Company lists · Data refreshed September 2026

Top 15 Biogas energy recovery companies based in Denmark

RevenueBase identified 55 biogas energy recovery companies headquartered in Denmark as of September 2026 and tracks 1,175 professional contacts across them, including 85 with verified work emails. Copenhagen is the largest hub.

This list covers biogas energy recovery companies headquartered in Denmark, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
55Companies
1,175Contacts tracked
85Verified emails
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The 15 largest biogas energy recovery companies based in Denmark

Ranked by team size
Top 15 of 55 biogas energy recovery companies based in Denmark, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to biogas energy recovery companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceOdense, DenmarkHQ checked Sep 16, 2026201-500216 contacts →

Indirect evidence

“We are turning waste into value.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceFredericia, DenmarkHQ checked Sep 16, 202651-20099 contacts →

Partial evidence

“Union Engineering, as part of Pentair Group, is a leading partner in CO2 technology, designing and manufacturing CO2 recovery plants for the Beverage industry as well as for…”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceCopenhagen, DenmarkHQ checked Sep 16, 2026201-50087 contacts →

Indirect evidence

“BioCirc is a circular bioeconomic company.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceRoskilde, DenmarkHQ checked Sep 16, 202651-20084 contacts →

Indirect evidence

“Unibio is a leading biotechnology company specialising in advanced gas fermentation technology.”

Source: RevenueBase Database · checked Sep 16, 2026
5Partial evidenceLøgstrup, DenmarkHQ checked Sep 16, 202651-20082 contacts →

Partial evidence

“As one of Denmark's largest and most experienced suppliers in developing, building, and operating biogas plants, we help our customers convert many thousands of tons of biomass…”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceNykøbing Falster, DenmarkHQ checked Sep 16, 202651-20053 contacts →

Partial evidence

“Recycling, Refuse collection, Energy, Incineration, Waste REFA is an expert in waste management and energy production.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceOdense Sø, DenmarkHQ checked Sep 16, 202611-5042 contacts →

Partial evidence

Biogasclean is a leading global supplier of biological systems for desulphurisation and methanation of biogas and CO2.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceFredericia, DenmarkHQ checked Sep 16, 202611-5038 contacts →

Indirect evidence

“We want to be an industrial leader and technological innovator of reliable decarbonization plants supporting the restoration of climate.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceSøborg, DenmarkHQ checked Sep 16, 202611-5033 contacts →

Indirect evidence

“Ammongas A/S is a performing and consulting engineering company.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceSkanderborg, DenmarkHQ checked Sep 16, 202611-5028 contacts →

Partial evidence

“NISSEN energy is a manufacturer and supplier of green energy solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceKnebel, DenmarkHQ checked Sep 16, 20261-109 contacts →

Partial evidence

Biogenic is a suppler of equipment and complete process solutions to the biogas market.”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceHellerup, DenmarkHQ checked Sep 16, 20261-109 contacts →

Partial evidence

“At Green2x, we will produce advanced biofuels from straw at a highly competitive cost, offering a scalable way to secure Europe’s energy supply while accelerating the green…”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceStøvring, DenmarkHQ checked Sep 16, 202651-2008 contacts →

Partial evidence

“Xergi designs and builds biogas plants.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceCopenhagen, DenmarkHQ checked Sep 16, 20261-106 contacts →

Indirect evidence

“Denmark-based green gas developer turning agriwaste into biomethane & bioLNG for cost-effective decarbonization of the Indian gas grid and the shipping industry.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceSkejby, DenmarkHQ checked Sep 16, 20261-105 contacts →

Partial evidence

“Grainit BiomassManager is a cloud based tracking and documentation tool for biogas plants.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 15 of 55 biogas energy recovery companies based in Denmark

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Biogas energy recovery companies based in Denmark at a glance

As of Sep 16, 2026
7.2%Verified-email coverage
21.4Average contacts per company
11-50Median size (employees)
9.1%Largest-city concentration · Copenhagen
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
17
51-200
7
201-500
2
501-1,000
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Denmark, so it is reported there. Company counts and contact totals on this page are exact for Denmark, over 55 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among biogas energy recovery companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Denmark whose own description of what they do matches “biogas energy recovery companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names biogas energy recovery companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among biogas energy recovery companies, and records with no verified work email. Companies headquartered outside Denmark are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 85 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names biogas energy recovery companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many biogas energy recovery companies are there based in Denmark?

RevenueBase identified 55 biogas energy recovery companies headquartered in Denmark as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Nature Energy, headquartered in Odense, tops this list with the largest team on record.

Which city has the most biogas energy recovery companies?

Copenhagen leads with 5 headquartered companies, followed by Skanderborg (3) and Fredericia (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 85 verified decision-maker contacts tracked across these 55 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.