This is a service / maintenance or supply contract in Saint Augusta, Minnesota. Contact the soliciting agency for additional information.

This Addendum shall be appended to and become a part of the original specifications and proposal form. Provide a complete and fully automated 1.0 to 1.25-megawatt, or scalable unit that can produce hydrogen at a minimum of 17 kg/hr at 30 bar output pressure, on-site water electrolysis system to generate hydrogen and oxygen utilizing a Proton Exchange Membrane (PEM) stack with a modular containerized design for outdoor installation. See enclosed summary of St. Cloud's Green Hydrogen Project included in the Invitation to Bid Packet that describes how the hydrogen generation equipment will be used. The City's goal is to fully utilize and expand upon renewable energy production for facility needs and beyond to help achieve local, state, and national decarbonization goals. The next phase will focus on replacing the natural gas and fuel oil used at the NEWRF for process and building heat with a carbon-free energy source and providing a viable carbon-free fuel for transportation vehicles. Green hydrogen produced on-site is the carbon-free fuel that could meet this need and would provide additional usable products of pure oxygen and thermal heat. The focus of the project is the effective integration of a water-based electrolyzer into an advanced Water Resource Recovery Facility (WRRF). Products from the electrolysis process consist of green hydrogen, green oxygen, and thermal energy, which unlike most industrial hydrogen production facilities can be beneficially used at a WRRF to meet process needs and reduce the facility's greenhouse gas (GHG) emissions. Not only can this project reduce GHG at the NEWRF, it can also result in the production of carbon-free fuel sources to help reduce GHG from the transportation industry and to decarbonize the heating fuel sources. The St. Cloud NEWRF is the perfect facility to demonstrate this innovative approach as it brings critically required and desirable characteristics to this project. As demonstrated by the attainment of renewable energy goals, the City serves as an environmentally progressive community with a demonstrated track record for implementing industry leading technologies at its WRRF. Innovations incorporated into this facility have rendered its electrical grid demand net-zero and carbon-free due to the utilization of solar power, combined heat and power (CHP) units to recover energy from its biogas, and advanced nutrient and biosolids resource recovery systems. The City has also already acquired partial state funding and is in the process of designing the electrolyzer system at full-scale demonstration to expand its renewable energy production even further. The WRRF operates as an advanced biological nutrient removal (BNR) system treating approximately 10 million gallons per day (mgd) of wastewater. Results can therefore be easily scaled to both smaller and larger WRRFs. To our knowledge the proposed system for the City of St. Cloud constitutes the first electrolyzer to be installed at a WRRF with beneficial use of all byproducts in the world and the first of its kind holistic integration into a WRRF's renewable energy management system and resource recovery operation. Pairing of hydrogen electrolyzers with renewable energy sources enables the production of 1) green hydrogen that can be stored for on-site energy use or sold as a commercial product to offset operational costs of WRRFs, 2) green oxygen that can aid in decarbonizing the activated sludge process at WRRFs, and 3) thermal energy that can be beneficially used at WRRFs for heating of buildings, water, or digesters and replace fossil fuel thermal energy sources. General Equipment Description Provide a complete and fully automated 1.0 to 1.25-megawatt, or scalable unit that can produce hydrogen at a minimum of 17 kg/hr at 30 bar output pressure, on-site water electrolysis system to generate hydrogen and oxygen utilizing a Proton Exchange Membrane (PEM) stack with a modular containerized design for outdoor installation. Total hydrogen capacity to meet or exceed 17 kg/hr at 30 bar output pressure. Electrolysis power supply to accept 3 phase 4160VAC 60hz medium voltage. Additional Information Please provide the following: Options for recovery of rejected oxygen and heat Lead-time and delivery terms Container(s) footprint Standard documentation including; scope of works, installation site requirements, and interconnection points Ambient temperature range Turndown ratio including: Start-up time - Hot start and cold start Hydrogen purity with and without dryer - Include price adder for dryer Water purity and consumption requirements, including cut sheets of water purification system Electrical systems, including cut sheets of: electrolyzer switchgear and cabling, electrode stacks, medium voltage transformer, AC-DC rectifier, and chiller Stack life expectancy, including electrical efficiency degradation of both the stacks and the system Description of process performance and alarms monitoring systems, including warranty, and OEM services Description of annual maintenance requirements, including list and pricing of necessary consumables and recommended spare parts Compliances & certifications, including performance guarantees and factory testing protocols Supplemental equipment information will be used for criterion scoring.