What Leroux & Lotz Technologies does

Leroux & Lotz Technologies (LLT) is a Nantes-headquartered industrial engineering firm that designs and supplies combustion and gasification furnace/boiler systems in the 10–120 MWth range, adapted to heterogeneous solid fuels such as biomass, waste wood, SRF and RDF. The company offers a multi-technology platform — step grates (grilles gradins), spreader stokers, and bubbling/circulating fluidized bed — combining in-house R&D (INNOV'ENERGY 2 MW test platform in Nantes) with IP licensed or acquired from third parties, notably Koch-type step grates under exclusive French-market agreement with Mitsubishi Hitachi Power Systems and fluidized bed technology acquired from Swedish firm TPS in 2010.

LLT generates revenue primarily through B2B EPC turnkey projects for energy recovery operators, renewable-energy utilities and industrial plant operators, complemented by retrofit and modernization services, Smart Performance operational-optimization contracts, and the MetisIA AI-driven control solution developed with Purecontrol. Pricing is bespoke and quote-based per project, with multi-year service components tied to KPI-based compensation. Customers are large European utilities and waste-to-energy operators including Veolia, Suez, Engie, Dalkia, Idex, Urbaser, Albioma, INOVA, Coriance and Cristal Union.

Operating from Nantes (HQ), Echirolles/Grenoble (engineering/R&D) and Gliwice, Poland, LLT employs 120+ professionals and reports €65M in annual turnover with 35% of revenue generated internationally. The company is privately held as a Société par Actions Simplifiée; it was acquired by Groupe Altawest in 2005 and integrated into the Boccard France enterprise network in 2024. Holdings include ISO 9001/14001/45001 triple certification and a 2025 Silver EcoVadis medal recognizing top-quartile CSR performance in the sector.

Name

Leroux & Lotz Technologies

Legal name

Leroux & Lotz Technologies

Website

https://lerouxlotz.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

101–250 employees

Short description

Leroux & Lotz Technologies is a French industrial engineering firm that designs and supplies combustion and gasification furnace/boiler systems (10–120 MWth) for European energy-recovery operators, biomass power producers, and industrial customers, complemented by retrofit services, AI-driven plant optimization, and approximately €65M in annual revenue across 200+ installed references.

Ownership category

akta.pro rank

Product category

Industrial Combustion & Gasification Systems

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), Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Industrial Boilers, HRSGs & Steam Generators (IMAHAFAF)

akta.pro secondary industries

Biomass Combustion & Boiler Island Technology (Grates, Fluidized Bed, Burners) (EUAAAGAG), Thermal Power Plant Modernization & Life Extension (Boiler/Turbine/Generator) (EUAEALAA), Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

Keywords

• Combustion systems
• Gasification boilers
• Waste-to-energy
• Biomass power plants
• Thermal power EPC

Headquarters

HQ city

Nantes

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. EPC Projects (New Installations): Design and supply of complete furnace (combustion or gasification) / boiler systems for new thermal power plants, including engineering, procurement, and construction oversight
2. Retrofit and Modernization Services: Upgrading existing Energy Recovery Units (ERUs) and heating plants to improve performance, increase capacity, or adapt to new fuel types. Includes control system modernization with HAZOP/SIL review and automation upgrades.
3. Operational Performance Services (Smart Performance): Performance optimization services including energy efficiency analysis, process optimization, operator training, and multi-year performance contracts with KPI-based compensation.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Leroux & Lotz Technologies designs and supplies complete furnace (combustion or gasification) / boiler systems ranging from 10 to 120 MWth, using multiple technologies including step grates, spreader stokers, and bubbling/circulating fluidized beds adapted to solid fuels such as biomass, waste wood, SRF, and RDF. The company also delivers retrofit/modernization of existing Energy Recovery Units and Smart Performance operational optimization services, and markets the MetisIA AI-based control system developed in partnership with Purecontrol.

Product overview

Leroux & Lotz Technologies is a designer and supplier of combustion and gasification systems for solid fuel power plants, offering furnace/boiler units from 10 to 120 MWth with multiple technology options (step grates, spreaders, fluidized beds). The core product is complemented by Smart Performance services for operational optimization and MetisIA, an AI-powered intelligent control solution developed with Purecontrol. The company also provides retrofit and modernization services for existing installations, as well as comprehensive support activities including training and maintenance.

Differentiator

Problem solved

Functional benefit

Brands

• INNOV'ENERGY: Technology platform located at the Nantes headquarters for testing with wood fuels and non-hazardous waste - 2 MW capacity.
• Smart Performance
• MetisIA

Products and services

• Combustion and Gasification Furnaces/Boilers Design and supply of complete furnace (combustion or gasification) and boiler systems from 10 to 120 MWth, with different technologies (step grates/grilles gradins, spreader stokers, bubbling/circulating fluidized beds) adapted to solid fuels (biomass, wood waste, SRF, RDF) and target energy needs. Targeted at energy utilities, waste-to-energy operators, and industrial facilities.
• Smart Performance Operational optimization service for combustion, steam boiler, and flue gas treatment installations, including performance verification, energy flow modeling, optimized control algorithms, operational training, and multi-year performance contracts with KPI-based compensation.
• MetisIA AI-based intelligent control solution for cogeneration plants, developed in partnership with Purecontrol. Provides predictive real-time control, demand prediction, disruption anticipation, anomaly detection, production stabilization, and efficiency optimization without modifying existing automation systems.
• Retrofit Services Retrofit and modernization of existing Energy Recovery Units (ERUs) and heating plants, including upgrades related to fuel evolution or capacity increase, creation of new incineration lines, control system modernization with HAZOP/SIL review, and automation upgrades.
• Service Activities Support services including optimization of process equipment, training and support for operating teams, control system modernization, and customer service for maintenance planning and spare parts.

Quantifiable outcome

• 95%+ availability achieved at renovated facilities
• +4 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability4 records

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• Boccard FrancecoreStrategic or Co-development Partner · 1 January 2024In 2024, Leroux & Lotz Technologies integrated the Boccard France enterprise network. Boccard is an experienced system integrator with over 100 years of history, providing LLT with expanded system integration capabilities and market reach.
• PurecontrolcoreTechnology or IntegrationPartnership between LLT and Purecontrol to develop MetisIA, an AI-powered intelligent control system for thermal power plants. Combines LLT's manufacturing expertise with Purecontrol's predictive real-time control technology. MetisIA integrates without modifications to existing automation systems.

Scale indicators7 records

Recent moves11 records

Expansion highlights5 records

Broad incumbents

• Babcock & Wilcox: Legacy industrial boiler manufacturer with biomass and waste-to-energy offerings and a global services aftermarket; competes in the same utility-scale thermal-plant space as LLT but at much larger scale.
• Mitsubishi Power: Global power-generation OEM with broad thermal, biomass and waste-to-energy capabilities and a long-standing exclusive grates partnership with LLT for France; potential competitor and partner simultaneously.

Direct peers

• Andritz: Global supplier of biomass-fired boiler islands and pulp-and-power plants with comparable fluidized-bed and grate technology and a similar EPC + service mix. Most direct competitor to LLT's 10-120 MWth biomass/waste boiler offering.
• Valmet: Supplies biomass power boilers, heat and power generation systems and lifecycle services to utilities and industrial operators, overlapping directly with LLT's furnace/boiler EPC and Smart Performance aftermarket.
• Doosan Lentjes: German-based EPC provider of waste-to-energy and biomass boiler plants with grate and fluidized-bed technology, directly competing for the same Veolia/Suez-class waste-to-energy tenders that LLT targets.
• Hitachi Zosen Inova: Waste-to-energy plant specialist and successor to Von Roll/Inova; competes with LLT on Energy Recovery Unit boiler islands and on retrofit programs across European MSW operators.
• Sumitomo Heavy Industries (SHI FW): Owns the Foster Wheeler circulating fluidized-bed biomass and waste boiler business, one of the closest direct technology competitors to LLT's BFB/CFB portfolio inherited from Swedish TPS.
• Martin GmbH: German manufacturer of grate and fluidized-bed combustion systems for biomass, waste and sludge; closely comparable technology footprint to LLT and a frequent bidder on European waste-to-energy retrofits.
• Standardkessel Baumgarte: German EPC for biomass and waste-fired boiler plants with comparable MWth-scale projects and a similar industrial customer base, making it a head-to-head rival in Central and Western European tenders.
• CNIM: French industrial group active in waste-to-energy, biomass power and process heat, with overlapping customer relationships in the French market and comparable grate and fluidized-bed capabilities.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/leroux-et-lotz-technologies-llt-
• Xx.com/lerouxlotzindus

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 Leroux & Lotz Technologies