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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, 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: Xcel has proposed to repower Units 1&2
with gas turbines, after which their current maximum output of 175 MW will be
increased to 290 MW.
Photograph by Jerry Miller and courtesy of Xcel Energy
Posted 5 May 2002 |
Clay Boswell
Location: MN
Operator: Minnesota Power
Configuration: 2 X 70 MW, 1 X 350 MW, 1 X 535 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 |
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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 |
Laskin
Location: MN
Operator: Minnesota Power
Configuration: 2 X 58 MW
Operation: 1953
Fuel: 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.
Photograph courtesy of Allete
Posted 29 Jul 2008/td>
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Riverside 7&8
Location: MN
Operator: Xcel Energy
Configuration: 1 X 142 MW, 1 X 231 MW
Operation: 1964-1987
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 is 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 18 weeks 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 have been the recipient of 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
Photograph courtesy of Xcel Energy
Posted 1 Jul 2006 |
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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
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.
Photograph by Jonathunder (wikipedia)
Posted 28 Mar 2012 |
Silver Lake Unit 1
Location: MN
Operator: Rochester Public Utilities
Configuration: 1 X 8 MW
Operation: 1948
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 |
