Maabjerg Energy

Problem statement

To develop sustainability and energy efficiency in farming and communities by using biomass slurry and co-feedstocks as a clean, renewable energy source for district heating applications with the product of co-products.

Executive summary

Slurry from a large number of farms and a variety of suitable wastes are co-digested to produce biogas for heat and power generation. Maabjerg BioEnergy is able to cover the demand for district heating in 5000 homes and power Slurry from a large number of farms and a variety of suitable wastes are co-digested to produce biogas for heat and power generation. Maabjerg BioEnergy is able to cover the demand for district heating in 5000 homes and power consumption of 12,000 homes. The model also has plans to evolve towards a multi-feedstock biorefinery model consumption of 12,000 homes. The model also has plans to evolve towards a multi-feedstock biorefinery model

Value chain description

The Maabjerg BioEnergy biogas plant, one of world’s largest, was designed primarily to treat animal slurries and eventually to form part of a multi-feedstock biorefinery concept (a 5-platform (C5&C6 sugar, lignin, biogas, bio-methane, electricity & heat) biorefinery for the production of bio-methane, bioethanol, fertilizer, electricity and heat from wood chips, straw, manure, sewage sludge and MSW). The biogas plant was born as an environmental project aiming to reduce runoff of nutrients into groundwater, rivers and bays, while contributing to develop the local farming economy and preserving employment. The aim was furthermore to support environmentally friendly energy production by exploiting biomass resources for the benefit of the local community. Maabjerg BioEnergy biogas plant is currently operated on manure, sewage sludge and whey (production 18 106 m3 biogas annually). The expansion will include an ethanol plant, which will use 300,000 tonnes of straw and other annual plants to produce 2nd generation bioethanol, molasses (for biogas) and lignin (for combustion). The liquid part is degassed in the biogas plant, and the energy of the solid part is used in the cogeneration plant. Excess heat from the power plant will be used internally in e.g., pre-treatment, heat treatment and distillation

Market deployment considerations

The global Biogas market size was valued at USD 64714.07 million in 2022 and is expected to expand at a CAGR of 6.7% during the forecast period, reaching USD 95491.5 million by 2028

Environmental considerations

Anaerobic digestion has CO2 reduction and waste mitigation potential

Social Considerations

From a social perspective there are three major benefits of the project. First, agricultural production levels are maintained. Second, imported energy costs are saved and generated electricity can be exported to the grid. The total socio-economic benefit is calculated to be 1 billion DKK over the next 20 years

Stakeholders Involved

Farmers, Technology providers and End users (biogas-heat and electricity, biomethane as fuel)

Feedstock used

Wood chips, straw, manure

TRL

9

Value Chain name

Maabjerg Energy

Type of process

Anaerobic digestion

Technology output

Biomethane, biofertilizer, bioenergy

Processing capacity point of view (annual feedstock requirement)

650,000 tonnes of biomass annually

Country

Ireland

Year

2012