Biogas and Power to X

Biogas plants, large common plants as well as the smaller plants for single farms, have many positive environmental effects, including reduced nitrogen leaching and fewer odors. Moreover, it is often economically beneficial to set up a biogas plant.

The biogas is sold to cogeneration plants, industrial companies, and the natural gas grid (when upgraded), consumed locally in a CHP-plant in order to produce electricity and heat, or converted to fuels in a Power to X process. Selling to transport systems or ferry services via the natural gas network is also an intriguing possibility, which is being developed. Biogas production from manure is socioeconomically the cheapest way to reduce CO2 emissions.

PlanEnergi offers consultancy through all phases in the planning of biogas plants: 

  • Master plans and basis documents for decisions in transition to renewable energy sources and conversion from individual heat supply
  • Regulatory approvals – local plan, EIA, environmental and project approval
  • Analyses of biomass potential
  • Calculations of rentability
  • Biogas planning for the total catchment area
  • Organisation of actors, company establishment, contracts etc.
  • Design of biogas plants
  • Composition of applications
  • Tender
  • Contracts with plant suppliers
  • Assistance during commissioning
  • Supervision
  • Technical due diligence

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Selected projects

Unlike the classical methanol production method based on highly carbon intensive steam reforming of hydrocarbons, eREACT provides significant CO2 savings, since it absorbs the CO2 content of the biogas used as a feedstock. Compared to another electricity driven methanol production method using electrolysis, eREACT demonstrates to consume less electricity and utilise CO2 directly form the biogas
The goal of this project is to evaluate Danish investment options for hydrogen (H2) and CO2 infrastructure to support green fuel production in the context of an integrated, sector-coupled European energy system. The project will address current plans and potential build-outs, assessing both the value of H2 and CO2 grids and storages in an uncertain European energy transition.
The project encompasses some of the best existing modelling tools, which focus on different aspects of PtX, from analysis at project level with a strong representation of PtX plants, over district heating and long-term storages to international markets for power and hydrogen.


In line with the expansion of biogas production in Denmark, we see a tendency towards the establishment of new and larger units


The purpose of the project is to reduce costs for and the climate impact from the production of bio-natural gas, i.a. with a focus on reducing energy consumption, increased biomass yield during pretreatment, reduction of methane loss during slurry handling and at the plant, etc.


PlanEnergi is the project manager for the Danish Agency for Agriculture’s project “Advisory scheme for joint biogas plants and their suppliers of manure on options to reduce the residence time of manure in barns and warehouses 2018 – 2020”