The efficient way to produce green hydrogen
Quest One (formerly H-TEC SYSTEMS) develops and manufactures proton exchange membrane (PEM) electrolyzers and stacks for efficient, reliable and cost-effective green hydrogen production. Our Modular Hydrogen Platform with 10 MW modules enable fast rollout of plants with electrolysis capacity of 10 to 100 MW and more – ideal for industrial-scale hydrogen production. The system is ready for indoor installation on pre-assembled skids. Compression, storage and downstream uses are easy to integrate. Unrivalled system efficiency, high availability, and design for easy maintenance result in low hydrogen production costs and safe, reliable operation.
Reliable EPC for hydrogen and Power-to-X solutions
Everllence delivers engineering, procurement, and construction (EPC) solutions for hydrogen and Power-to-X projects. Our modular plant systems are designed for scalable capacities, with standardized packages in the 50 MW and 100 MW range which reduce both risk and lead time. We integrate electrolyzer systems, balance of plant (BOP) systems, compression, storage, controls, and commissioning into one optimized scope – ensuring delivery is on schedule and on budget. With lifecycle service and training from PrimeServ, your plant ramps up safely, operates reliably, and remains cost-efficient over its entire lifetime.
Maximize your success with energy consulting
Everllence energy consultancy services help you define the most economical path to decarbonization. By building a digital twin of your system, we simulate scenarios with different components and evaluate them by total cost of ownership (TCO), levelized cost of energy (LCOE), and CO2 impact to define the best business case. Our experts align technical options with regulations, incentives, and financing to improve project viability. From opportunity screening and road mapping through stakeholder engagement to implementation support, we help you deliver measurable efficiency gains, lower operating costs, and clear decisions that stand up to scrutiny.
Your system never stands still – neither do we
Industrial operations never pause, and neither does our commitment to your success. Everllence PrimeServ is our global service brand, ensuring maximum availability and efficiency of your assets across their entire lifecycle. From expert maintenance, fast spare parts supply, and digital diagnostics to proactive upgrades and performance optimization, we stand by your side – worldwide. Whether your requirement is planned or unexpected, we respond quickly, minimize downtime, and unlock long-term value. PrimeServ delivers trusted expertise and continuous innovation to keep your system performing at its very best.
Discover new business opportunities in decarbonization
Decarbonization is good business: Not only will it make you more sustainable, but it can unlock synergies and even open up new markets. For example: if you are capturing carbon, why not make use of it? We’re ready to help you make the most of your decarb journey.
Talk to our expert in hydrogen production
Together we can identify the most cost-efficient and sustainable technologies to realize your hydrogen production plans. Let’s discover new opportunities in decarbonization!
We connect the dots on your decarbonization journey
Decarbonization is our business
Successful decarbonization is about integrating the right technologies at the right time, in the right way. By applying modular, scalable, and future-ready solutions we help you connect the dots on your decarbonization journey. This enables you to unlock new efficiencies, accelerate implementation, and achieve more than you thought possible.
