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The Harding Street Station (formerly Elmer W. Stout Generating Station) was a 12-unit, 1,196 MW
nameplate capacity Nameplate capacity, also known as the rated capacity, nominal capacity, installed capacity, or maximum effect, is the intended full-load sustained output of a facility such as a power station,
, gas-, coal, and oil-fired
generating station A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Power stations are generally connected to an electrical grid. Many pow ...
located at 3700 South Harding Street, Indianapolis. It is owned by
AES Indiana AES Indiana, formerly known as Indianapolis Power & Light Company (also known as IPL or IPALCO), is an American utility company providing electric service to the city of Indianapolis. It is a subsidiary and largest utility of AES Corporation, wh ...
, a subsidiary of
AES AES may refer to: Businesses and organizations Companies * AES Corporation, an American electricity company * AES Data, former owner of Daisy Systems Holland * AES Eletropaulo, a former Brazilian electricity company * AES Andes, formerly AES Gener ...
(formerly known as Indianapolis Power & Light).


Environmental impact


Sulphur dioxide

With its oldest coal-fired unit dating back to 1958, the plant was ranked 12th on the United States list of dirtiest power plants in terms of
sulphur dioxide Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic acti ...
emissions per megawatt-hour of electrical energy produced from coal in 2005. The new flue gas desulphurization system (FGS), also known as a scrubber, and the new stack are expected to reduce
sulfur dioxide Sulfur dioxide ( IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic ...
(SO2) emissions by 97 percent, and
NOx In atmospheric chemistry, is shorthand for nitric oxide () and nitrogen dioxide (), the nitrogen oxides that are most relevant for air pollution. These gases contribute to the formation of smog and acid rain, as well as affecting tropos ...
emissions, as well as other pollutants, by some 87 percent. IPL stopped burning coal at the Harding Street facility in 2016 and retrofitted the units to natural gas.


Coal ash ponds

On the south side of the former plant are a sequence of unlined coal ash ponds. As of 2019, there were 27 groundwater monitoring wells. Between 2016 and 2019, 24 of these were polluted above federal advisory levels of
molybdenum Molybdenum is a chemical element with the symbol Mo and atomic number 42 which is located in period 5 and group 6. The name is from Neo-Latin ''molybdaenum'', which is based on Ancient Greek ', meaning lead, since its ores were confused with le ...
, boron,
lithium Lithium (from el, λίθος, lithos, lit=stone) is a chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid ...
,
sulfate The sulfate or sulphate ion is a polyatomic ion, polyatomic anion with the empirical formula . Salts, acid derivatives, and peroxides of sulfate are widely used in industry. Sulfates occur widely in everyday life. Sulfates are salt (chemistry), ...
,
arsenic Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, bu ...
,
antimony Antimony is a chemical element with the symbol Sb (from la, stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient ti ...
,
selenium Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and telluriu ...
, and
cobalt Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, ...
.


See also

*
List of power stations in Indiana This is a list of electricity-generating power stations in the U.S. state of Indiana, sorted by type and name. In 2019, Indiana had a total summer capacity of 26,665 MW through all of its power plants, and a net generation of 102,505 GWh. The c ...
*
Global warming In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate variability and change, Climate change in a broader sense also includes ...


References


External links



at SourceWatch Energy infrastructure completed in 1941 Energy infrastructure completed in 1947 Energy infrastructure completed in 1958 Energy infrastructure completed in 1961 Energy infrastructure completed in 1967 Energy infrastructure completed in 1973 Energy infrastructure completed in 1994 Energy infrastructure completed in 1995 Energy infrastructure completed in 2002 Coal-fired power stations in Indiana Natural gas-fired power stations in Indiana Oil-fired power stations in Indiana Buildings and structures in Indianapolis 1941 establishments in Indiana {{Indiana-struct-stub