NEPSI

The Most Trusted Name in Power Factor Correction and Harmonic Filtering

Corporate

NEPSI is the leading global provider of medium-voltage metal-enclosed power capacitor banks and harmonic filter banks for use on electric power systems. Founded in 1995, the New York based company has grown to be the world's market leader and most trusted name for the supply of... [read more]

Products

NEPSI offers medium voltage solutions to mitigate common power quality concerns in the areas of power factor correction and harmonic distortion. Review NEPSI's product offering page to discover what products meet your needs.

Services

NEPSI is committed to supporting you throughout your project life cycle with our professional staff of engineers, technicians, and industry experts specializing in the application, design, and support of metal-enclosed power capacitor banks and harmonic filter systems.

Resources

NEPSI believes that a well-informed customer is our best customer. As such, we offer page after page of technical notes, calculators, spreadsheets and other useful information for you to read and learn. These resources will better inform you about our products and services and help you to make the right choice.

Customer Satisfaction

NEPSI is committed to delivering the highest quality products and services to our customers. Our ISO 9001:2015 certified quality management system utilizes process audits and stakeholder feedback to help us identify opportunities for improvement, implement the necessary corrective actions, and continuously refine our procedures. Customer feedback plays a vital role in this process, helping us understand the evolving needs and expectations within the power industry. Our ultimate goal is complete customer satisfaction, and we work tirelessly to ensure that every experience with our company reflects our dedication to quality and reliability.

If you'd like to leave us feedback on your experience with NEPSI, please click here to complete our online form.

Updated: October 27, 2025