Renew Energy provides engineering and consulting services to all stages of a biogas project. We provide operational support to new and existing biogas plants. In addition, we can be in charge of authority approval work.

Renew Energy can further contribute to establishing attractive financing of new projects.

We make well-documented digestion tests, for instance if a project includes biomasses that are not well known, or an existing biogas plant wants to have biomasses studied. Digestion tests not only determine the biomass composition, but also the biogas potential.

Typically, a biogas project consists of four stages: project development, plant design, plant construction, and commissioning. After commissioning, Renew Energy will provide operational support.

Renew Energy undertakes the whole turnkey contract of the project from the very beginning to the handover of the plant.

In the project development stage, our first evaluation of the project will be a screening report followed by a feasibility study.

The first step of the project development is to evaluate the biomasses available for the biogas production. Renew Energy has more than 25 years’ experience in biogas potentials of different biomasses. Already at this stage of the project, a well-documented biogas calculation is prepared.

Renew Energy will carry out analyses and digestion tests to determine the gas potential of the biomasses where composition and/or gas potential are not known.

During the project development, information is gathered to show the overall opportunities and identify possible challenges. The project development stage will clearly demonstrate whether the project can be implemented successfully.

At this stage, we also examine financing possibilities. Renew Energy can assist our customers with establishing attractive financing solutions.

The purpose of the initial screening and feasibility study is to define an economic project and development plan for executing the design, permitting, financing, and construction of the biogas project.

The initial screening may include:

  • Determination of biomasses available, quantities, and calculation of biogas
  • Sales of biogas and fertilizer products
  • Plant size
  • Block flow diagram
  • Evaluation of possible pretreatment methods for feedstock
  • Evaluation of possible aftertreatment technologies for degassed biomass

In addition, the feasibility study may include:

  • Project description
  • Design basis
  • Mass balance and energy balance
  • Process description
  • Layout
  • Process flow diagram
  • Preliminary budgets

Renew Energy provides technical design of biogas plants and biorefineries adapted to the requirements of the individual customer. The basis is a well-defined analysis of the biomass available.

Every single project is unique and our starting point is to design plants that are adapted and optimized in relation to the solution giving maximum value to the individual project. Renew Energy’s plant design is based on our profound knowledge of the biological process and experience with specific equipment.

Depending on the requirements of the customer and local conditions, we provide Basic Design and Detailed Design.

Basic Design is a continuation of the feasibility study, and the overall parameters of the project are set in the form of a process flow, specifications to equipment, and P&ID diagrams etc.

In the Detailed Design stage, the design will be completed and working drawings will be prepared according to which the plant will be built. Often, Detailed Design is completed in collaboration with the contractor in charge of the building and construction work. Renew Energy or the owner selects the contractor.

The contractor and Renew Energy can assume all responsibility during the construction of the plant. In case of international projects, Renew Energy cooperates with the local contractor throughout the whole construction period – as owner’s engineer.                                

Renew Energy works out test descriptions and protocols for the start-up and commissioning of the plant. We monitor the whole process in order to secure that the plant will meet the design specifications.

At the start-up of the plant, the digesters will be filled with inoculum (digester contents from a well-functioning biogas plant). Afterwards, biomasses are added according to a carefully worked-out plan for the start-up. Renew Energy supervisesthe whole commissioning. After the commissioning of the plant, a 120 hours’ operational test will be completed to demonstrate that the plant meets the design basis.

Renew Energy is experienced in securing steady and controlled start-up and commissioning of processing plants.

The first years of operation are the most critical years for a processing plant. Extra focus will be demanded, and a service contract with Renew Energy on operational support in the first years will secure a healthy and well-functioning biogas process. Thus, your biomasses will give you maximum gas yield. Renew Energy constantly monitors and optimizes the biogas process and has more than 25 years’ experience with biogas operation. A well operated biogas process will increase the gas yield by 10 to 20 percent.

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