Terrasol
Terrasol is a French geotechnical engineering firm (founded 1979, subsidiary of Groupe setec) providing consulting services, proprietary calculation software (Talren, K-Réa, Foxta), Plaxis distribution, and professional training to construction, infrastructure, nuclear, and industrial clients across 25+ countries.
- Company typePrivate
- Founded1979
- HeadquartersParis, France
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Terrasol does
Terrasol is a French geotechnical engineering firm founded in 1979 and operating as a specialized subsidiary of the Groupe setec engineering conglomerate. The company provides a vertically integrated offering across three lines: (i) engineering services covering preliminary studies, owner assistance, soil investigation monitoring, design and works supervision, tender assistance, execution studies, external controls, and damage diagnostics; (ii) proprietary calculation software including Talren (slope stability and earthworks), K-Réa (foundations and earth pressure), and Foxta (tunneling and underground structures), complemented by exclusive distribution of Plaxis in France and francophone countries; and (iii) professional training delivered via a public catalog and custom intra-company sessions.
The firm serves project owners (maîtres d'ouvrage), construction companies, industrial operators, and civil engineering design firms, with a customer base spanning French transportation (SNCF, RATP, Groupe ADP), major construction groups (Vinci, Bouygues, Eiffage, Fayat, NGE, Soletanche Bachy, Keller), nuclear and energy operators (EDF, Framatome, Orano, CEA, Andra), and industrial clients (Air Liquide, Renault, Saipem, Technip, Spie). The team comprises approximately 110 staff including 95 geotechnical engineers, several of whom are internationally recognized, and the firm generates ~25% of revenue outside France across more than 25 countries.
Revenue is reported at €15M in 2025, with engineering services representing 85% of activity. Pricing is not publicly disclosed; software is sold on a quote basis with evaluation licenses available, and training is catalog-priced. The company pursues a controlled growth strategy anchored in technical expertise, proprietary software IP, scientific publications, and a recurring training catalog, with international expansion and a 2026 software evolution roadmap identified as forward growth levers.
Terrasol firmographics
Firmographics- Name
- Terrasol
- Legal name
- Terrasol
- Website
- https://terrasol.fr
- Company type
- Private
- Founded year
- 1979
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Terrasol is a French geotechnical engineering firm (founded 1979, subsidiary of Groupe setec) providing consulting services, proprietary calculation software (Talren, K-Réa, Foxta), Plaxis distribution, and professional training to construction, infrastructure, nuclear, and industrial clients across 25+ countries.
- Ownership category
- akta.pro rank
Terrasol industry classification
Industry- Product category
- Geotechnical Engineering Services
- NAICS
- Geophysical Surveying and Mapping Services (541360), Geophysical Surveying and Mapping Services (54136), Surveying and Mapping (except Geophysical) Services (54137)
- SIC
- Services-Testing Laboratories (8734), Services-Commercial Physical & Biological Research (8731)
- akta.pro primary industry
- Geotechnical Design, Engineering & Consulting (Analysis, Design, Peer Review) (IMAFAOAK)
- akta.pro secondary industries
- Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing) (IMAFAOAG), Slope Stabilization & Landslide Mitigation (Soil Nailing, Shotcrete, Reinforced Slopes) (IMAFAOAI), Site Remediation & Contaminated Soil Handling (IMAFAKAG)
Keywords
Where Terrasol is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices1 record
Markets served
Terrasol business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Others
Revenue model
- Engineering Services: Geotechnical engineering consulting including preliminary studies, owner assistance, soil investigation monitoring, design and works supervision, tender assistance, execution studies, external controls, and damage diagnostics. Represents 85% of company activity.
- Software Licensing and Distribution: Development and commercialization of proprietary calculation software (Talren, K-Réa, Foxta) plus distribution of Plaxis software in France and francophone countries. Provides evaluation licenses, technical support, and quotes on request.
- Professional Training: dozens of inter- and intra-company training sessions annually, designed by engineers for engineers, focused on practical performance improvement. Catalog-based offerings with registration through external platform and custom in-company sessions available.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Professional training sessions - catalog-based inter-company and custom intra-company offerings |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels6 records
Terrasol product offering
Product offeringCore offering
Terrasol is a specialized geotechnical engineering consultancy delivering end-to-end soil and structure analysis for infrastructure, transportation, energy, and construction projects, from preliminary studies through execution supervision and damage diagnostics. It complements its engineering services with three proprietary calculation software products — Talren, K-Réa, and Foxta — and exclusive distribution of Plaxis in France and francophone countries, alongside annual inter- and intra-company professional training programs for engineers.
Product overview
Terrasol is a geotechnical engineering firm that operates as a single integrated offering combining engineering services, proprietary calculation software, and professional training. The core product portfolio consists of three proprietary calculation software solutions — Talren, K-Réa, and Foxta — which provide geotechnical modeling, stability analysis, and numerical calculation capabilities. Additionally, Terrasol distributes Plaxis software (a third-party geotechnical finite element analysis tool) in France and French-speaking countries. Beyond software, the company offers comprehensive geotechnical engineering services and professional training programs, positioning itself as a one-stop provider for geotechnical engineering needs since 1979.
Differentiator
Problem solved
Functional benefit
Brands
- Talren: Geotechnical calculation software for slope stability and retaining structures.
- K-Réa
- Foxta
Products and services
- Talren Proprietary geotechnical calculation software developed and commercialized by Terrasol for modeling, calculating, and analyzing the stability of slopes, earthworks, and retaining structures. Serves as a reference solution in the geotechnical industry and is licensed to engineering design firms, construction companies, and project owners.
- K-Réa
- Foxta
- Plaxis distribution
- Terrasol Engineering Services
- Terrasol Professional Training
Companies that use Terrasol
Customer profileNamed customers29 records
Segments4 records
Ideal customer profiles4 records
Terrasol technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Terrasol partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Setec GroupcoreTerrasol is a member of the Setec group (https://www.setec.fr/), a French engineering group. The company operates under the Setec umbrella while maintaining its specialized geotechnical identity. Setec provides the broader organizational framework and brand association.
Scale indicators4 records
Recent moves5 records
Expansion highlights5 records
Terrasol competitors and assessment
Company assessmentDirect peers
- Bureau Veritas: Paris-headquartered testing, inspection and certification (TIC) and engineering services group. Comparable to Terrasol as a French-rooted engineering-services firm serving infrastructure, energy and industrial clients with technical and certification activities.
- Fondasol: French geotechnical and soil-mechanics engineering firm offering studies, site investigations and foundations advice. Direct niche peer to Terrasol with similar services portfolio and French client base in construction and infrastructure.
- Apave: French technical and engineering services group offering testing, inspection, certification and engineering consulting. Directly comparable as a French engineering-services peer with overlapping risk-management and infrastructure client base, although broader in scope than Terrasol's geotechnical specialty.
- Itasca Consulting Group: Specialist geotechnical and rock-mechanics software and consulting firm (FLAC, UDEC, PFC). Comparable to Terrasol as a hybrid geotechnical software-plus-consulting peer competing in the same numerical-modeling and slope/underground analysis space.
Broad incumbents
- Fugro: Dutch global leader in geotechnical, survey and geo-data services. Closest large-scale direct competitor on geotechnical investigation, foundation advisory and offshore/onshore soil characterization, though materially larger and broader in geographic and service scope than Terrasol.
- WSP: Global professional services consultancy with a large geotechnical and environment practice. Competes for major infrastructure tenders and shares overlap with Terrasol in transport and energy sectors, though at substantially larger scale.
- Egis: French-headquartered engineering group active in transport, energy, environment and buildings. Comparable as a French multi-disciplinary engineering competitor that participates in the same tenders and serves overlapping infrastructure clients (SNCF, RATP, ADP, etc.).
- Arcadis: Global design and engineering consultancy with strong geotechnical and environment practices. Competes for the same large infrastructure and energy clients as Terrasol, but operates at far greater scale and across multiple disciplines.
- Stantec: North American-headquartered global engineering, architecture and environmental consultancy with growing geotechnical capabilities. Comparable as a large multi-disciplinary peer competing for the same infrastructure and energy project opportunities.
Emerging players
- Midas IT (Geo-technical Solutions): Provider of GTS NX and other numerical geotechnical analysis software. Comparable to Terrasol's software arm (Talren, K-Réa, Foxta) as a competing developer of geotechnical finite-element calculation tools used by the same design-firm customer base.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Terrasol social profiles
Digital presenceTerrasol financial estimates
Financial estimateRevenue estimate
Valuation estimate
Terrasol leadership team
Management profileNumber of profiles
Profiles1 record
Terrasol funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Terrasol 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 Terrasol
What does Terrasol do?
Terrasol is a specialized geotechnical engineering consultancy delivering end-to-end soil and structure analysis for infrastructure, transportation, energy, and construction projects, from preliminary studies through execution supervision and damage diagnostics. It complements its engineering services with three proprietary calculation software products — Talren, K-Réa, and Foxta — and exclusive distribution of Plaxis in France and francophone countries, alongside annual inter- and intra-company professional training programs for engineers.
Is Terrasol a public or private company?
Terrasol is a private company. It is classified as corporate owned and is currently operating.
When was Terrasol founded?
Terrasol was founded in 1979. It employs 101 to 250 people.
Where is Terrasol based?
Terrasol is headquartered in Paris, France, in the Europe region.
How does Terrasol make money?
Three revenue lines are on record. Engineering Services are the primary driver. The others are software Licensing and Distribution and professional Training.
Who are Terrasol's main competitors?
Direct peers on record are Bureau Veritas, Fondasol, Apave and Itasca Consulting Group. Broad incumbents are Fugro, WSP, Egis, Arcadis and Stantec. Midas IT (Geo-technical Solutions) is listed as an emerging player.
Does Terrasol have an API?
No public API is recorded for Terrasol.
What industry is Terrasol in?
Terrasol's product category is Geotechnical Engineering Services. Its primary akta.pro industry code is IMAFAOAK, Geotechnical Design, Engineering & Consulting (Analysis, Design, Peer Review), with a secondary code of IMAFAOAG, Geotechnical Investigation & Site Characterization (Boreholes, In-situ Testing, Lab Testing). Its NAICS code is 541360 and its SIC code is 8734.