Westenergy
Westenergy Oy is a Finnish waste-to-energy utility that operates the Koivulahti WtE plant, processing non-recyclable municipal waste from its seven regional waste-management owner-shareholders into electricity, district heating, and recovered materials on a cost-recovery basis.
- Company typePrivate
- Founded2008
- HeadquartersKoivulahti, Finland
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Westenergy does
Westenergy Oy is a Finnish private limited company founded in 2008 (registered in the Finnish Trade Register; operations launched with plant commissioning in August 2012) that operates a single waste-to-energy (WtE) combustion plant in Koivulahti, Mustasaari, Finland. The facility processes non-recyclable municipal solid waste delivered by its seven regional waste-management owner-shareholders, converting it through combustion into electricity (50.6 GWh produced in 2025), district heating (419 GWh in 2025, supplying roughly half of the Vaasa region's winter heat demand and the majority in summer), and recovered materials such as bottom slag. The plant achieved 94.7% availability in 2025 and processed 188,952 tonnes of waste, with flue gas scrubbing and other emission control systems in place.
The company operates under a cost-recovery (omakustannusperiaate) business model enshrined in its Articles of Association: services are provided exclusively to its seven owner companies at predetermined cost-recovery prices, the company generates no profit, and pays no dividends. Equity is split across Oy Botniarosk Ab (6.19%), Ab Ekorosk Oy (6.26%), Lakeuden Etappi Oy (24.75%), Loimi-H\u00e4meen J\u00e4tehuolto Oy (17.68%), Millespakka Oy (3.54%), Ab Stormossen Oy (23.30%), and Vestia Oy (18.27%). Revenue in 2025 was EUR 16.7M, down from EUR 18.9M in 2024 due to a 10-year turbine overhaul and market-driven electricity flexibility. The company holds ISO 9001, 14001, 45001 (since 2015), and ISO/IEC 27001 (March 2026) certifications.
Strategically, Westenergy is pursuing carbon-neutral energy production by the early 2030s. The principal initiative is the ECCU (Energy Carbon Capture & Utilisation) project, run through wholly-owned subsidiary Eccu Oy (established March 2024), which will capture and liquefy CO2 from the plant's flue gases for delivery to a power-to-x facility in Kristiinankaupunki for synthetic methane production, with CPC Finland Oy and Prime Capital AG as joint developers. Total ECCU investment is approximately EUR 140M, supported by a EUR 20M Finnish Ministry of Employment and Economy subsidy, with FEED design completed in 2025 alongside Andritz AG and Ramboll Danmark A/S, a Mustasaari construction permit granted in December 2025, and a planned 2028 operational date. A secondary R&D effort, Ekoälyä (Eco AI), is applying sensor fusion and AI to waste sorting and routing, funded by the European Regional Development Fund.
Westenergy firmographics
Firmographics- Name
- Westenergy
- Legal name
- Westenergy Oy
- Website
- https://westenergy.fi
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Westenergy Oy is a Finnish waste-to-energy utility that operates the Koivulahti WtE plant, processing non-recyclable municipal waste from its seven regional waste-management owner-shareholders into electricity, district heating, and recovered materials on a cost-recovery basis.
- Ownership category
- akta.pro rank
Westenergy industry classification
Industry- Product category
- Waste-to-Energy Services
- NAICS
- Waste Collection (5621), Solid Waste Collection (562111), Waste Management and Remediation Services (562)
- SIC
- Refuse Systems (4953), Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- Waste-to-Energy (WtE) Combustion Facilities (BPALACAD)
- akta.pro secondary industries
- Waste-to-Energy CHP (Municipal/Industrial Waste Incineration) (EUACAKAC), Waste-to-Energy CHP & District Heating Integration (Heat offtake systems) (EUAAAKAH), Ash, Slag & Residue Handling and Valorization (Bottom ash, fly ash, metals recovery) (EUAAAKAJ), WtE Plant Development, EPC & O&M Services (Project delivery and operations) (EUAAAKAK)
Keywords
Where Westenergy is headquartered
LocationHeadquarters
- HQ city
- Koivulahti
- HQ country
- Finland
- HQ region
- Europe
Offices2 records
Markets served
Westenergy business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Waste Processing Services: Westenergy processes non-recyclable municipal waste for its seven owner companies. Revenue is based on cost-recovery principle (omakustannusperiaate) — the company covers its costs but does not generate profit margins or pay dividends.
- Electricity Sales: Electricity produced from waste combustion is sold. In 2025, production was lower due to turbine 10-year overhaul and market-driven flexibility, generating 50.6 GWh.
- District Heating Sales: District heat produced from waste combustion is sold. In 2025, production was 419 GWh, covering about half of Vaasa region's district heating needs in winter, and most in summer.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Cost-recovery pricing for owner companies |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Westenergy product offering
Product offeringCore offering
Westenergy runs a waste-to-energy plant in Koivulahti, Mustasaari, Finland, processing non-recyclable municipal waste delivered by its owner-companies and converting it into electricity, district heating, and recovered materials (such as bottom ash). Commissioned in August 2012 and operated on a cost-recovery basis, the plant accepts roughly 165,000 tonnes of waste per year and also acts as a hub for new circular-economy initiatives including the ECCU carbon capture project.
Product overview
Westenergy operates a waste-to-energy (WtE) plant in Mustasaari, Finland, that processes non-recyclable municipal solid waste into three main products: electricity, district heating, and recovered materials. The facility, commissioned in August 2012, has a 94.7% availability rate and produces approximately 419 GWh of district heat and 50.6 GWh of electricity annually. The plant also recovers bottom slag for recycling as part of its circular economy operations. Strategic initiatives include the ECCU (Energy Carbon Capture & Utilisation) project for CO2 capture planned for 2028, and the Ekoälyä R&D project developing AI-based waste sorting solutions. The company is owned by seven Finnish waste management companies and operates on a cost-basis principle.
Differentiator
Problem solved
Functional benefit
Products and services
- Waste-to-Energy CHP Operations (Koivulahti plant) Core service: combustion of non-recyclable municipal waste at the Koivulahti facility (capacity ~165,000 tonnes/year) with energy recovery, sold back to owner-companies on a cost-recovery basis under long-term feedstock agreements.
- Electricity production and offtake supply Electricity generated from waste combustion is delivered under long-term offtake to Vaasan Sähkö and the regional grid for distribution to end customers.
- District heating supply Heat recovered from waste combustion is delivered into the local district-heating network, supplying baseload, locally generated heat to municipal and industrial customers in the Ostrobothnia region.
- Recovered materials (bottom ash and residues) Bottom ash and other combustion residues are separated, recovered and returned to the circular economy (for example in construction materials), reducing the volume of waste that requires final disposal.
- ECCU carbon capture and utilization project A development-stage carbon capture and utilization initiative intended to capture CO2 from the Koivulahti plant's flue gases, supporting decarbonization of district heat and enabling future carbon-negative waste-to-energy operations.
Quantifiable outcome
- Waste processed: 188,952 tonnes in 2025
- +4 more outcomes
Companies that use Westenergy
Customer profileNamed customers8 records
Segments1 record
Ideal customer profiles2 records
Westenergy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Westenergy partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core, major and minor.
- CPC Finland OycoreJoint development of carbon dioxide capture plant with Prime Capital AG. CPC Finland and Prime Capital are developing a power-to-x plant in Kristiinankaupunki that will use captured CO2 for synthetic fuel production.
- Prime Capital AGcoreJoint development of carbon dioxide capture plant. Prime Capital and CPC are building a power-to-x facility in Kristiinankaupunki to convert captured CO2 into synthetic methane.
- Eccu OycoreWholly-owned subsidiary (100%) established March 2024 to build and operate the carbon dioxide capture plant. Westenergy will operate the CO2 recovery process.
- Andritz AGmajorFEED (Front-End Engineering Design) partner for carbon dioxide capture plant design completed in 2025.
- Ramboll Danmark A/SmajorFEED (Front-End Engineering Design) partner for carbon dioxide capture plant design completed in 2025.
- Vaasan Sähkö OycoreProcesses energy produced by Westenergy into electricity and district heating in their owned equipment. Also provides necessary energy production during Westenergy's annual maintenance shutdown. Coordinates district heating storage.
- Lakeuden Etappi OymajorPartnership for bottom slag processing and further refining. Also a major owner (24.75% stake).
- Suomen Erityisjäte OymajorHandles bottom slag processing from Westenergy's operations. Partnership has stabilized slag handling processes making them cost-effective and predictable.
- Rescue Team Finland OymajorSafety cooperation partner for annual maintenance shutdowns. Provides safety surveillance during large-scale maintenance operations involving up to 120 workers.
- MehiläinenmajorProvides occupational health services for Westenergy personnel.
- Valmet AutomationminorContractor participating in annual maintenance shutdowns.
- Kiwa Sertifiointi OymajorIndependent certification body that granted ISO/IEC 27001 information security certificate in March 2026.
Scale indicators10 records
Recent moves8 records
Expansion highlights5 records
Westenergy competitors and assessment
Company assessmentBroad incumbents
- Fortum Waste Solutions Oy: Fortum Waste Solutions is the Nordic incumbent arm of Fortum that handles hazardous and municipal waste, including recovery and treatment operations in Finland and Sweden. Overlaps with Westenergy in Nordic waste-treatment infrastructure but operates a broader, multi-site portfolio.
- EEW Energy from Waste GmbH: EEW is Europe's largest operator of waste-to-energy plants, with roughly 5 million tonnes of annual capacity across multiple facilities in Germany and neighboring countries. It is a broad incumbent in the same WtE/CHP category as Westenergy but at much larger scale and portfolio breadth.
Direct peers
- Tampereen Energia Oy: Tampereen Energia runs combined heat and power operations in the Tampere region and has explored waste-derived fuels. Closely comparable Finnish municipal energy utility with CHP/district-heating focus.
- AEB Amsterdam B.V. AEB Amsterdam is the municipal waste-and-energy company operating a large WtE plant in Amsterdam that supplies heat to the city's district-heating network. A direct municipal/regional WtE-to-district-heating peer at larger scale.
- Lahti Energia Oy: Lahti Energia owns and operates the Kymijärvi II waste-to-energy plant supplying district heating to the Lahti region. Direct comparability on facility technology, scale, and CHP/district-heating value chain.
- Vantaan Energia Oy: Vantaan Energia operates the largest waste-to-energy facility in Finland in Vantaa, producing district heating and electricity from non-recyclable municipal waste. Same domestic Finnish WtE/CHP business model and end-customer mix as Westenergy.
- Helen Oy: Helen (formerly Helsinki Energy) operates the Hanasaari B waste-to-energy plant as part of Helsinki's CHP and district-heating infrastructure. Comparable WtE-to-district-heating integration serving a large Nordic urban area.
- Sysav: Sysav is a Swedish municipal-owned waste and recycling company operating a waste-to-energy plant in Malmö that generates district heating and electricity, with a similar cooperative public-ownership and cost-driven structure. Like Westenergy, Sysav processes residual municipal waste from owner municipalities and sells recovered energy to a district-heating network.
- Renova AB: Renova operates the WtE plant in Gothenburg producing district heating, electricity, and recovered materials for municipal owners in western Sweden. The business model (waste-to-energy with municipal/cooperative shareholders, district-heating offtake) is closely comparable to Westenergy's Vaasa-region operations.
- AVR Rotterdam B.V. AVR operates waste-to-energy plants in the Rotterdam area producing heat and electricity for the Dutch market, with integrated residual processing. Similar in producing WtE-derived energy and recovering materials from incineration residues.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Westenergy social profiles
Digital presenceWestenergy compliance and trust
Trust signalCompliance5 records
Westenergy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Westenergy leadership team
Management profileNumber of profiles
Westenergy subsidiaries and ownership
Company hierarchySubsidiaries1 record
Westenergy funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Westenergy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Westenergy
What does Westenergy do?
Westenergy runs a waste-to-energy plant in Koivulahti, Mustasaari, Finland, processing non-recyclable municipal waste delivered by its owner-companies and converting it into electricity, district heating, and recovered materials (such as bottom ash). Commissioned in August 2012 and operated on a cost-recovery basis, the plant accepts roughly 165,000 tonnes of waste per year and also acts as a hub for new circular-economy initiatives including the ECCU carbon capture project.
Is Westenergy a public or private company?
Westenergy is a private company. It is classified as corporate owned and is currently operating.
When was Westenergy founded?
Westenergy was founded in 2008. It employs 11 to 50 people.
Where is Westenergy based?
Westenergy is headquartered in Koivulahti, Finland, in the Europe region.
How does Westenergy make money?
Three revenue lines are on record. Waste Processing Services are the primary driver. The others are electricity Sales and district Heating Sales.
Who are Westenergy's main competitors?
Broad incumbents on record are Fortum Waste Solutions Oy and EEW Energy from Waste GmbH. Direct peers are Tampereen Energia Oy, AEB Amsterdam B.V., Lahti Energia Oy, Vantaan Energia Oy, Helen Oy, Sysav, Renova AB and AVR Rotterdam B.V..
Does Westenergy have an API?
No public API is recorded for Westenergy.
What industry is Westenergy in?
Westenergy's product category is Waste-to-Energy Services. Its primary akta.pro industry code is BPALACAD, Waste-to-Energy (WtE) Combustion Facilities, with a secondary code of EUACAKAC, Waste-to-Energy CHP (Municipal/Industrial Waste Incineration). Its NAICS code is 5621 and its SIC code is 4953.