TSI builds electrical power products to succeed, time after time.

The Ultimate Power Solution. TSI Power makes the highest-quality power solutions available. Our off-the-shelf and custom products are engineered to perform continuously – and reliably – at the outer limits of their stated specifications. Customers around the world rely on TSI Power to protect their mission-critical applications.

TSI Power Mural

Headquartered in Antigo Wisconsin, USA, TSI Power thrives on being located in a small community with a stable work force and ready access to major component suppliers. We value our suppliers and have developed long-term relationships in order to assure best quality and lead time for components.

We design, engineer, manufacture and service all of our products right here in north central Wisconsin. Because of our corporate culture and rigorous hiring standards, our employees have many years of on-the-job experience and employee turnover is extremely low. We believe that employee skills coupled with stability are the foundation to our ability to provide high quality power products.

With our nimble structure, we’re able to quickly provide the help and support our customers need, from sales to technical support to trouble shooting. Our customers find it easy to access TSI Power’s decision makers and technical resources, since they don’t have to go through multiple layers of people and departments. If you need help, we’re just a phone call or e-mail away – and we’ll respond within 24 hours.


Some of Our Customers

ABBAbbott LaboratoriesAgilent TechnologiesAir Liquide S.A.Alcoa CorporationAmazonAmerican AirlinesAmerican Electric PowerAppleApplied Materials, Inc.Archer-Daniels-Midland Company (ADM)Argonne National LaboratoryArizona State UniversityAtlas CopcoAT&T Inc.BAE Systems plcBaker HughesBarrick Gold CorporationBattelle Memorial InstituteBay Area Rapid Transit (BART)Bayer AGBechtelBurlington Northern and Santa Fe Railway (BNSF)BoeingBombardierBonneville Power AdministrationBritish Petroleum (BP)Brazilian Navy (Marinha do Brasil)Brookhaven National LaboratoryCanadian National Railway (CN)Canadian Pacific Railway (CP)City of Calgary, Alberta CanadaCME Group (Chicago Mercantile Exchange)ComcastConoco PhillipsConsolidated Edison (ConEd)Cornell UniversityCorningCrate & BarrelCurtiss-WrightDaisy BrandDallas Area Rapid Transit (DART)Dallas Fort Worth International Airport (DFW)Dominion EnergyDomtarDow ChemicalDuke EnergyDuPont de Nemours, Inc.Eastman KodakEaton CorporationEnbridgeEnergizerEntergyEli Lilly and CompanyE.ON SETelefonaktiebolaget LM EricssonExelonExxon MobilF. Korbel & BrosFastenalFederal Aviation AdministrationFirstEnergy CorpFluke CorporationFlorida Fish and Wildlife Conservation CommissionFramatomeG4SGeneral AtomicsGeneral DynamicsGeneral ElectricHess CorporationHoneywellIntelKinder MorganL3Harris Technologies, Inc.Michigan State University3M Company (Minnesota Mining and Manufacturing Company)Newmont CorporationNextEra Energy, Inc.NTT DoCoMoOccidental Petroleum Corporation (Oxy)Northeast Ohio Regional Sewer DistrictRockwell AutomationSchneider ElectricSiemens AGTelenor ASATeslaUnited States Air ForceUnited States Coast GuardUnited States Department of Defense (Pentagon)United States Department of EnergyUnited States Federal Reserve SystemUnited States National Park ServiceUnited States NavyUniversity of Texas at AustinUniversity of TorontoWalt Disney

Why You'll Love Us

High Technology Level
Shorter Lead Times
Enthusiastic Customer Support

Key Staff

Peter Nystrom
Peter Nystrom
Chief Executive Officer
David Nystrom
David Nystrom
President
Maria Maddix
Maria Maddix
Vice President of Operations
Nam Paik
Nam Paik
Vice President of Sales
Francis Phang
Francis Phang
TSI Power Asia-Pacific
Ujjwal Singh
Ujjwal Singh
Engineering Manager
Hans Ziegler
Hans Ziegler
Director Emeritus
We have used TSI Power’s ILC-1000MED4 (now ILC-1000-MED8) since 2000 to provide isolated, low-leakage power to our HRT retinal tomography. TSI has been a reliable supplier.

Tom Tomasso

Technical Manager
Heidelberg Engineering