Wisconsin Power and Light told the Public Service Commission of Wisconsin in an Oct. 28 quarterly update that the Dry Flue Gas Desulfurization (DFGD) installation at the coal-fired Edgewater Unit 5 was basically completed in the third quarter of this year.
In June 2013, the commission had issued an order approving a Certification of Authority to install this DFGD at the Edgewater Generating Station on Unit 5. The estimated cost of the approved project was $413,710,000, excluding AFUDC. As of this Oct. 28 update, the project is currently forecasted to be completed for approximately $241,900,000; excluding AFUDC.
The utility wrote: “This project will be completed under the originally authorized budget due to a series of factors that include favorable market timing, favorable contracting and procurement strategy and reductions of project scope deemed unnecessary as project engineering progressed. A more complete accounting of this will be included in the project final report.”
Construction activities commenced in March 2014. The project reached mechanical completion in April 2016. It reached tie In outage completion in May 2016 and substantial completion in August 2016. At the end of September 2016, the project was on schedule and 99% complete.
Edgewater Unit 5 is located along the shoreline of Lake Michigan. It was placed into service in 1985 and has a nameplate capacity of 380 MW. Selective catalytic reduction (SCR) for NOx control on the unit was completed in 2012.
SCR at coal-fired Columbia Unit 2 to be completed in 2018
Wisconsin Power and Light, on behalf of itself and co-owners Wisconsin Public Service Corp. and Madison Gas and Electric, filed a separate Oct. 28 update with the commission about an SCR installation on the coal-fired Columbia Energy Center Unit 2. In January 2015, the commission issued a Certification of Authority for this project. The estimated cost of the approved project was $150,000,000, excluding AFUDC.
Engineering and permitting activities are approximately 70% complete. In September 2015, WPL signed a contract with GSL Columbia SCR Joint Venture for the EPC services. GSL is a joint venture between Graycor Industrial Constructors and Sargent & Lundy LLC. GSL subcontracted the SCR technology supply to Andritz Inc.
Engineering, procurement, and construction activities continued during the third quarter. Overall progress remains on schedule. The anticipated in-service date for the SCR is April 30, 2018, said the update.
An Oct. 10 groundbreaking celebration marked the start of construction of this SCR project, said WPL, a unit of Alliant Energy (NYSE: LNT). “This project will further the plan to provide cleaner, cost-competitive and more efficient energy from the Columbia Energy Center to our customers.” said Terry Kouba, Alliant Energy Vice President–Generation Operations, in an Oct. 10 statement. “We are working to ensure that Wisconsin has the energy it needs to grow while minimizing our impact on the environment.”
The Columbia Energy Center is located south of Portage, Wisconsin. The facility consists of two coal-fired units – Units 1 and 2. These units began operation in 1975 and 1978, and have nameplate generation capacities of 512 MW and 511 MW, respectively.