Circular Energy Sweden

What Circular Energy Sweden does

Circular Energy Sweden AB (CESAB) is a privately held Swedish biogas system integrator founded in 2021 and headquartered in Karlshamn, Blekinge. The company designs, sells, and installs turnkey biogas plants — ranging from small farm-scale combined heat and power (CHP) installations in the 50–530 kW range to multi-digester industrial plants — for agricultural operators, industrial organic-waste producers, and municipal wastewater treatment facilities across southern Sweden. CESAB is not an OEM itself; rather, it serves as the exclusive Swedish channel partner for German agriKomp (farm-scale plants, CHP units, Paddelgigant mixers, Formprotect modular digesters) and Dutch HoSt and its Bright Biomethane subsidiary (Microferm plants, PurePac membrane upgrading systems), bundling hardware from these European suppliers with on-site integration, permitting, and subsidy-application support.

The technology stack spans the full biogas value chain: pre-engineered plant concepts (agriSelect, Microferm), concrete and steel digesters built with Formprotect's modular formwork, mixing and peripheral equipment, gas upgrading to vehicle-grade biomethane (CNG/LBG) via PurePac membrane systems with sub-0.5% methane loss, and CHP units using Scania motors. Layered on top of the hardware offering is PerFlex, a software service developed with Swedish Energy Agency funding and integrated with Crossbreed's Energy OS that optimizes CHP electricity output against real-time Nordic spot prices while preserving digester biological stability.

CESAB's go-to-market is a consultative, full-service direct sales motion: a four-person internal team handles site-specific consultation, system design, permitting, Klimatklivet/Kraftlyftet subsidy applications, construction oversight, and commissioning for each customer. Revenue is generated primarily through one-time turnkey plant sales and hardware sales of components, CHP units, and upgrading systems, with PerFlex introducing a recurring software subscription layer. Pricing is project-specific and not publicly disclosed. The customer base spans named SMB farms (Torsjö Säteri, Äspetorp Mjölk, Mycklinge Lantbruk), a farm cooperative (Vårgårda-Herrljunga Biogas AB), and a public-procurement municipal contract (Mjölkulla Reningsverk). The company has no disclosed funding rounds, no parent company, and four named staff: Stan Weyns (CEO), Victor Olsson (Sales), Joakim Granberg (Technical/PerFlex lead), and John Ohlson (Administration).

Name

Circular Energy Sweden

Legal name

Circular Energy Sweden AB

Website

https://cesweden.se

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1–10 employees

Short description

Circular Energy Sweden AB is a Karlshamn-based integrator that designs, sells, and installs turnkey biogas plants and peripheral equipment for farms, industrial facilities, and municipal wastewater treatment plants across southern Sweden, acting as the Swedish channel partner for agriKomp, HoSt, and Bright Biomethane.

Ownership category

akta.pro rank

Product category

Biogas Systems Integration

NAICS

Electric Power Generation (22111)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Biofuel Plant EPC, O&M & Process Technology Providers (EUAAAHAK)

akta.pro secondary industry

SCADA, Controls & Communications Integration (RTU, Fiber, Networking) (EUAEADAD)

Keywords

• Biogas plant systems
• Combined heat power
• Biomethane upgrading
• Agricultural renewable energy
• Anaerobic digestion equipment

Headquarters

HQ city

Karlshamn

HQ country

Sweden

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Turnkey Biogas Plant Sales and Installation: Design, sell, and install complete biogas plants for agricultural and industrial customers. Revenue generated from equipment sales, engineering, project management, construction oversight, and commissioning. Customers are guided through permits, investment support applications, and authorities.
2. Components, Peripherals, and Spare Parts: Sale of individual components and peripheral equipment (mixers, pumps, digesters, separators, carbon filters, flares, membrane roofs, enzymes, trace elements) for new installations, upgrades, and maintenance of existing plants. Both through agriKomp and HoSt supply chains.
3. CHP (Combined Heat and Power) Systems: Sale and installation of combined heat and power units for converting biogas to electricity and heat. agriKomp CHP units in the 50-500 kW range delivered as pre-configured, sound-insulated concrete container units with Scania motors.
4. Biogas Upgrading Systems: Membrane upgrading systems for purifying raw biogas to biomethane/vehicle gas (CNG/LBG). Revenue from PurePac system sales across four size tiers (Mini, Compact, Medium, Grand).
5. PerFlex Smart Grid Optimization Service: Digital service for optimizing electricity production from biogas CHP units against spot prices. Software-enabled revenue optimization for biogas plant operators. Being developed with Energy Agency support.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Circular Energy Sweden AB (CESAB) sells, designs, and installs turnkey biogas plants and peripheral equipment for agricultural and industrial customers in southern Sweden. The company integrates and resells European-manufactured technology (from German agriKomp and Dutch HoSt/Bright Biomethane) and provides end-to-end project services including permits, investment subsidy applications, construction, and commissioning. Its offerings span complete biogas plants, combined heat and power (CHP) units, membrane-based upgrading systems to vehicle-grade biomethane, peripheral components, and the PerFlex digital optimization service.

Product overview

Circular Energy Sweden (CESAB) operates as a biogas system integrator offering a portfolio of products across the biogas value chain. The core offerings are complete biogas plants from two European suppliers: German agriKomp (specializing in farm-scale CHP plants with the agriSelect product) and Dutch HoSt (specializing in co-digestion and vehicle fuel systems with Microferm®). Supporting these are modules including PurePac® membrane upgrading systems for biomethane production, peripheral equipment (mixers, pumps, separators), and the PerFlex smart control service for optimizing CHP operations against spot prices. The company also offers Formprotect® concrete digester construction. Products range from standardized turnkey farm installations to multi-digester industrial-scale facilities, with options for electricity/heat production or vehicle fuel (CNG/LBG) output.

Differentiator

Problem solved

Functional benefit

Brands

• PerFlex: Smart and flexible control service for combined heat and power (CHP) plants, developed with support from Energimyndigheten to optimize electricity production based on spot prices.

Products and services

• Biogas Plants (Biogasanläggningar) Complete biogas plants from leading European suppliers (German agriKomp and Dutch HoSt), ranging from turnkey farm-scale installations to multi-digester co-digestion plants for food industry, agriculture, and sewage treatment applications. For farm operators, industrial facilities, and municipalities with organic waste streams in southern Sweden.
• Biogas Upgrading Systems (Uppgradering - PurePac) Turnkey membrane-based upgrading equipment (PurePac) that purifies raw biogas to vehicle-grade biomethane (CNG/LBG). Offered in four scalable sizes (Mini 30-60 Nm3/hr, Compact 60-750 Nm3/hr, Medium 750-1,300 Nm3/hr, Grand 1,300-2,500 Nm3/hr) with less than 0.5% methane loss. For biogas plant operators targeting renewable vehicle fuel production.
• Combined Heat and Power Units (Kraftvärme) Combined heat and power (CHP) units in the 50-500 kW range for converting biogas into electricity and heat, delivered as pre-configured, sound-insulated concrete container units with Scania motors. For agricultural and industrial biogas plant operators seeking on-site electricity and heat generation.
• Peripheral Equipment (Kringutrustning) Auxiliary equipment and components for new or existing biogas plants, including mixers (paddle, propeller, top-mounted), pumps (eccentric screw, cutting, lobe, piston), input systems, separators, gas filtration/carbon filters, flares, membrane roofs, and consumables such as enzymes and trace elements. For biogas plant operators, builders, and maintenance teams.
• PerFlex Smart Control Service

Quantifiable outcome

• Biogas from manure can reduce greenhouse gas emissions by over 120% compared to fossil fuels (climate positive)
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability2 records

Feature4 records

Partnerships

Six partnerships are on record, tiered supporting and core.

• Formprotect GmbH (MB+Betonbau)supportingTechnology or Integration · 1 May 2014Formprotect was founded in May 2014 by the owners of agriKomp and M+B Betonbau. Provides a modular formwork system using lost-form plastic modules combined with steel and concrete for constructing highly pressure-resistant digesters. diameters from 6 to 40 meters, wall heights up to 10 meters. Used by Circular Energy Sweden for constructing digesters for Swedish customers.
• CrossbreedsupportingStrategic or Co-development Partner · 1 January 2011Swedish energy software company providing cloud-based energy optimization services. Co-owned by founders, Data Ductus AB, and INTIC Capital Partners. Located in Malmö, Sweden. Associated with the PerFlex project for smart, flexible control of CHP plants — a Circular Energy Sweden innovation funded by the Swedish Energy Agency.
• agriKompcoreTechnology or IntegrationGerman biogas systems manufacturer and one of two selected European suppliers for Circular Energy Sweden. agriKomp develops its own biogas systems, digesters, and components, having constructed over 1,000 biogas plants. Specializes in robust, standardized farm-scale biogas plants. Provides CHP units, digester technology, and peripheral equipment. Key products: agriSelect (farm-scale CHP biogas plant), Paddelgigant mixer, Formprotect modular digester system. Circular Energy Sweden serves as the exclusive Swedish partner for agriKomp technology.
• HoSt (Bioenergy Systems)coreTechnology or IntegrationDutch specialist in energy systems for organic waste streams. Develops and delivers biogas plants for agriculture, industry, and wastewater treatment. Key product: Microferm — turnkey farm-scale plants producing vehicle gas (CBG). Also offers larger co-digestion plants for multiple substrates. HoSt is a key supplier for Circular Energy Sweden alongside agriKomp, providing additional breadth of technology solutions for Swedish customers.
• Bright BiomethanecoreTechnology or IntegrationDutch subsidiary of HoSt specializing in membrane-based biogas upgrading to biomethane (vehicle fuel). Supplies PurePac upgrading systems in four sizes (Mini, Compact, Medium, Grand) for converting raw biogas to CNG/LBG. Circular Energy Sweden offers Bright systems as part of complete biogas-to-vehicle-fuel solutions for Swedish customers.
• Swedish Energy Agency (Energimyndigheten)supportingOthersGovernment agency with the mission to ensure ecologically sustainable, competitive, and secure energy systems. Has provided project funding for the PerFlex initiative (smart, flexible CHP control system) developed by Circular Energy Sweden. Circular Energy Sweden reports on this project on its website.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Krieg & Fischer Ingenieure GmbH: German engineering firm focused on planning and consulting for biogas plants, especially agricultural substrates. Comparable to CESAB's project-lead and engineering coordination role within its turnkey deliveries.
• EnviTec Biogas AG: Public German EPC for turnkey biogas plants (planning, construction, servicing) with hundreds of plants built globally. Closely comparable to CESAB on end-to-end project delivery, though at materially larger scale.
• PlanET Biogas Service GmbH: German-based full-service biogas plant provider covering planning, construction, biological servicing and after-sales. Directly comparable to CESAB's lifecycle-service offering for agricultural biogas plant owners.
• agriKomp GmbH: German biogas systems manufacturer (1,000+ plants constructed) and CESAB's primary technology partner. Comparable because it offers the same standardized farm-scale CHP, digester and mixer portfolio that CESAB integrates for Swedish customers.
• HoSt Group: Dutch bioenergy systems EPC for organic-waste biogas plants, including farm-scale Microferm and larger co-digestion facilities — directly comparable to the second half of CESAB's product portfolio and CESAB's other principal supplier.
• BioConstruct GmbH: German biogas plant EPC specializing in agricultural, industrial and organic-waste substrates including vehicle-fuel production. Highly comparable turnkey integrator model serving similar end customers as CESAB.
• Weltec Biopower GmbH: German-based manufacturer and EPC for container-based and large-scale biogas plants across agricultural and industrial substrates. A close comparable to CESAB's full-plant integration model with similar customer segments.

Broad incumbents

• Hitachi Zosen Inova (HZI): Large Switzerland-headquartered EPC with broad renewable-energy capabilities including anaerobic digestion and biogas upgrading. Overlaps with CESAB in plant engineering and biogas technology, but at much larger scale and across many geographies.
• Gasum Oy: Nordic energy company operating large-scale biogas production, distribution and refueling infrastructure across Finland and Sweden. Overlaps with CESAB's customer base (Swedish biogas projects) and biomethane end-market, but operates as an integrated producer/utility rather than as a supplier/EPC.

Regional players

• Scandinavian Biogas Fuels AB: Swedish-registered biomethane producer focused on upgrading biogas to vehicle fuel and fertilizer. Operates in the same Swedish circular-bioenergy value chain as CESAB, though as a plant owner/operator rather than as an EPC, and serves overlapping agricultural and industrial feedstock sources.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/circular-energy-sweden-ab

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Circular Energy Sweden