplier: RS
T/G supplier: WH
Quick facts: This is Silver Lake Unit-1 shown in 1949.

Photograph courtesy of PostBulletin.com
Posted 28 Mar 2012

Taconite Harbor
Location: MN
Operator: Minnesota Power
Configuration: 3 X 75 MW
Operation: 1957-1967
Fuel: bituminous coal
Boiler supplier: CE
T/G supplier: WH
EPC: Ebasco
Quick facts: This area on Lake Superior's North Shore has a massive loading dock and rail facilities supporting regional iron ore mining and steel making activities. The power plant was built by Erie Mining Co and LTV and acquired by Minesota Power in 2001 after the plant was idled and the LTV works in Hoyt Lakes were closed. In 2007, a retrofit Nalco-Mobotec ROFA/RotaMix APC system was commissioned on Units 1&2.

Photograph courtesy of powerofcoal.com
Posted 26 Jul 2009

Abbreviations

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 02-Apr-2016

Home