Bigadan

Who owns Bigadan?

Bigadan is currently owned by Arjun Infrastructure Partners through Infrastructure Alliance Europe (IAE-1) (2021 vintage), since 2021.

Hand-verified · updated 2026-07-07

About Bigadan

Bigadan is a Danish renewable energy company that develops, builds and operates biogas plants converting organic waste, including manure, food industry by-products and industrial organic residues, into biogas, biomethane and nutrient-rich fertilisers. Headquartered in Skanderborg, it draws on more than forty years of operating experience and today runs nine operational biogas facilities producing roughly 1.3 TWh of renewable energy a year. The group structures its activity across agriculture, large-scale municipal waste treatment and industrial partnerships, and has extended into liquefied biomethane and biogenic CO2 capture and storage. Its landmark assets include the Kalundborg Bioenergi plant, developed alongside industrial partners, and it has contributed to the construction of dozens of biogas plants across multiple countries.

Ownership journey

Bigadan, a contraction of Biogas Danmark, was founded in Denmark in 1982, building on farm-scale biogas development work that began in 1978. In 2021 Arjun Infrastructure Partners acquired a minority stake in the company through its Infrastructure Alliance Europe strategy, backing a national and international expansion of the biogas platform. Arjun remains an active investor and subsequently increased its holding, taking majority ownership through its Infrastructure Alliance Europe 3 fund. No exit or secondary transaction has been recorded, and the company continues to operate as a standalone Danish biogas platform under this backing.

Under PE ownership

Since Arjun's 2021 investment, Bigadan has scaled its installed base to nine operational facilities and lifted annual output past the one terawatt-hour milestone it first crossed in 2020, reaching around 1.3 TWh. The company has broadened beyond power generation into grid-injected biomethane, converting plants from combined heat and power to gas injection, and into liquefied biomethane and biogenic CO2 for carbon capture, usage and storage. It has commissioned large-scale projects, including a facility for SBS Aabenraa designed to process about one million tonnes of waste annually. Under its expanded ownership the group targets output above 2 TWh by 2027 and aims to replicate its model in international markets.