AC Boilers
AC Boilers is an Italian industrial boiler manufacturer (founded 1853, now part of Sofinter Group under Mutares) that designs and supplies ultra-supercritical utility boilers, Heat Recovery Steam Generators, and waste-to-energy boilers to global electricity utilities, state-owned power generators, and EPC contractors.
- Company typePrivate
- Founded1853
- HeadquartersGallarate, Italy
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What AC Boilers does
AC Boilers (AC BOILERS S.p.A.) is an Italian industrial boiler manufacturer headquartered in Gallarate, Italy, with its primary manufacturing facility in Gioia del Colle. Founded in 1853 as Ansaldo, the company was acquired by Sofinter Group in 2001 and now operates as one of four brands within the group, alongside Macchi (HRSGs), Europower, and Itea (oxy-combustion). In April 2024, German-listed Mutares SE & Co. KGaA completed the acquisition of a majority stake in Sofinter Group, making AC Boilers an indirect portfolio company.
The company's core product portfolio comprises three lines: utility boilers for coal, oil, and gas firing including ultra-supercritical and supercritical designs up to 660+ MW using Once-Through Benson technology; Heat Recovery Steam Generators (HRSG) for combined cycle power plants in horizontal natural circulation, Once-Through Benson, and vertical assisted circulation configurations; and biomass and waste-to-energy boilers. AC Boilers also provides after-sales services including boiler rehabilitation, low-NOx burner upgrades (TEA and TEA-C families with 13,000+ MWe of air staging and 8,700+ MWe of flue gas recirculation installed), and long-term service agreements. R&D is conducted through wholly-owned subsidiary CCA - Centro Combustione Ambiente, which operates a 50 MWth test boiler and CFD modeling capabilities. The group has supplied over 1,000 units totaling approximately 80 GW across 50+ countries.
AC Boilers serves large electricity utilities, state-owned power generation companies, EPC contractors, and independent power producers via direct enterprise field sales with long sales cycles and project-based, quote-driven pricing. Key customers include Edison, Enel, Ansaldo Energia, MHPS Europe, Compagnie Thermique du Gol, and the Egyptian Electricity Holding Company (over 9,000 MW across multiple projects). The company operates regional subsidiaries in India (AnsaldoCaldaie Boilers India, 26% owned) and Egypt (AC Boilers Egypt, 98% owned) for localized manufacturing and site execution. Group revenue exceeded EUR 200 million in 2023 with approximately 680 employees.
AC Boilers firmographics
Firmographics- Name
- AC Boilers
- Legal name
- AC BOILERS S.p.A.
- Website
- https://acboilers.com
- Company type
- Private
- Founded year
- 1853
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- AC Boilers is an Italian industrial boiler manufacturer (founded 1853, now part of Sofinter Group under Mutares) that designs and supplies ultra-supercritical utility boilers, Heat Recovery Steam Generators, and waste-to-energy boilers to global electricity utilities, state-owned power generators, and EPC contractors.
- Ownership category
- akta.pro rank
AC Boilers industry classification
Industry- Product category
- Industrial Boiler Manufacturing
- NAICS
- Power Boiler and Heat Exchanger Manufacturing (33241), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)
- SIC
- Heating Equipment, Except Electric & Warm Air Furnaces (3433), Fabricated Plate Work (Boiler Shops) (3443)
- akta.pro primary industry
- Industrial Boilers, HRSGs & Steam Generators (IMAHAFAF)
- akta.pro secondary industries
- Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), Industrial Biomass Boilers & Steam Systems (Process Heat) (EUAAAGAC), Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)
Keywords
Where AC Boilers is headquartered
LocationHeadquarters
- HQ city
- Gallarate
- HQ country
- Italy
- HQ region
- Europe
Offices6 records
Markets served
AC Boilers business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Boiler and HRSG Equipment Manufacturing: Design, manufacturing, and supply of large utility boilers, Heat Recovery Steam Generators, and biomass/waste-to-energy boilers. Equipment sales include supercritical boilers up to 660+ MW, HRSGs for combined cycle plants, and specialized boilers for various fuel types.
- After-sales Services and Rehabilitation: Full refurbishment of steam generators, burner rehabilitation, emission reduction upgrades, combustion tuning, life assessment, emergency repairs, long-term service agreements, and spare parts management. After-market business targeted for significant future development.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing for utility boilers, HRSGs, and service contracts |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels7 records
AC Boilers product offering
Product offeringCore offering
AC Boilers designs, manufactures, and installs large-scale industrial utility boilers (ultra-supercritical, supercritical, and subcritical designs for coal, oil, and gas firing), Heat Recovery Steam Generators (HRSG) for combined cycle power plants, and biomass/waste-to-energy boilers. The company also provides aftermarket services including boiler rehabilitation, emission reduction retrofits, combustion tuning, spare parts management, and long-term service agreements for power generation customers worldwide.
Product overview
AC Boilers is an industrial boiler manufacturer offering a portfolio of three core product lines: Utility Boilers (coal, oil, and gas fired, including ultra-supercritical and supercritical designs), Heat Recovery Steam Generators (HRSG) for combined cycle power plants, and Biomass/Waste-to-Energy Boilers. The company also provides comprehensive aftermarket services including boiler rehabilitation, emission reduction technologies, and long-term service agreements. R&D activities are conducted through subsidiary CCA (Centro Combustione Ambiente) with a 50 MWth test boiler facility.
Differentiator
Problem solved
Functional benefit
Products and services
- Utility Boilers (Caldaie di potenza)
Quantifiable outcome
- Over 1,000 units supplied, accounting for approximately 80 GW installed worldwide
- +5 more outcomes
Companies that use AC Boilers
Customer profileNamed customers10 records
Segments4 records
Ideal customer profiles3 records
AC Boilers technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
AC Boilers partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered minor and core.
- NEM Energy GroupminorNEM Energy Group is another Mutares portfolio company in the Engineering & Technology segment. Significant synergies are expected through the combined expertise and market positioning in the HRSG segment.
- Politecnico di BaricoreSofinter Group through its Centro Combustione Ambiente S.r.l. established the ETF (Energy Transition to the Future) laboratory in collaboration with Politecnico di Bari. The partnership supports research on energy transition technologies and combustion systems including fluidized bed reactors.
- AnsaldoCaldaie Boilers India Pvt. Ltd.coreSubsidiary 26% owned by AC BOILERS, headquartered in Chennai with manufacturing facilities in Trichy, Tamil Nadu. Operates directly on India's power market providing engineering, procurement and manufacturing for AC BOILERS projects.
- AC Boilers Egypt S.A.E.coreSubsidiary 98% owned by AC BOILERS, headquartered in Cairo. Dedicated to management of on-shore site activities in Egypt including erection, commissioning, supervision, and regional procurement for AC BOILERS projects.
- Centro Combustione Ambiente S.r.l. (CCA)coreWholly-owned subsidiary of AC BOILERS conducting combustion research and development. Located in Gioia del Colle on 10,000 sq.m area equipped with experimental plants and laboratories for burner inspections and tests, including a 50 MWth test boiler for full scale burner testing.
Scale indicators7 records
Recent moves7 records
Expansion highlights7 records
AC Boilers competitors and assessment
Company assessmentMarket position
Competitive moat5 records
Key risks1 record
Key highlights7 records
Customer concentration
AC Boilers social profiles
Digital presenceAC Boilers compliance and trust
Trust signalCompliance8 records
AC Boilers financial estimates
Financial estimateRevenue estimate
Valuation estimate
AC Boilers leadership team
Management profileNumber of profiles
Profiles8 records
AC Boilers subsidiaries and ownership
Company hierarchySubsidiaries3 records
AC Boilers funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
AC Boilers 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 AC Boilers
What does AC Boilers do?
AC Boilers designs, manufactures, and installs large-scale industrial utility boilers (ultra-supercritical, supercritical, and subcritical designs for coal, oil, and gas firing), Heat Recovery Steam Generators (HRSG) for combined cycle power plants, and biomass/waste-to-energy boilers. The company also provides aftermarket services including boiler rehabilitation, emission reduction retrofits, combustion tuning, spare parts management, and long-term service agreements for power generation customers worldwide.
Is AC Boilers a public or private company?
AC Boilers is a private company. It is classified as private equity controlled and is currently operating.
When was AC Boilers founded?
AC Boilers was founded in 1853. It employs 501 to 1,000 people.
Where is AC Boilers based?
AC Boilers is headquartered in Gallarate, Italy, in the Europe region.
How does AC Boilers make money?
Two revenue lines are on record. Boiler and HRSG Equipment Manufacturing is the primary driver. The others are after-sales Services and Rehabilitation.
Does AC Boilers have an API?
No public API is recorded for AC Boilers.
What industry is AC Boilers in?
AC Boilers's product category is Industrial Boiler Manufacturing. Its primary akta.pro industry code is IMAHAFAF, Industrial Boilers, HRSGs & Steam Generators, with a secondary code of IMAHAEAC, Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers). Its NAICS code is 33241 and its SIC code is 3433.