PGE asks DEQ to allow early closure of Boardman Plant

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Portland, Ore., April 5, 2010 — Portland General Electric Company submitted a proposal asking the Oregon Department of Environmental Quality for rule revisions to allow the utility to meet new environmental standards by closing the Boardman Power Plant in 2020, at least 20 years ahead of schedule.

As part of the proposal, PGE also will achieve major emissions reductions with new controls and operational changes during the remaining years that the power plant is in service.

Previous coverage:

PGE plans to switch fuels at coal fired power plant

PGE’s proposal calls for changes to the state’s Regional Haze Plan. Under the proposal, PGE will cut haze-causing emissions of sulfur dioxide and nitrogen oxides from the Boardman plant by:

* Installing new, burners by July 1, 2011. The new burners are expected to reduce nitrogen oxides emitted by the plant by nearly 50 percent.

* Using coal with a lower sulfur content to fire the plant’s boiler. This will be completed in two stages as PGE’s current coal supply contracts expire. An initial 20 percent drop in permitted sulfur dioxide emissions will take effect in 2011. A further reduction in 2014 will bring allowed sulfur dioxide emissions down by a total of 50 percent from current permit levels.

* Closing the plant in 2020, ending all coal-related emissions at least 20 years ahead of schedule and significantly reducing Oregon’s contribution to global warming.

Under a separate rulemaking procedure with DEQ, PGE already has agreed to install controls that are expected to eliminate 90 percent of the plant’s mercury emissions by 2012. Current construction schedules should allow PGE to meet this deadline a year early, in 2011.

The DEQ now will review PGE’s proposal, and is expected to submit a recommendation to the state’s Environmental Quality Commission for action later this year.

PGE expects to also file an addendum to its most recent integrated resource plan with the Oregon Public Utility Commission later this month, requesting commission acknowledgement of a 2020 closure date for Boardman contingent on DEQ approval of the new haze rule.

Certain other regulatory and legal issues must also be resolved for PGE to move forward with the 2020 plan. The original resource plan, filed in November 2009, recommended installation of extensive emissions control retrofits on the Boardman Plant, at an estimated cost of $520 million to $560 million. These controls would allow continued operation of the plant in compliance with existing DEQ rules, through at least 2040.

PGE announced in January that it intended to pursue an alternative operating plan with a 2020 closure date and began extensive discussions with stakeholders to seek further input and gauge support.

Detailed economic and risk analysis PGE conducted as part of the resource planning process has confirmed the original plan to install all controls and operate until 2040 is still the best choice available under current rules if the 2020 option is not approved.

If the 2020 plan is allowed to proceed, PGE will evaluate replacement resources for Boardman, including natural gas, biomass, and other renewable technologies and submit recommendations to the OPUC as part of a future resource plan.

Portland General Electric Company is a vertically integrated electric utility that serves about 816,000 residential, commercial and industrial customers in the Portland/Salem metropolitan area of Oregon.

 

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at Jennifer.Runyon@ClarionEvents.com.

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