Located 5 miles southwest of downtown Memphis, the Allen Combined-Cycle Plant is a 1,100 MW natural gas-fired power plant that replaces Tennessee Valley Authority’s (TVA) almost 60-year-old Allen Fossil Plant. Kiewit was the EPC contractor for the new 2x1 combined-cycle facility, which features two GE 7HA.02 combustion turbines and a Toshiba steam turbine.
A consortium of TIC – The Industrial Company (TIC) and Mitsubishi Heavy Industries America, engineered, procured and constructed the Petra Nova Carbon Capture Project, the first in the U.S., at NRG’s WA Parish Generating Station. The post-combustion carbon capture system reduces the facilities emissions by 90 percent and removes 5,000 metric tons of carbon dioxide daily. Captured from a 240 MW slipstream of flue gas, the carbon dioxide is compressed and transported to a mature oil field where it is injected to release more oil.
As part of its commitment to expand fuel diversity, Tennessee Valley Authority replaced its two oldest coal-fired units at the Paradise Fossil Plant with a natural gas-fired power plant. Kiewit was selected as the EPC contractor for the new 3x1 combined-cycle facility, which now generates 1,100 MW of power.
Indianapolis Power and Light Company (IPL) provides electric service to more than 470,000 users in the area and surrounding communities, with Petersburg and Harding Street Plants, the company’s two biggest plants, accounting for a majority of that generation. In order to meet EPA Mercury and Air Toxics Standards (MATS) compliance, IPL is retrofitting five units at these sites with new environmental control equipment.
Mass. Electric Construction Co (MEC) installed an 880 KW roof mounted PV system on the Waltham High School in Massachusetts. The scope of work included PV modules- 3080 each LG250 mods; inverters 2 each- Solaron 333kW; an Hb Solar Mounting System (100% ballasted) including ballast; Solar BOS fused Combiner Boxes; Data Acquisition System (DAS); and (8) 200A rated Fusible DC Disconnect.
PSE&G selected KHMA, a joint venture comprised of Kiewit Power Constructors, Henkels & McCoy, and Aldridge Electric, to construct the Bergen-Linden Corridor Overhead project. Designed to replace the existing double circuit 138kV transmission system from Bergen to Linden with a double circuit 345kV transmission system, the project will eliminate electric system capacity issues in northern New Jersey and provide better power quality in the region. PJM Interconnection determined the new transmission system was necessary to ensure reliable electric service, eliminate anticipated transmission constraints, and respond to PJM/Federal Energy Regulatory Commission (FERC) mandated infrastructure expansion. The KHMA team is responsible for removing the existing transmission lines and lattice structures, clearing, temporary access roads and bridges, erosion and sedimentation controls, foundation installation (drilled piers and vibratory caissons), steel pole erection, hardware and insulator installation, conductor, shield wire stringing, and fiber optic splicing.
KCP&L and Westar Energy selected the team of Kiewit and Sargent & Lundy LLC to engineer, procure and construct the retrofit to the 1500 MW plant. The La Cygne Generating Station Environmental Retrofit Project includes the installation of two Hitachi wet FGD scrubbers and new Hamon fabric filters on Unit 1 and Unit 2; and a selective catalytic reduction (SCR) system, low-NOx burners and over-fire air system on Unit 2 of the facility.
Working in a limited space with a five-week outage duration, the Kiewit team engineered, procured, constructed and performed startup of the air quality control system to tie it into Brayton Point’s Unit 3 at New England’s largest fossil fuel-fired power station.
The project included the design and construction of transmission structure foundations, including upgrading and converting existing 138kV to 230kV with new structures, power conductors and OPGW. The project also incorporated the demolition and reinforcement of existing 138kV structures.