What Wattmen does

Wattmen is a privately held French company founded in 2018 in Saint Priest en Jarez (operational headquarters in Lyon) that designs, installs, and operates grid-connected electricity storage farms based on Battery Energy Storage Systems (BESS). The company addresses intermittency and grid-balancing constraints of renewable energy by deploying distributed storage assets and optimizing them through DEMS, a proprietary Digital Energy Management System developed in-house for real-time piloting, monitoring, and performance management.

The business operates across three customer segments: electro-intensive industrial sites seeking energy-cost optimization and decarbonation; renewable energy developers and independent power producers (ENR/IPP) needing production shaping, intermittency management, and grid-connection optimization; and local authorities/landowners seeking to valorize underutilized land with no upfront capital investment. Wattmen offers three engagement models — direct CAPEX purchase, as-a-service subscription, and long-term land-lease (bail) — to lower capital barriers across these segments, with multi-year contracts and quote-based pricing tailored to project specifications.

Wattmen's revenue streams are therefore mixed: hardware sales and installation for the CAPEX path, recurring software/subscription revenue from DEMS piloting and supervision services, and professional services revenue from maintenance. The go-to-market is sales-led and direct, primarily relationship-driven through website quote requests and consultative enterprise sales targeting industrial buyers, public-sector entities, and renewable developers. Wattmen financed 100% of capital expenditure for landowners and collectivités, relying on partnerships with BPI France and Banque de la Transition Énergétique for project finance. The company obtained French Tech and ADEME labels in 2024, launched its first operational projects in 2025, and has set a strategic objective of reaching 1.2 GW of installed capacity by 2030.

Name

Wattmen

Legal name

Wattmen

Website

https://wattmen.fr

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Wattmen is a French battery energy storage operator that designs, installs, and runs grid-connected storage farms for industrial sites, renewable developers, and local authorities, optimized through its proprietary DEMS software platform.

Ownership category

akta.pro rank

Product category

Battery Energy Storage Services

NAICS

Electric Power Generation (22111), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric Services (4911), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA)

akta.pro secondary industries

Distributed Storage (Behind-the-Meter Batteries) (EUAMAJAE), Utility-Scale Power Generation Asset Management (EUAEAMAA), Field Services & Repair (Troubleshooting, Corrective Maintenance, Parts Replacement) (EUAMAGAE), Commissioning, Testing & Energization Services (Pre-Commissioning, Grid Code Compliance) (EUAMAFAK)

Keywords

• Battery energy storage
• Renewable energy storage
• Grid services software
• Distributed storage farms
• Energy management platform

Headquarters

HQ city

Chazelles-sur-lyon

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Storage farm installation and operation: Wattmen designs, installs, and operates electricity storage farms for industrial sites, local authorities, and energy transition actors. Revenue generated through project development, installation services, and ongoing operational management of storage assets.
2. Software and piloting services: Proprietary DEMS software platform for real-time monitoring and optimization of storage farms. Ongoing supervision and control services for installed assets.
3. Maintenance services: Continuous monitoring, preventive and corrective maintenance services for storage farms to ensure operational performance and safety.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Wattmen designs, installs, and operates grid-connected battery electricity storage farms for industrial sites, renewable energy developers, local authorities, and landowners. The company delivers end-to-end services spanning needs analysis, engineering, construction, commissioning, certification, real-time piloting via its proprietary DEMS software, and preventive/corrective maintenance. It offers CAPEX asset purchase, as-a-service subscription, and long-term land lease engagement models to address intermittency of renewable energy.

Product overview

Wattmen is an electricity storage farm operator offering integrated solutions from design to maintenance. The portfolio centers on DEMS (Digital Energy Management System), a proprietary software platform for real-time storage farm piloting, combined with three main service lines: storage solutions for electro-intensive industrial sites, partnerships for renewable energy and IPP developers, and land/energy valorization for local authorities. The company handles the complete lifecycle including engineering, installation, operation, and maintenance, positioning itself as a single partner from conception through ongoing maintenance.

Differentiator

Problem solved

Functional benefit

Products and services

• DEMS (Digital Energy Management System) Proprietary software platform developed by Wattmen's teams for real-time piloting and optimization of electricity storage farms, enabling monitoring, control, and performance management of distributed battery storage installations.
• Solutions for Electro-Intensive Industrial Sites Electricity storage farm solutions designed for industrial sites with high electricity consumption, helping reduce energy costs, improve resilience, and meet decarbonation commitments through peak shaving, load curve smoothing, and tariff arbitrage.
• Partnerships for Renewable Energy Developers and IPPs Storage capacity integration services for renewable energy parks enabling production smoothing, market responsiveness, and optimized grid connection for solar and wind developers through multi-revenue stream optimization including arbitrage, curtailment, capacity valorization, and hybrid PPA structuring.
• Land and Energy Valorization for Local Authorities and Landowners Co-development of strategically distributed electricity storage projects for local authorities, either standalone or hybridized with solar PV, requiring no investment from the local authority while generating regular rental income through long-term lease arrangements.
• Storage Farm Design, Installation, and Commissioning End-to-end engineering services covering needs analysis, engineering, construction, commissioning, and certification of electricity storage farms for clients across industrial, renewable, and public sectors.
• Installation Piloting and Supervision Real-time control and monitoring of storage farm operations, including performance tracking, setpoint management, and ongoing operational supervision powered by the DEMS software platform.
• Storage Farm Maintenance Services Continuous monitoring, preventive maintenance, and corrective interventions on electricity storage farms to ensure ongoing performance, safety, and reliability across the asset lifecycle.

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered minor.

• La French TechminorOthersWattmen is recognized as part of the French Tech ecosystem, which supports innovative French technology companies. This affiliation provides visibility and access to the broader French startup and innovation community.
• ADEMEminorOthersADEME (Agence de la transition écologique) provides support and recognition for Wattmen's environmental innovation in energy storage solutions for the energy transition.
• La Plateforme VerteminorStrategic or Co-development PartnerGreen platform partner collaborating on sustainable energy transition initiatives and projects.
• Aura Digital SolaireminorStrategic or Co-development PartnerSolar digital specialist partner potentially collaborating on hybrid solar-storage projects in the Aura region.

Scale indicators4 records

Recent moves14 records

Expansion highlights6 records

Emerging players

• Storengy (Engie subsidiary): Storengy is an Engie subsidiary specialized in gas and underground storage pivoting to battery storage, including French BESS projects. Notable for shared expertise in storage asset management and grid services.

Broad incumbents

• NEOEN: Neoen is a major French independent renewable energy producer with a significant operating battery storage portfolio (e.g., Hornsdale, and French projects). Comparable as a French IPP integrating storage with renewables.
• Engie (Engie Solutions): Engie is a global utility with a major French BESS and distributed energy presence, serving the same industrial, IPP, and municipal customers as Wattmen. Massive balance sheet and incumbent procurement advantage.
• Fluence Energy: Fluence is a global BESS technology and IPP provider, operating utility-scale storage farms with its own Mosaic software platform. It is a much larger, incumbent competitor whose DEMS and project-financing capabilities dwarf Wattmen's offering.
• Tesla Energy: Tesla's energy business develops Megapack utility-scale BESS and the Autobidder optimization platform, competing with Wattmen for multi-MW French storage projects. Far larger scale and software maturity.
• EDF Renewables (EDF ENR): EDF Renewables is France's largest state-owned renewable and storage developer, with active BESS projects that compete directly with Wattmen for industrial PPAs, municipality tenders, and ENR co-location deals.

Direct peers

• GreenYellow: GreenYellow (Casino group) builds behind-the-meter and grid-connected BESS solutions for industrial and retail clients in France and emerging markets. Directly comparable to Wattmen's industrial arbitrage and load-shaving use cases.
• Harmony Energy: Harmony Energy is a developer and operator of grid-scale battery energy storage projects in Europe, including France. It pursues the same IPP/developer model as Wattmen, building and owning storage farms for arbitrage and grid services.
• TagEnergy: TagEnergy is a France-based renewable energy developer and IPP with a significant BESS and battery storage portfolio, including auction wins in France. It directly competes with Wattmen for French utility-scale battery storage deployment and ENR/IPP partnership deals.
• Q Energy (Qair): Q Energy (formerly Qair) is a French-headquartered renewable energy IPP with a growing battery storage arm, working with industrial sites, ENR developers, and local authorities. Highly comparable to Wattmen in customer mix and project structure.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@wattmencreateursdelibertee5967
• LinkedInlinkedin.com/company/wattmen

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Wattmen