Learn how you can customize the FastOx gasification system to best suits your needs.

Introduction to FastOx System Design Process

The FastOx® system design process is composed of three main stages: feasibility study, preliminary engineering, and Front End Engineering Design (FEED Engineering).
The feasibility study is the first step in the process. It is conducted to determine the potential of each system based on the feedstock and local economic factors. The study can be done before or after the purchase of a license, but prior to any preliminary engineering.
Preliminary engineering is the first step in the engineering design process. It requires Sierra Energy’s engineers to work with the assistance of an outside firm to provide a quote for the engineering. This quote is based on the optimal configuration of the FastOx system determined in the feasibility study.
FEED engineering involves two design stages focused on system development. The first stage of the process begins with designs for system configuration and major equipment. These designs are subsequently refined to a detailed construction design that includes minor equipment and a final CAD rendering.



Feasibility Study

Feasibility studies are techno-economic evaluations of each individual project. To provide this evaluation, Sierra Energy analyzes the anticipated waste streams using our proprietary FastOx® gasification model to quantify and optimize required inputs and resulting outputs for the custom project scenario. Engineers and financial advisers then analyze the economic impact, taking into consideration the project location and current market prices.
The results from this study are organized into three types of analysis: project evaluation, economic impact, and an optimization exercise.

  • The project evaluation uses the feedstock analyses provided to determine the technological capabilities of a FastOx gasifier to process a specific feedstock, and consequent oxygen and steam input requirements for the desired system. This evaluation also determines the estimated outputs for the desired end product.
  • The economic impact uses the required inputs and estimated outputs, among other factors, to determine the approximate capital and operational expenditures required for the system. This information is used to estimate ROI based on the specified feedstock and end product, as well as local and regional market rates.
  • The final analysis is an optimization exercise that looks at the viability of other system configurations and possible partnerships to improve feedstock efficiency.


These results are included in a comprehensive 40-page report containing custom analysis for the specific project. The analysis includes: feedstock feasibility, estimated equipment lists, end product yield comparisons, suggestions for optimizing energy efficiency, and custom economic evaluations.
A Project Economics Report requires the signing of an Non-Disclosure Agreement (NDA) and agreement to contractural terms and conditions. Both the NDA and terms and conditions are available upon request.
To complete a feasibility study, Sierra Energy requires a feedstock analysis of the desired feedstock which will be provided by the inquiring party. It must include approximate proportions and volumes for each feedstock used as well as a proximate and ultimate analysis for each feedstock. A proximate and ultimate analysis includes the moisture content, fixed carbon content, volatile organic matter, ash content, and heating value of the feedstock. These are determined by sending a sample of each feedstock to be sent to a lab for analysis. Contact Sierra Energy if you have questions regarding the location of a qualified lab.
Additionally, Sierra Energy requires each client to complete a questionnaire, which will provide us with information critical to understanding your specific project.
To get started on a feasibility study for your next project, please contact Sierra Energy today.



Preliminary Engineering

Preliminary Engineering is performed by Sierra Energy engineers with the assistance of a design partner. Each project will require additional information such as project scope, desired end product, site location, etc. so that our engineers can estimate the rigor of the design process. This stage helps them to collaborate and determine accurate quotes for the engineering process as well as determine initial logistics, permitting, equipment, and construction requirements.
Once a quote for the next engineering stages is obtained and approved, license holders can proceed with the FEED engineering process.



FEED Engineering

FEED Engineering begins with Sierra Energy engineers determining the major equipment requirements for the unique FastOx® system with the assistance of their design partners. They will also evaluate the systems processes and configuration as well as the alternatives to these through detailed calculations and equipment trade-off exercises. Finally, they will complete the preliminary CAD renderings of the system. The result of this initial process is a design of the best configuration of major equipment for the FastOx system as well as an estimate for the capital expenditure for the system within 20% certainty.
These designs are refined by Sierra Energy engineers to determine the minor equipment requirements and configurations. During this stage, our engineers work closely with sub-contractors who specialize in the configuration in each piece of major equipment to ensure that the system integrates properly and efficiently meets the projects’ specifications. The end product of the more detailed designs includes detailed designs for construction, a final CAD rendering, and an estimate for the capital expenditure for the system within 10% certainty.