Bigadan A/S

What Bigadan A/S does

Bigadan A/S is a Danish privately held end-to-end biogas and circular energy company founded in 1982, operating through three business areas — Sourcing, Bioenergy, and Commodities. Sourcing purchases, processes, and documents organic residues with full traceability for guaranteed outlet into Bigadan's own plants. Bioenergy develops, constructs, and operates modular anaerobic digestion biogas plants across Agriculture, Metropolis, and Industry concepts, using a standardized modular design spanning 250 to 2,700+ tonnes per day with corrosion-resistant tanks up to 9,500 m³ and proprietary reception, pasteurization, heat exchange, and biological gas purification systems. The Commodities division sells certified biomethane (CBG and LBG), biogenic CO2 (including cryogenic liquid CO2), CDR credits, gas certificates (RedCert, ISCC, GoO, POS, Nabisy), and E-fuel feedstock.

The company owns and operates 10 Danish biogas plants with aggregate annual energy output exceeding 1 TWh, plus an international EPC footprint across 17 countries (Germany, France, UK, Sweden, Finland, Faroe Islands, Israel, Spain, Ukraine, USA). Customer base spans enterprise and government: Novo Nordisk and Novonesis supply biotech residues to the jointly controlled Kalundborg Bioenergi with Ørsted; Arla runs a biogas truck fleet on Bigadan-supplied CBG; Copenhagen Municipality routes food waste to Solrød; REMA 1000 uses liquid biogenic CO2 for refrigeration; INEOS ships biogenic CO2 to the Nini field for permanent geological storage; and The Economist Group purchases CDR credits. Bigadan was first in Denmark to deploy cryogenic CO2 liquefaction (Horsens, 2023) and underground CO2 storage (Kalundborg, 2024), and has pre-qualified for a 100,000 tonnes/year CCS bid under Denmark's 28.7 billion DKK support scheme for 2030–2044.

Revenue mechanics combine long-term industrial offtake agreements, biomass processing and disposal fees, EPC plant sales, certificate transactions (gas certificates and CDR credits), and physical product sales (CBG/LBG, liquid CO2, fertilizer). Pricing is bespoke and not publicly disclosed. Ownership is concentrated with founder/Chairman Karsten Buchhave, with Arjun Infrastructure Partners joining as a large minority shareholder in 2021 to fund expansion. No public listing exists and no revenue figures are publicly disclosed.

Name

Bigadan A/S

Legal name

Bigadan A/S

Website

https://bigadan.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

51–100 employees

Short description

Bigadan A/S is a Danish end-to-end biogas company founded in 1982 that develops, owns, and operates modular anaerobic digestion plants across Denmark and 17 countries, selling certified biomethane, biogenic CO2, CDR credits, gas certificates, and EPC plant solutions to enterprise and municipal customers including Novo Nordisk, Arla, and Ørsted.

Ownership category

akta.pro rank

Product category

Biogas and Circular Energy Services

akta.pro primary industry

Biogas/RNG Plant Development, EPC & Project Delivery (EUAAAEAH)

akta.pro secondary industries

Anaerobic Digestion (AD) & Biogas/RNG Production (Organics Feedstocks) (BPALAEAC), Biogas Upgrading to RNG & Injection/Fueling (Gas Cleanup, Compression) (EUAIAEAF), Food Waste-to-Energy (Organic Waste AD & Thermal) (EUACAIAH), RNG Upgrading, Purification & Conditioning (Membranes, PSA, Amine, Cryogenic) (EUAAAEAD), Anaerobic Digestion Biogas Power (Agricultural & Industrial AD) (EUACAIAD)

Keywords

• Biogas plant development
• Biomethane production
• Anaerobic digestion systems
• Biogenic CO2 capture
• Circular energy services

Headquarters

HQ city

Skanderborg

HQ country

Denmark

HQ region

Europe

Offices11 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Biomethane / Biogas Sales: Sale of certified biomethane (compressed biogas/CBG and liquefied biogas/LBG) to industrial customers and transport operators. Bigadan supplies carbon-neutral compressed biogas to Arla's fleet and operates CBG/LBG supply agreements nationally and internationally.
2. CDR Credits (Carbon Dioxide Removal): Bigadan issues CDR credits representing 1 tonne of biogenic CO2 permanently stored underground. Credits are certified to EU guidelines and verified by independent third parties. Bigadan has bid on storing 100,000 tonnes CO2 annually from 2030–2044.
3. Gas Certificates: RedCert, GoO, POS, and Nabisy certificates sold to companies needing to meet blending mandates, ETS obligations, displacement requirements, or ESG/SBTi reporting. Bigadan handles full documentation and tracking.
4. Biogenic CO2 Sales (CCU): Capture and sale of biogenic liquid CO2 to food industry, PtX plants producing green fuels for shipping/aviation/heavy transport, and greenhouses for photosynthesis. CO2 is purified and liquefied at cryogenic facilities.
5. EPC Contracts and Plant Development: Engineering, procurement, and construction contracts for biogas plants. Bigadan builds, commissions, and sometimes operates plants for third parties (e.g., SBS Aabenraa K/S, clients in Germany, France, UK, Sweden, USA, Finland, Faroe Islands, Israel, Spain, Ukraine).
6. Biomass Sourcing and Processing Fees: Bigadan sources and processes organic residues and biomass from industrial clients, agricultural partners, and municipalities, providing guaranteed outlet and disposal services for organic waste streams.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels7 records

Core offering

Bigadan develops, constructs, operates and owns end-to-end biogas systems, covering every step from biomass sourcing and organic waste management through anaerobic digestion, gas upgrading, CO2 capture, and fertilizer production. The company sells certified biomethane (CBG/LBG), biogenic CO2, gas certificates, and CDR credits through three interconnected business areas: Sourcing, Bioenergy, and Commodities.

Product overview

Bigadan A/S operates as an end-to-end biogas and circular energy company organized into three interconnected business areas: Sourcing (responsible procurement of organic residues with full traceability and ESG data), Bioenergy (development, construction, and operation of biogas plants across three concepts — Agriculture, Metropolis, and Industry), and Commodities (commercial delivery of biogas products and carbon reduction solutions). The Commodities division encompasses specific product lines including Gas Certificates, CDR Credits, Biogenic CO₂, E-fuel, CBG (Compressed Biogas), and LBG (Liquefied Biogas). Bigadan Labs supports all areas with internal R&D. The company owns and operates biogas plants across Denmark and internationally, managing the full value chain from biomass sourcing through biogas production to certified energy products and carbon removal credits.

Differentiator

Problem solved

Functional benefit

Brands

• Bigadan Labs: Innovation and research division working alongside clients on biogas optimization, testing new biomass types, and developing improved biogas systems through laboratory facilities in Denmark.
• Bigadan Sourcing
• Bigadan Bioenergy
• Bigadan Commodities
• Bioman

Quantifiable outcome

• 1 TWh+ annual energy production milestone exceeded in 2020
• +8 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• ØrstedcoreStrategic or Co-development PartnerPartnership with Ørsted to establish and operate Kalundborg Bioenergi, a full-scale biogas plant converting organic residues from Novo Nordisk and Novozymes insulin and enzyme production into sustainable energy. This is a flagship industrial symbiosis project.
• Novo NordiskcoreStrategic or Co-development PartnerNovo Nordisk supplies yeast cream and biotech production biomass to Kalundborg Bioenergi for processing into biogas and fertilizer. ~300,000 tonnes processed annually. Supports Novo Nordisk's sustainability goals and circular economy ambitions.
• Novonesis (formerly Novozymes)coreStrategic or Co-development PartnerNovonesis supplies fermentation residues (yeast cream) from enzyme production to Kalundborg Bioenergi. ~300,000 tonnes of combined biotech biomass processed annually. Partnership celebrated as a 'double win' and prime example of true circular economy.
• Nippon GasescoreStrategic or Co-development PartnerLong-term partnership focused on bio-based CO2. Nippon Gases invested in the cryogenic facility at Horsens Bioenergi to capture, refine, and liquefy CO2 from biogas production. Nippon Gases then supplies the liquid CO2 to REMA 1000 for refrigeration in delivery trucks. Part of Carbon Capture Utilization (CCU) initiative.
• REMA 1000minorChannel Partner/ Reseller/ DistributorREMA 1000 is the first grocery chain in Denmark to use alternative cooling systems (liquid biogenic CO2) for delivery truck trailers without diesel. Receives liquid CO2 from Bigadan/Nippon Gases partnership for climate-efficient food transport.
• INEOScoreStrategic or Co-development PartnerPartnership for CO2 storage: Bigadan captures and purifies biogenic CO2, which INEOS transports by ship to the Nini oil field in the North Sea for permanent geological storage. INEOS receives CO2 at Esbjerg port and manages the offshore storage operations. Supports Bigadan's BECCS value chain.
• Nykredit and KlimateminorGTM or Marketing PartnerNew partnership between Nykredit and Klimate to support carbon removal technologies and CO2 storage in Denmark. Bigadan participates as a biogas/CCS partner in this financial-institution-backed climate initiative.
• CarbonfutureminorChannel Partner/ Reseller/ DistributorCarbon broker facilitating the transaction between Bigadan and The Economist Group for high-quality, durable carbon removal based on BECCS. Ensures transparency, credibility, and alignment with emerging European carbon removal legislation.
• LYDTRYKminorGTM or Marketing PartnerPodcast production agency collaborating with Bigadan to produce the 'Vi ved trods alt mere end de fleste' (Grønne Gasser) podcast series covering biogas, circular economy, and CO2 topics.

Scale indicators13 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• Gasum: Finnish/Nordic biomethane producer and LNG/CBG distributor. Comparable in Nordic geography, biomethane production from organic waste and CBG/LBG distribution to heavy transport.
• WELTEC BioPower: German manufacturer and operator of biogas plants with modular steel-tank designs (250 kW–10 MW). Direct comparable in modular plant engineering and international EPC references.
• Krieg & Fischer Ingenieure: German biogas EPC and engineering consultancy designing large-scale AD plants across Europe. Comparable as engineering-led AD plant developer with industrial and agricultural references.
• EnviTec Biogas: Germany-based full-service biogas company covering planning, EPC, operation and biomethane upgrading. Comparable in EPC + own/operate model and European geographic reach.
• Nature Energy: Denmark's largest biogas/RNG producer with farm-scale and industrial anaerobic digestion plants. Most direct comparable in geography, business model (sourcing → biogas → upgrading → grid/transport) and customer segments (agriculture, industry, municipalities). Acquired by Shell for ~$2B in 2022.
• PlanET Biogas: German EPC and operator of farm and industrial biogas plants across Europe. Direct competitor in modular AD plant design, EPC delivery and agricultural/municipal feedstock processing.

Broad incumbents

• Air Products: Global industrial gas major with significant biogenic CO2 and hydrogen/CCS activities. Comparable as an incumbent in captured CO2 supply, cryogenic liquefaction and CCS infrastructure that Bigadan is plugging into.
• Hitachi Zosen Inova (Schmack Biogas): Global EPC incumbent in energy from waste including biogas (via Schmack Biogas). Comparable as a broader-portfolio incumbent offering AD plant EPC alongside other waste-to-energy technologies.
• Ørsted: Danish renewable energy major and Bigadan's JV partner at Kalundborg Bioenergi. Comparable as a Danish green-energy incumbent with overlapping biogas/green-gas strategy and CCS/PtX ambitions.

Others

• Carbonfuture: Carbon removal broker and registry that already intermediates Bigadan's BECCS credits (The Economist deal). Comparable as ecosystem participant in CDR credit issuance, traceability and corporate offtake — not a direct competitor but a channel dependency.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/bigadan-a-s

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Bigadan A/S