What Mississippi Silicon does

Mississippi Silicon, LLC is a privately-held manufacturer of raw silicon metal that operates a single 174,000-square-foot production facility in Burnsville, Mississippi (Tishomingo County). The facility is the first new silicon metal plant built in the United States in over forty years, commenced operations in late 2015 following a $200 million capital investment financed primarily through KFW Bankengruppe of Germany and various federal, state, and local incentives, and has annual nameplate capacity of 36,000 metric tons — roughly 10% of all silicon metal consumed in the U.S. The company is majority-owned by Rima Holding USA, Inc. (affiliated with Brazil's Rima Industrial S/A, the world's fourth-largest silicon metal producer and itself part of the Vicintin family's metals portfolio), with Clean Tech I LLC holding a minority stake as a partnership of strategic investors and financial advisers.

Core production relies on modern submerged electric arc furnace technology processing quartz/gravel and a carbon source at superheated temperatures, combined with proprietary operating techniques transferred from Rima Industrial S/A and advanced process automation. The plant is supported by stable, competitively-priced electricity from the Tennessee Valley Authority (with 10-year rate stability), local raw material sourcing across Mississippi, Alabama, and Kentucky, and barge-terminal logistics access to both the Ohio River and the Gulf Coast via Yellow Creek Port. The facility is ISO 9001 certified (by Dekra, valid through August 2028) covering production and supply of refined silicon metal and its byproducts.

The company monetizes through B2B hardware sales of raw silicon metal in dark gray pieces or ground powder form, sold exclusively through Polymet Alloys, Inc. (a 30+ year industry veteran based in Birmingham, Alabama) into customer segments spanning aluminum (largest use case, alloy material for automotive and aerospace), automotive (lightweight aluminum-silicon parts), chemicals (silicones, sealants, lubricants), and semiconductors/solar (polysilicon feedstock). Silica fume, a byproduct of the smelting process, is marketed exclusively by RED Industrial Products. Mississippi Silicon supplements commercial operations with active participation in U.S. trade enforcement — co-petitioning for antidumping and countervailing duties on silicon metal imports from Russia, Malaysia, Bosnia & Herzegovina, Iceland, Kazakhstan (final duties up to 160%) and, most recently in April 2025, Angola, Australia, Laos, Norway, and Thailand (alleged dumping margins up to 337.84%).

Name

Mississippi Silicon

Legal name

Mississippi Silicon LLC

Website

https://missilicon.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Mississippi Silicon is a privately-held U.S. manufacturer of raw silicon metal that operates a single 174,000-square-foot submerged electric arc furnace facility in Burnsville, Mississippi. It supplies roughly 10% of U.S. silicon metal demand (~36,000 metric tons annually) to aluminum, automotive, chemical, semiconductor, and solar industries via exclusive sales partner Polymet Alloys.

Ownership category

akta.pro rank

Product category

Silicon Metal Production

NAICS

Nonferrous Metal (except Aluminum) Production and Processing (3314), Primary Metal Manufacturing (331)

SIC

Miscellaneous Primary Metal Products (3390)

akta.pro primary industry

Silicon Wafers (Prime/Test/SOI) (HDAHAGAA)

Keywords

• Silicon metal production
• Ferroalloys manufacturing
• Submerged arc smelting
• Industrial silicon supply
• Metallurgical furnace operations

Headquarters

HQ city

Burnsville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Silicon Metal Sales: Mississippi Silicon produces and sells raw silicon metal to customers in aluminum, automotive, chemical industries, solar cells, and semiconductors. The silicon metal is sold in dark gray pieces with metallic luster or ground into powder form.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Mississippi Silicon manufactures raw silicon metal at its Burnsville, Mississippi facility using Submerged Electric Arc Furnace technology, with an annual capacity of 36,000 metric tons representing approximately 10% of U.S. silicon metal demand. The product is sold in dark gray pieces with metallic luster or ground into powder form to industrial customers in aluminum, automotive, chemical, semiconductor, and solar industries, exclusively through commercial partner Polymet Alloys, Inc. Silica fume is generated and marketed as a production byproduct through RED Industrial Products.

Product overview

Mississippi Silicon operates as a single-site manufacturer of raw silicon metal, producing approximately 10% of all silicon metal used in the United States. The company operates one production facility in Burnsville, Mississippi, and does not offer a modular software platform. Its core product is raw silicon metal produced via submerged arc furnace technology, with silica fume as a byproduct. The company sells its products through exclusive commercial partner Polymet Alloys, Inc.

Differentiator

Problem solved

Functional benefit

Products and services

• Silicon Metal (Raw Silicon) Raw silicon metal produced through submerged arc furnace processing, used as a base material or critical additive in thousands of products including aluminum alloys, silicone chemicals, polysilicon for solar cells, and semiconductors. Sold in dark gray pieces with metallic luster or ground into powder form.
• Silica Fume A byproduct of silicon metal production generated at the Burnsville facility, marketed exclusively by RED Industrial Products for use in construction materials and other applications requiring high-purity silica.

Quantifiable outcome

• Approximately 10% of all silicon metal used in the United States
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered major, core and minor.

• REC SiliconmajorStrategic or Co-development Partner · 23 August 2022Signed memorandum of understanding (MOU) to work together to help establish a low-carbon and fully traceable U.S.-based solar supply chain. Companies committed to negotiate a raw material supply agreement.
• Polymet Alloys, Inc.coreChannel Partner/ Reseller/ DistributorCommercial partner and exclusive silicon sales representative for Mississippi Silicon with more than thirty years of experience in silicon metal sales in the United States.
• Tennessee Valley Authority (TVA)coreTechnology or IntegrationElectricity partner providing stable, competitively-priced electric power. One of the largest and most diversified power suppliers in the US and a United States government-owned and self-financed public power company. TVA power rates expected to remain stable for the next ten years.
• Rima Industrial S/AcoreTechnology or IntegrationTechnology partner and parent company of Rima Holding USA. Fourth largest silicon metal producer in the world, providing proprietary operating techniques and expertise.
• RED Industrial ProductsminorChannel Partner/ Reseller/ DistributorExclusive marketer of silica fume (a byproduct of silicon metal production).
• Yellow Creek PortminorOthersNearby port facility providing direct access to both the Ohio River and Gulf Coast through adjacent barge terminal for raw material delivery and product distribution.
• Northeast Mississippi Community College (NEMCC)minorStrategic or Co-development PartnerWorkforce development partnership through Tiger Apprenticeship Program. Received $100,000 donation from Mississippi Silicon for workforce training and HVAC lab addition.
• Tishomingo County Career and Technical Center (TCCTC)minorStrategic or Co-development PartnerMississippi Silicon provided approximately $122,000 in financial support (part of ~$250,000 total improvements) for training facilities, equipment, and recruitment materials for industrial maintenance technician training.

Scale indicators13 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• Dow Inc. Dow Inc., through its wholly owned Dow silicones business (formerly Dow Corning), is one of the largest silicone chemicals producers globally. Dow is a downstream customer of Mississippi Silicon's silicon metal, using it as a key feedstock for silicone production in sealants, lubricants, and adhesives.
• Wacker Chemie AG: Wacker Chemie is a German chemical company that produces polysilicon for semiconductors and solar, plus silicon and silicones across industrial markets. While upstream silicon metal is among Wacker's inputs, it operates one tier downstream and represents an adjacent competitor in silicon materials and a potential polysilicon customer for Mississippi Silicon's higher-purity output.
• Shin-Etsu Chemical: Shin-Etsu Chemical is a Japanese chemical giant that produces polysilicon, silicon wafers, and rare-earth magnets. As one of the world's largest polysilicon and silicon wafer producers, Shin-Etsu competes with Mississippi Silicon's downstream customers in the silicon materials supply chain and represents a global benchmark for silicon industry pricing.
• OCI Company: OCI is a Korean/Dutch producer of polysilicon and silicon materials with US operations including a polysilicon plant in Oregon. OCI operates downstream of Mississippi Silicon in the silicon value chain and competes in polysilicon supply for solar and semiconductor markets, sharing end-customers with Mississippi Silicon's silicon metal output.

Emerging players

• Hemlock Semiconductor: Hemlock Semiconductor is a US-based polysilicon producer owned by Dow and Corning, serving solar and semiconductor industries with a Tennessee facility. Hemlock operates downstream of Mississippi Silicon, converting silicon metal into higher-purity polysilicon, and shares the US semiconductor materials customer base.
• REC Silicon: REC Silicon is a US- and Norway-headquartered polysilicon producer for solar and semiconductor applications with a Moses Lake, Washington facility. REC signed an August 2022 MOU with Mississippi Silicon to establish a low-carbon US solar supply chain, positioning it across the silicon value chain from Mississippi Silicon's output.

Direct peers

• Rima Industrial S/A: Rima Industrial S/A is a Brazilian ferroalloy and non-ferrous metals producer (fourth largest silicon metal producer globally) and the majority owner of Mississippi Silicon through Rima Holding USA. Rima is both parent-affiliated technology partner (supplying proprietary operating techniques) and a direct competitor in global silicon metal markets.
• Elkem: Elkem is one of the world's largest silicon metal and ferrosilicon producers, headquartered in Norway and owned by China National Bluestar. Elkem produces silicon metal via similar submerged electric arc furnace technology and competes directly with Mississippi Silicon in global silicon metal supply for aluminum, chemical, and solar end markets.
• Ferroglobe: Ferroglobe (NASDAQ: GSM) is the only other major silicon metal producer in North America, formed from the merger of Globe Specialty Metals and Grupo FerroAtlántica. Mississippi Silicon and Ferroglobe have jointly filed multiple anti-dumping petitions, making them direct competitors in the same domestic silicon metal market with comparable submerged arc furnace technology.

Regional players

• Qinghai Asia Silicon Industry Co. Qinghai Asia Silicon Industry is one of the largest silicon metal producers in China with substantial export volumes into global markets. While operating primarily from China and not directly competing in the US market, it is one of the producers whose imports are subject to the AD/CVD petitions Mississippi Silicon has actively pursued.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mississippi Silicon