Seldersec

About

Seldersec is a private headquartered in Netherlands specializing in Biomass, Biogas, Hydrogen.

Selders Engineering & Contracting (SEC) focuses on upgrading organic residue streams from industries and agriculture into valuable renewable energy products. Core offerings include on-site biodigesters for food waste and agricultural residues, renewable natural gas (biomethane) production, sustainable biomass energy, and circular economy solutions. The company provides engineering services, project development support, technology selection, and financing advisory for renewable energy and waste-to-energy projects. SEC has 20+ years of experience in the renewable energy sector and works with feedstocks including food waste, agricultural residues, energy crops, and timber co-products. Services span consulting, engineering, project development, and investor support.