REC Solar Grade Silicon LLC runs the idled Moses Lake silane and polysilicon plant at 3322 Road N NE in Grant County, Washington, served by Grant County PUD. About 5.5 average megawatts of Grant PUD load disappeared with its 2025 shutdown, and a 56-megawatt electrical substation was built for the plant expansion.

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Overview Profile Facility Permits and agreements Related records Sources

Overview

Average demand: 5.5 MW; retired · Mar 17, 2025

In September 2026 REC Silicon was asking the city to hold off on road improvements near its currently idled manufacturing facility, saying the expense could interfere with efforts to restart operations. REC's end products all require ultrapure silane, which is sold as is, as silicon granules from fluid bed reactors or as rods from Siemens reactors.

Profile

Electricity and grid: Grant County PUD #2 provides the electrical power services for the SGS manufacturing facility, and a 56-megawatt electrical substation with associated switches and transmission lines was built for the expansion. About 5.5 average megawatts of the 2025 Grant PUD load reduction was the shutdown of REC Silicon in Moses Lake, and the PUD said REC's reduction in power demand lowers its daily average total power obligation to customers by less than 3%. REC and Grant County PUD signed a 20-year power sales agreement in 2011, and the company pays the rates listed in a public rate schedule. The PUD said REC may keep its energy needs on reserve by paying the minimum monthly charge, as a temporary measure not intended for long-term curtailment. Grant County PUD is registered as a Balancing Authority.

Ownership: REC Solar Grade Silicon LLC operates at 3322 Road N NE, Moses Lake, WA 98837. Anchor AS is REC Silicon's largest shareholder and is a wholly owned subsidiary of Hanwha Corporation and Hanwha Solutions.

Facility

Activity: Ultrapure silane, silicon granules and silicon rods
Industry: Industrial
Site type: Facility
Operating status: Idled
Reported Sep 9, 2026
Demand flexibility: keep its energy needs on reserve by continuing to pay the minimum monthly charge

Permits and agreements

Agreement: 20-year power sales agreement

Related records

OrganizationRoleBasisOpen

REC Solar Grade Silicon LLCOperatorContact REC Silicon Anchor ASEquity investorstorage.mfn.se

Sources

PublisherReferenceTypeOpen

yoursourceone.comREC Silicon's Road Improvements Request | Columbia Basin | yoursourceone.comSource

apps.ecology.wa.govapps.ecology.wa.govSource

columbiabasinherald.comGrant PUD financials solid with above-projected revenues | Columbia Basin HeraldSource

app.leg.wa.govapp.leg.wa.govSource

columbiabasinherald.comREC Silicon, Grant PUD sign power contract | Columbia Basin HeraldSource

basinbusinessjournal.comREC Silicon reopens, closes in Moses Lake during bumpy journey | Basin Business Journal - Central Washington's Farm NewsSource

nerc.comwww.nerc.comSource

recsilicon.comContact REC SiliconSource

storage.mfn.sestorage.mfn.seSource

data.epa.govdata.epa.govSource

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Facilities operated by REC Solar Grade Silicon LLC

Permits: Washington Ecology's 2009 air permit response notes the existing A-series fabric filters are permitted under REC's existing permit, Approval Order 07AQ-E223.