Compact Membrane Systems expanding in New Castle with help from state grants


Compact Membrane Systems Inc. (CMS), a 30-year-old Delaware company, chose New Castle for a $3.1 million facility to address massive market demand.

CMS formerly operated its entire operation in a location on Water Street in Newport. The company recently moved much of its operations to a temporary site on Reads Way in New Castle near where construction on its new facility is underway.

The expansion includes building 10,864 square feet of research and development and manufacturing-focused lab spaces along with more than 4,216 square feet of new space. The company also plans to add a minimum of 38 new full-time employees to its current staff of 19 over the next three years.

Founded in Wilmington in 1993 by former DuPont scientist Stuart Nemser and now led by his daughter, CMS develops and provides technology that captures and reduce greenhouse gas emissions.

CMS has evolved from a small, research-based company using federal grants for R&D projects to a rapidly growing commercial entity planning to combine commercial success with social responsibility with products that capture and reduce greenhouse gases, a release stated.


To further its goals, the company company raised $16.5 million in a Series A venture capital round in 2023.

The company considered moving to locations closer to investors and potential customers, including Houston, and areas further to the west.

A release stated that the company’s Delaware roots, a history of hiring local talent and commitment to community involvement and sector leadership drove its decision to continue to expand in Delaware.

The Delaware Prosperity Partnership supported CMS’s request to the Council on Development Finance for a Graduated Lab Space Grant of up to $760,480 and a Jobs Performance Grant of up to $115,000 from the Delaware Strategic Fund. Distribution of these grants is dependent upon the company meeting commitments.

The partnership is a public-private economic development organization.

“CMS has grown up as a Delaware company and, through this state support, is excited to cement our future in Delaware,” said Erica Nemser, CMS’s CEO, who also chairs the Delaware Sustainable Chemistry Alliance Board. “We love the resources and opportunity Delaware has to offer, from excellent scientific and technical talent to the commitment to manufacturing advanced technology to address climate emissions.”