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Healy Unit 2 Power Plant

This 50-MW power plant increases our baseload of coal-fired generation and will provide long-term stability, since coal prices over time have proven to be significantly less volatile than oil or gas prices.

Permitting

Consent Decree Stipulations

The Consent Decree does not require any mandatory shutdown dates for neither Healy Unit 1 nor Healy Unit 2. GVEA’s board of directors retains full control of decisions regarding shutdown of either plant.  

Restarting Healy Unit 2 will:

History of the Plant

In 1989, the U.S. DOE’s Clean Coal Technology Program selected Healy as a demonstration plant to use experimental technology to burn waste coal. Healy Unit 2 began burning coal in 1998 and generated power intermittently through 1999 in its testing phase. When the plant failed a 90-day commercial operation test, it was placed in warm lay-up status in early 2000. Talks between AIDEA and GVEA to resolve disputes were unsuccessful. In 2005, AIDEA filed a lawsuit against GVEA. The purchase of the power plant ended the lawsuit.

1993 Final Environmental Impact Statement
(Volume 1 | Volume 2)

Construction Funding

Department Of Energy

$120 million

Alaska Legislature

$25 million

AIDEA

$150 million

GVEA & Usibelli Coal Mine

$10 million plus in-kind contributions

 

Timeline

1989

DOE selected Healy Unit 2 (formerly HCCP) as a Clean Coal Technology Program demonstration plant.

1995-1997

Healy Unit 2 constructed.

1997-2000 Healy 2 Demonstration run (failed).
2000 Plant placed in warm lay-up status.
Feb. 2009 GVEA and AIDA reach sale agreement.
2009 - 2013

Negotiations were finalized in December 2013 when the purchase agreement was signed on December 4.

2014 - 2015 After 18 months of retrofitting and refurbishing Healy Unit 2, which included additional pollution controls, updating systems and replacing obsolete controls, on May 28, 2015, the plant was fired on oil for the first time since 2000. On August 4, 2015, Healy Unit 2 was fired on coal.
2016 - 2017

On March 3, 2016, when the plant was operating in a start-up condition, transferring from oil to coal, Healy Unit 2 experienced a fire/explosion in the coal feed system.

On November 2, 2016, Healy Unit 2 suffered damage to the coal feed system due to spontaneous combustion, commonly known in the industry as a "puff."

At GVEA's August 28, 2017 board meeting, the directors authorized moving forward with proposed modifications to Healy Unit 2's coal feed and fuel transport system.

Both Unit 1 and Unit 2 have undergone significant environmental upgrades. Unit 1 was successfully commissioned six months early. Unit 2's environmental controls are installed and will be commissioned once the plant is back online, anticipated in the fall of 2018.

2018

Jan - June: Demolition of old fuel transport system and construction/installation of the redesigned system.

July 2: First-fire on oil (ignition fuel), followed by system startup and testing.

July 28: First-fire on coal, followed by tuning and testing.

Aug 16: Achieved full-load operation, followed by additional tuning and testing.

Sep 14: Successfuly completed 30-day 85%-availability run to achieve commercial operation/acceptance.

Oct 10: Planned outage to install SCR catalyst (the final emission control component).

Nov - Dec: Commercial operation.

2019 

Jan - April: Commercial operation.

April: Scheduled outage took place, to perform annual maintenance.

May: Resumed commercial operation.

 

On March 3, 2016 when the plant was operating in a start-up condition opeating on oil, Healy Unit 2 experienced a fire/explosioin in the coal feed system.