Oregon agency nears permit decision for 653-MW Troutdale power plant

Troutdale Energy Center LLC is nearing a likely approval by the Oregon Department of Environmental Quality of an NPDES (wastewater) permit for the Troutdale Energy Center, to be located at the Troutdale Reynolds Industrial Park in Troutdale, Oregon.

The DEQ has a draft version of this permit out for comment until May 22. The plant will include turbine generators with natural gas as the primary fuel and No. 2 fuel oil as the back-up fuel. The discharge of wastewater will almost exclusively be composed of cooling water from the facility. The source of this water, prior to being used for cooling, will either be recycled treated wastewater from the City of Troutdale or groundwater.

The facility already holds an air quality permit and an NPDES general stormwater construction permit from DEQ. The stormwater permit was issued by DEQ’s agent, the City of Troutdale.

The proposed location of the Troutdale Energy Center (TEC) is on property owned by the Port of Portland near the confluence of the Sandy and Columbia rivers. The plant will include turbine generators with natural gas as the primary fuel and No. 2 fuel oil as the back-up fuel. The total nominal power generating capacity of the plant will be approximately 653 MW. The power generation will come from two separate power blocks: a combined-cycle power plant and a simple-cycle power plant.

  • The combined cycle plant, which will have a capacity of approximately 451 MW, will be composed of a single combustion turbine generator (CTG) followed by a heat recovery steam generator (HRSG). This HRSG will generate steam to be used in the steam turbine generator (STG). The exhaust steam from the STG will be cooled in a condenser, which will in turn be cooled by water from a large cooling tower. This cooling tower, which will be a mechanical draft, eight cell counter flow tower, will cool the water primarily through evaporative cooling.
  • The simple-cycle power plant, which will have a capacity of approximately 202 MW, will have two CTGs which will be cooled with an associated two-cell evaporative cooling tower.

Although neither the combined-cycle plant nor the simplecycle power plant is likely to be operated continuously through the permit term, the permit does not prohibit continuous operation, and the permit conditions conservatively assume continuous operation.

The website of the Oregon Energy Facility Siting Council shows that the siting application for this project is going through a contested review process and that Troutdale Energy Center LLC is a wholly owned subsidiary of Development Partners Funding I LLC. It shows a project contact as Willard Ladd, wladd@developmentpartners.com.

Said the Development Partners Group LLC website, which is the site that goes with that e-mail address: “Capital funding for the company is provided by Energy Investors Fund, a leading private equity fund manager devoted exclusively to the independent power and electric utility industries. Since its founding in 1987, the firm has mobilized capital for nearly 100 investments with a combined underlying asset value exceeding $7 billion.” Said the website about Ladd: “Mr. Ladd has over 20 years of experience in the power and energy infrastructure industry. Prior to Development Partners, he was a member of the management team that founded Sithe Energies, Inc., where he helped grow the company from 10 to over 2,000 employees and more than $1 billion in revenue.”

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.