TEWA Solar

What TEWA Solar does

TEWA Solar is a French engineering and commissioning firm headquartered in Reichstett (registered in Strasbourg), founded in 2022, that delivers independent technical services across the full lifecycle of utility-scale photovoltaic (PV) plants and battery energy storage system (BESS) projects. The company operates five integrated business units — Owner Engineering, HV Engineering, PV Engineering, Commissioning, and SCADA & Automation — covering activities from feasibility and technical due diligence through grid-connection design (63/225/400 kV), on-site commissioning, and asset-management support. Its technology stack centers on COPA-DATA's Zenon SCADA platform and Straton PLC programming (under a Bronze Partnership), IEC 61850 substation protocols, PVsyst yield modelling, and LisePV cable sizing — all of which TEWA Solar integrates into client projects rather than develops itself.

The company is a privately held SAS (Société par Actions Simplifiée) with €30,000 in share capital, founder-controlled, with no disclosed external funding rounds. It maintains a 9-person senior team whose collective CVs include GE Grid, Areva T&D, Alstom, Engie, Bouygues/EQUANS, TotalEnergies, and 5B Solar; several members have supervised commissioning on 1 GWp+ of PV worldwide. TEWA Solar monetises through project-based professional-service contracts (no published tier pricing), sold via direct enterprise relationships to project owners, developers, investors, and EPC specialists. Notable customers include TagEnergy (Cernay-lès-Reims 240 MW/480 MWh BESS — France's largest operational battery farm), Unity Power (Banie 2, 406 MWp in Poland), Voltalia (Karavasta 140 MWp in Albania), ZE Energy, BeGreen, Engie Green, Akuo, and Agregio Solutions, with active or completed projects across 11 countries in Europe, Southeast Europe, Central Africa, the Caribbean, and Oceania, and cumulative contracted capacity of 1.3 GWp PV and 3.5 GWh BESS.

The firm's commercial strategy pairs a long-term consortium agreement with NR Flex (a battery-storage business-case specialist) with selective multi-firm consortia, notably the TEWA/NR Flex/B_ENGINEERING/HTB GC group that delivered France's flagship BESS project. Operational posture is reinforced by accreditation: COPA-DATA Bronze Partner status, 1% for the Planet membership, The Shift Project's 'Shift Your Job' recognition, and audited mission-driven company status (Société à Mission) with social and environmental objectives embedded in its articles of association.

Name

TEWA Solar

Legal name

TEWA SOLAR

Website

https://tewa.solar

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

1–10 employees

Short description

TEWA Solar is a French engineering and commissioning firm delivering owner engineering, HV design, PV engineering, commissioning, and SCADA services for utility-scale solar and battery storage projects across Europe, Africa, Oceania, and the Caribbean.

Ownership category

akta.pro rank

Product category

Renewable Energy Engineering Services

NAICS

Solar Electric Power Generation (221114)

akta.pro primary industry

Solar PV Power Plant EPC (Utility-Scale) (EUAEAAAG)

akta.pro secondary industries

PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC), Solar Design, Engineering & Performance Software (PV Modeling, Digital Twins, Monitoring) (EUAMABAH)

Keywords

• Photovoltaic engineering services
• Battery storage commissioning
• High voltage grid connection
• SCADA automation systems
• Renewable energy consulting

Headquarters

HQ city

Roubaix

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Services: Professional engineering services including owner engineering, HV engineering, PV engineering, and automation/SCADA development. Services are project-based and typically span from concept to operation across the project lifecycle.
2. Commissioning Services: Comprehensive commissioning services for energy and renewable energy projects, including testing, energisation, and troubleshooting. Revenue generated through project-based contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

TEWA Solar provides independent engineering and commissioning services for utility-scale photovoltaic plants, battery energy storage systems (BESS), and high-voltage substations. The firm delivers five integrated service units — Owner Engineering, HV Engineering, PV Engineering, Commissioning, and SCADA & Automation — covering the full project lifecycle from development through asset management. It serves project owners, developers, EPC specialists, and investors across Europe, Africa, Oceania, and the Caribbean.

Product overview

TEWA Solar operates as an engineering and commissioning firm specializing in photovoltaic (PV) and battery energy storage system (BESS) projects. The company offers five integrated service units: Owner Engineering (independent technical advisory and project oversight), HV Engineering (high voltage and substation solutions), PV Engineering (photovoltaic design and optimization), Commissioning (testing and validation of renewable installations), and SCADA & Automation (supervisory control systems using COPA-DATA Zenon and Straton platforms). The portfolio also includes Wiki-Solar, a knowledge-sharing initiative. TEWA Solar has delivered 1.3 GWp of PV capacity and 3.5 GWh of BESS projects under contract.

Differentiator

Problem solved

Functional benefit

Products and services

• Owner Engineering Independent engineering services for owners of energy and renewable projects, providing technical advisory, procurement support, grid connection assistance, technical due diligence, tender documentation, bid evaluation, and engineering management throughout the project lifecycle. For project owners, developers, and investors of utility-scale PV and BESS installations.
• HV Engineering
• PV Engineering
• Commissioning
• SCADA & Automation

Named customers10 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature5 records

Partnerships

Five partnerships are on record, tiered core, minor and flagship.

• NR FlexcoreStrategic or Co-development Partner · 28 November 2024Long-term strategic partnership covering the entire photovoltaic and storage energy chain. NR Flex specializes in large-scale battery storage: market and revenue modelling, business-case structuring, development and owner's engineering. TEWA Solar brings engineering execution - HV substations, grid connection, PV and storage design, commissioning and SCADA. Together they cover the whole solar and storage value chain from business case to fully energised, revenue-generating plant. The consortium has worked on 1.3 GWp of PV projects and 3.5 GWh of BESS projects.
• DSI (Dynamique Solaire Ingénierie)minorImplementation/ SI/ Consulting PartnerDSI is described as TEWA Solar's 'little brother' in terms of expertise, bringing field-proven know-how on photovoltaic installations. Victor SALVY worked with TEWA Solar founder Hervé KLEISS on the Karavasta and 20 MW BESS projects. Both companies share the same DNA: technical and operational excellence.
• Copa DatacoreTechnology or IntegrationCopa Data Bronze Partner, enabling TEWA Solar to provide customers with turnkey SCADA systems using the Zenon platform. The partnership provides access to industry-leading automation technology for renewable energy projects, including scalable architecture, advanced analytics, and future-proof technology.
• B_ENGINEERINGflagshipStrategic or Co-development PartnerPartnered with B_ENGINEERING Ingénieurs-conseils and HTB GC on the Cernay-lès-Reims 240 MW/480 MWh BESS project - France's largest operational battery farm. TEWA Solar, NR FLEX, B_ENGINEERING and HTB GC provided expertise to TagEnergy as Assistant Project Manager.
• HTB GCflagshipStrategic or Co-development PartnerPartnered with HTB GC alongside TEWA Solar, NR FLEX, and B_ENGINEERING on the Cernay-lès-Reims BESS project - France's largest operational battery farm.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Others

• Saft (TotalEnergies): Saft is a TotalEnergies subsidiary manufacturing and integrating BESS systems for utility-scale and industrial applications. While not a direct service competitor, it is an ecosystem participant whose BESS platforms TEWA Solar commissions and integrates on its owner engineering and SCADA projects.

Direct peers

• DNV: DNV is one of the leading owner's engineers and technical advisors for solar PV and BESS globally, offering due diligence, yield assessments, and energy advisory. It overlaps directly with TEWA Solar's Owner Engineering, PV Engineering, and HV/grid connection services.
• Artelia: Artelia is a French-headquartered engineering consultancy with a dedicated renewables practice covering PV plant design, HV substation engineering, and owner's engineering. It is one of the most direct domestic peers to TEWA Solar in the French market.
• AFRY: AFRY (formerly Pöyry) is a European engineering consultancy providing owner's engineering, grid connection studies, and technical advisory for solar PV and BESS projects. Its service portfolio and European footprint closely mirror TEWA Solar's offering.
• Bureau Veritas: Bureau Veritas provides independent owner's engineering, technical due diligence and grid code compliance services for utility-scale solar and storage projects across Europe. It competes directly with TEWA Solar on technical advisory and commissioning for large renewable assets, particularly in France.
• Wood: Wood (formerly Amec Foster Wheeler) is a global engineering consultancy with a significant renewable energy practice spanning owner's engineering, HV substation design, and commissioning support for solar and storage projects. It is comparable to TEWA Solar across the full project lifecycle.
• Mott MacDonald: Mott MacDonald is a global engineering consultancy providing owner's engineering, grid connection advisory, and technical due diligence for utility-scale solar and storage projects. Its services and client base (developers, investors, EPCs) overlap meaningfully with TEWA Solar's target segments.
• TÜV Rheinland: TÜV Rheinland provides testing, inspection, certification, and grid code compliance services for renewable energy projects, including PV plant commissioning and BESS testing. It directly competes with TEWA Solar's commissioning and grid code testing capabilities, especially in European markets.

Broad incumbents

• ENGIE Solutions: ENGIE Solutions is a large incumbent providing renewable energy EPC, HV substation construction, and asset management services across France and Europe. It overlaps with TEWA Solar across multiple service lines and is also a customer (Engie Green) on PV revamping work.
• Omexom (VINCI Energies): Omexom is the VINCI Energies brand dedicated to energy infrastructure, including HV substations, PV plant EPC, and BESS integration. As a large incumbent with utility-scale EPC capability, it competes with TEWA Solar on HV engineering, grid connection, and commissioning mandates but at significantly greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/tewa-solar

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 TEWA Solar