Request for proposals for Technical and Safety Assessment of the Hydrothermal Carbonization Plant (PCH-CDMX), Mexico City Title : Technical and Safety Assessment of the Hydrothermal Carbonization Plant (PCH-CDMX), Mexico City Reference : 100015770 Process : RFP Description : GGGI Mexico invites eligible firms/entities to submit proposals for the following assignment: Technical and Safety Assessment of the Hydrothermal Carbonization Plant (PCH-CDMX), Mexico City. PROJECT BACKGROUND: Mexico City generates around 5,000 tonnes per day of Organic Fraction of Municipal Solid Waste (OFMSW), part of which is collected separately and sent to Mexico Citys largest composting plant, the Bordo Poniente Composting Plant (PC BP). However, due to the sheer amount of OFMSW received (800 1,250 tonnes per day), the PC BP faces significant capacity challenges to adequately manage the entirety of OFMSW, turning instead to long term accumulation and storage. This, in turn, transforms the PC BP into a net source of greenhouse gases (GHGs), particularly methane (CH4), due to the anaerobic conditions present within the accumulated material. The Mexico City Hydrothermal Carbonization Plant (PCH CDMX) emerged as an alternative to provide a more agile management of the OFMSW, reducing the GHGs emissions associated with OFMSW management, while converting solid waste into valuable hydrochar, which has potential both as an industrial feedstock and as a soil amendment. Although Phase I of the PCH CDMX finished construction in 2023, the conception and design of the project took place immediately before and during the COVID 19 pandemic. During this period, engineering projects underwent rapid transition by switching to remote work and implementing digital technologies such as BIM, many of which still lack industry-wide maturity in Mexico. The adoption of these changes, in combination with the novel and disruptive nature of the PCH CDMX project, reduced opportunity for iterative validation during the design process. The complicated scenario limited the ability of the design firm to perform a sufficiently robust analysis of all applicable standards, regulations, and best practices, including environmental and social criteria such as the IFC Performance Standards, relevant to a technology with minimal industrial deployment worldwide (the Standards). Likewise, the PCH CDMX, being composed of multiple systems frequently supplied by different vendors, has resulted in a fragmented technological architecture in which subsystems operate under proprietary control platforms with limited interoperability, preventing the plant from functioning as a fully integrated whole and unnecessarily increasing its operational complexity. This, and the delays commonly experienced in construction during this time, required the provision of immediate case-specific adjustments for arising needs in civil works and associated process systems, resulting in suboptimal configurations on issues such as placement of elements, piping configuration, zone classifications, and related technical considerations. An imminent Phase II of the PCH CDMX entails the upscaling of the facility by constructing an additional ten (10) HTC modules within the PC BP premises. Furthermore, the Government of Mexico, the National Autonomous University of Mexico (UNAM) and G2E seek to replicate the HTC technology in other locations at both national and international levels. The strategy for large scale deployment is based on the original model for the PCH CDMX, but the model must first be brought into full compliance with the Standards. Although regulations specific to HTC are still non existent, regulations applicable to specific types of elements and processes do exist and can be integrated by an experienced consultant into a structured compliance repository applicable to the HTC infrastructure. For this project, GGGI seeks to engage a competent Consulting firm (hereinafter referred to as Consultant) which will work in support of G2E, with documented experience in the conceptual and detailed engineering, construction, and commissioning of chemical production facilities. The Consultant shall perform a technical and safety audit based on the technology used on the PCH CDMX and shall create a structured compliance repository and a mapped list of all PCH CDMX elements subjected to their requirements. Afterwards, the Consultant shall propose all the required modifications and evaluate their inclusion in the reference model once G2E has updated the reference model. Proposed Activities and Scope of Work 1) Proposed Activities for the Overall Project The project will initiate with a comprehensive familiarization phase, during which the selected Consultant will conduct site visits to the PCH-CDMX to gain a detailed understanding of the facility, its current configuration, and operational context. This phase will include physical on-site inspections complemented by a thorough review of all available technical documentation. Building on this, the project will undertake a systematic compliance assessment. This will involve the compilation of an exhaustive set of applicable standards, regulations, and international good practices into a structured compliance repository. In parallel, all components and systems of the PCH-CDMX will be mapped against these requirements to establish a clear compliance baseline. Subsequently, a detailed risk analysis will be carried out based on the current state of the project, identifying gaps, vulnerabilities, and areas requiring improvement. Based on these findings, the Consultant will develop a set of recommended technical and operational modifications, including associated cost estimates. These recommendations will serve as inputs for G2E to update and refine the projects reference model. Finally, the project will assess the impact of fully implementing the proposed modifications on the overall risk profile of the PCH-CDMX, providing a forward-looking perspective on risk reduction and compliance enhancement. All activities will be documented through comprehensive technical reports, including photographic evidence from site visits, detailed risk assessments, and a clear description of proposed modifications and their implications. For more details on the Scope of Work, please refer to the Terms of Reference (TOR) document attached. IMPORTANT TIMELINES: This project is expected to be completed within 5 months following contract signing. The tender submission deadline is 01 June 2026 at 16:00 KST (Korean Standard Time). If any bidder requires clarification on the TOR or any part of the tender documents, GGGI will be pleased to provide clarification, provided that requests are received no later than seven (7) days prior to the submission deadline (i.e., by 16:00 KST on 25 May 2026). Interested parties are required to register on the GGGI e-Green Procurement Portal (https://in-tendhost.co.uk/gggi). HOW TO OBTAIN THE DOCUMENTS: Documents can be accessed via the e-Green Procurement Portal by selecting View Details on the relevant notice and then clicking the Tender Application button. If you are a new supplier, you will be required to register your details. If you have an existing account, you will need to login to the portal. Please refer to the guidance documents under the `Supplier Guidance` area of the portal for further information. ONLINE TENDER MANAGEMENT: Once in the Tender Management Area for the tender, there are five possible tabs: Tender, `Tender Documents`, Correspondence, Clarifications and History. Select the 2nd tab (`Tender Documents`) where you will find useful information regarding the RFP. Scroll down to the heading Tender Documents Received where you will be able to view / download the documents. OPTING IN & OPTING OUT: Please note that you may be required to Opt In before you can start populating your response. The Opt Out functionality will also be available throughout the duration of the tender process. Opting out will give you the option of declaring you no longer want to receive any further communication in relation to this tender along with the opportunity of providing comments and feedback for this decision. You can choose to Opt In at any time during the tender process if you initially decided to Opt Out. SUBMITTING YOUR RESPONSE VIA THE PORTAL: Please note that you may be required to Opt In to be able to submit a response through the portal. Tenderers will be required to upload any mandatory Placeholders (i.e. specified documents) within the `Tender Documents` tab. The ability to attach additional documents may also be available. Your proposal will not be submitted until you click `Submit Return`, located towards the bottom of the screen. On clicking `Submit Return`, you will receive a receipt confirming that your proposal has been submitted to GGGI. Please read Instructions on How to submit the Proposal. NOTIFICATION EMAILS: To ensure you receive email alerts and notifications from our system, please add the email domain `@in-tendorganiser.co.uk` to your Safe Senders list. Tender Link : https://in-tendhost.co.uk/gggi/aspx/Tenders/Current
