Catalyst Connection
Find manufacturersAdd your company
Catalyst Connection

Copyright 2026 Catalyst Connection

All rights reserved

Directory

  • All manufacturers
  • Maryland manufacturers
  • New York manufacturers
  • Ohio manufacturers
  • Pennsylvania manufacturers
  • West Virginia manufacturers

Company

  • About us
  • Blog
  • Contact us

Support

  • Terms of service
  • Privacy policy

Stay up to date

Get regional manufacturing news, events, and resources from Catalyst Connection.

Subscribe to the newsletter
Back to results
  1. Home
  2. ›
  3. Manufacturers
  4. ›
  5. New York
  6. ›
  7. Northeast Power Systems, Inc. (NEPSI)
Northeast Power Systems, Inc. (NEPSI) logo

Northeast Power Systems, Inc. (NEPSI)

Claim this profile
Queensbury, NY 12804
518-792-4776
Visit website

At a glance

Employee size
51-200
Organization type
Public Company
Headquarters
Queensbury, NY
Founded
1995
UEI
MLJ4T2K44WW4
CAGE
48EW9

About

Founded in 1995, Queensbury-based Northeast Power Systems (NEPSI) manufactures custom medium-voltage metal-enclosed capacitor banks and harmonic filter banks for power factor correction and harmonic mitigation. Its engineering team brings more than 50 years of combined experience in industrial, utility, and commercial power systems, and supports projects from system studies through commissioning and maintenance. NEPSI is an American Superconductor company with an ISO 9001:2015-certified quality management system.

Capabilities and markets

Products

Manufacturing processes

Materials worked

Service offerings

Economic activities

End markets served

Energy segments

Grid ComponentsSolarWind

Directory supply chains

Classification

NAICS codes

Certifications and registrations

Certifications

  • ISO 9001:2015 Quality Management System

  • IEEE C37.20.3-2001 / TUV Rheinland Certification

  • C22.2 No. 190-M1985 / TUV Rheinland Certification

  • ANSI C57.16 Dielectric Withstand Testing

  • UL 508A and C-UL 508A, File E200828

  • UBC Zone 4 Seismic Certification

  • FireTrace Factory-Trained Technician Certification

  • Mine Safety and Health Administration Safety Program

    Compliance program

  • American Welding Society Fabricator Certification

  • TVRHEINLAND

    Quality certification

  • CSAC222NO190

    Quality certification

  • MSHA

    Quality certification

  • AWSFABRICATORCERTIFICATION

    Quality certification

Related manufacturers

  • Controllix Corporation logoControllix CorporationWith more than 40 years in the field, Controllix Corporation manufactures metal-enclosed capacitor banks and harmonic filters that help utilities and industrial customers manage power quality. The Walton Hills company designs each system to the application and carries projects from consultation through manufacturing, installation and field service. Its equipment is CSA-certified for UL and CSA requirements, and its metal-enclosed capacitor banks are certified for Zone 4 seismic compliance.WALTON HILLS, OH
  • Southern Tier Technologies logoSouthern Tier TechnologiesBased in Endwell, New York, Southern Tier Technologies designs and manufactures power-quality equipment for mission-critical electrical systems. Its founding partners bring more than 20 years of experience and have developed hundreds of solutions for customers around the world, with the company’s work centered on clean, reliable power. A notable in-house product is the Tier 500 dynamic power-factor correction unit, which uses a compact design and sub-cycle response to address demanding facility needs.ENDICOTT, NY
  • Utility Systems Technologies logoUtility Systems TechnologiesFounded by former General Electric engineer and RPI professor Dr. Robert Degeneff, Utility Systems Technologies is known for solving difficult power-quality problems at critical facilities. The upstate New York company shipped its first SureVolt in 2000 and now has more than 1,000 installations in over 40 countries, with products designed and built in the United States for industrial and commercial users. UST is ISO 9001:2015 certified.WATERVLIET, NY
  • Enspec Power logoEnspec PowerFounded in 1998 by siblings who wanted a more flexible alternative to large engineering firms, family-owned Enspec Power designs and delivers power-quality engineering for large electricity users. From its St Helens base, the UK company combines network studies and surveys with engineered equipment such as power-factor correction and point-on-wave switching, with particular experience in renewables, utilities and manufacturing. Enspec also operates an audited integrated management system with ISO 14001 certification and maintains a UK factory in Washington.NEW YORK, NY
More manufacturers in New York

Contact information

Website

nepsi.com

Emails

  • sales@nepsi.com

Phone numbers

  • 518-792-4776

Social

Locations

Northeast Power Systems, Inc. (NEPSI) location map for 66 CAREY RD

66 Carey Rd

Queensbury, NY 12804

Warren County

Get directions

Is this your company?

Claim this profile to keep it up to date, showcase your capabilities, and reach new buyers.

Claim this profile

Directory source

Source
nepsi.com
Updated
Sep 2026