Voltalis

What Voltalis does

Voltalis is a Paris-based privately held energy technology company founded in 2006 that operates a proprietary IoT-based demand-side flexibility aggregation platform for electrically heated buildings. The company's core technology consists of connected thermostat modules (Voltalis Connect, Connect 2, Wire, Relay, Meter, DC) that attach to electric radiators, heat pumps, and hot water tanks without rewiring, paired with consumer (MyVoltalis) and professional (MyVoltalis Pro) mobile applications. A central AI-driven platform aggregates signals from 1.5 million+ connected devices across 250,000+ households and 1 million m² of commercial space to modulate heating consumption in real time during grid stress events, earning revenue from grid operators while delivering energy savings of up to 15% for residential and 30% for commercial customers.

Voltalis generates revenue primarily through grid flexibility services sold to electricity transmission operators, most notably RTE (France's grid operator, which has certified Voltalis technology since 2008), supplemented by French Energy Savings Certificate (CEE) subsidies. This revenue model underwrites a freemium go-to-market in which hardware, installation, and the application are provided at zero cost to residential individuals, social housing tenants, and commercial building operators. The company distributes through a direct-to-consumer digital funnel with certified technician installation, enterprise field sales for B2B clients, and institutional partnerships with 400+ local authorities and social housing providers. Distribution is complemented by content marketing, Ecowatt partnership integration, and SEO-driven acquisition.

The company has secured approximately €100M in financing (March 2023) from CIC Private Debt, Edmond de Rothschild Private Equity, and La Banque Postale Asset Management to scale toward 3 million homes and 10 GWc of capacity across Europe within 5–7 years. It is positioned to benefit from the French Thermostat Decree 2023 (N°2023-444), which mandates programmable thermostats in all electrically heated homes by January 2027, and in November 2025 announced a strategic partnership with Univers to expand into commercial building flexibility across Europe and Asia.

Name

Voltalis

Legal name

Voltalis

Website

https://voltalis.com

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

101–250 employees

Short description

Voltalis is a Paris-based energy technology company that aggregates IoT-connected thermostats across electrically heated buildings to provide demand-side flexibility services to grid operators, offering free hardware and installation to 250,000+ households and commercial clients across Europe.

Ownership category

akta.pro rank

Product category

Smart Energy Management

NAICS

Electric Power Transmission, Control, and Distribution (22112), Electric Power Generation (22111)

SIC

Electric Services (4911), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

DER Grid Services & Market Enablement (Ancillary Services, Flexibility) (EUADALAK)

akta.pro secondary industries

V2G Aggregators & Flexibility Service Providers (Market Participation) (EUAFAMAG), Utility & Grid Services Integration for EV Flexibility (DR/DERMS/SCADA Interfaces) (EUAFAMAF)

Keywords

• Smart thermostat solutions
• Demand-side flexibility
• Energy management platform
• Grid flexibility aggregation
• Connected heating devices

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Grid Flexibility Services (Industrial/Professional): Voltalis aggregates the flexibility of connected heating devices and sells it to electricity grid operators (such as RTE in France). During periods of grid stress, Voltalis temporarily reduces consumption from enrolled devices, earning compensation for this demand-response service. This is the primary revenue stream and the mechanism that funds the free consumer offering.
2. Energy Savings for Commercial Buildings: Commercial building owners and operators pay for energy management and savings services. The solution reduces heating costs by up to 30% for businesses while Voltalis retains revenue from grid flexibility valorization. Revenue is shared or reinvested into free deployment.
3. CEE (Certificats d'Économies d'Énergie) Subsidies: Voltalis participates in the French Energy Savings Certificate scheme (Dispositif des Certificats d'Économies d'Énergie), where energy suppliers are obligated to fund energy efficiency measures. Voltalis acts as the implementing party, with costs covered by obligated energy actors.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels9 records

Core offering

Voltalis provides IoT-based smart thermostat hardware modules (Voltalis Connect, Connect 2, Wire, Relay, Meter, DC) that attach to electric heating devices such as radiators, heat pumps, and hot water tanks, paired with the MyVoltalis consumer mobile app and MyVoltalis Pro professional dashboard. A proprietary AI platform aggregates millions of connected devices to deliver real-time demand-side flexibility services to grid operators (notably RTE in France) and energy savings of up to 15% for residential and up to 30% for commercial customers. The complete solution is provided free of charge to end users, funded by grid flexibility revenue, CEE (Certificats d'Économies d'Énergie) subsidies, and energy savings valorization.

Product overview

Voltalis offers a comprehensive smart energy management ecosystem consisting of hardware devices (connected thermostats and modules) and software applications. The core offering includes Voltalis Connect/Connect 2 thermostats, Voltalis Wire/Relay/Meter/DC modules, paired with MyVoltalis and MyVoltalis Pro mobile applications. The solution provides intelligent heating control, real-time consumption monitoring, and demand-side flexibility aggregation services. Residential customers receive the complete solution free of charge, while commercial customers can access flexibility services, centralized heating management, and GTB solutions. The platform uses proprietary algorithms to aggregate millions of electrical devices and optimize consumption in real-time.

Differentiator

Problem solved

Functional benefit

Brands

• MyVoltalis: Mobile application for residential users to monitor and control heating consumption
• MyVoltalis Pro
• Voltalis PRO

Products and services

• Voltalis Connect Connected thermostat device (models VX-CW-T, VX-CW-W) that attaches to electric radiators and heating systems to enable intelligent consumption management, remote control, and demand-side flexibility aggregation.
• Voltalis Connect 2 Next-generation connected thermostat (models C2-CW-T, C2-CP-T) offering improved features for intelligent heating control, energy optimization, and grid flexibility participation.
• Voltalis Wire Control module (VX-SF-H) installed on heating devices to enable intelligent management and modulation capabilities as part of the Voltalis energy management system.
• Voltalis Relay Relay module (VX-SR-H) that controls heating equipment as part of the Voltalis energy management and demand-response system.
• Voltalis Meter Energy metering module (VX-SM-H) that measures and monitors electricity consumption of connected heating devices, feeding data to the Voltalis AI platform.
• Voltalis DC Direct current module (VX-DC-H) for specific heating system integrations and energy management applications, extending the Voltalis product portfolio.
• MyVoltalis Application Mobile application for residential users enabling remote heating control, custom heating schedules, real-time consumption tracking, anomaly detection alerts, and energy savings goal setting.
• MyVoltalis Pro Professional version of the mobile application designed for business users, property managers, and building administrators to centrally manage multiple sites, view aggregated consumption analytics, and program per-room heating.
• Flexibilité (Flexibility Valorization Service) Building flexibility aggregation service that connects commercial building assets to the Voltalis platform and monetizes electrical flexibility through the grid, with compensation for participating buildings.
• Centralized Heating Management (Gestion centralisée du chauffage) Building heating management service providing a dedicated interface for controlling single or multiple buildings, with free deployment funded by flexibility valorization.
• GTB (Building Management System) Reduced-investment Building Management System (GTB) leveraging electrical demand flexibility, allowing equipment control through a simple ergonomic interface for commercial buildings.
• Voltalis Connected Thermostat Solution Complete smart energy management solution comprising connected thermostat hardware, the MyVoltalis mobile app, and intelligent consumption modulation service, offered free to residential users and enabling up to 15% energy savings and 70% CO2 emission reduction.

Quantifiable outcome

• Up to 15% energy savings for residential customers
• +10 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered core and minor.

• UniverscoreStrategic or Co-development Partner · 18 November 2025Strategic global partnership announced November 18, 2025 between Voltalis (Europe's leader in demand-side flexibility aggregation) and Univers (global AI and IoT platform leader) to deliver smart energy flexibility solutions for commercial buildings across Europe and Asia. The combined solution connects and manages diverse building systems including HVAC, EV chargers, battery storage, and distributed generation. Targets: 10 initial commercial clients in France and the UK, scaling to 1,000 buildings representing ~200MW peak load. Expected outcomes: 10-15% energy cost savings and up to 50% reduction in payback periods. Initial sites expected to avoid several hundred tons of CO2 emissions annually.
• RTE (Réseau de Transport d'Électricité)coreStrategic or Co-development PartnerLong-standing partnership with RTE, France's electricity transmission system operator. Voltalis' technology was certified by RTE in 2008, and the company participates in France's Ecowatt program — RTE's 'electricity weather' alert system — as an official Ecowatt partner. Voltalis aggregates demand-side flexibility and provides grid balancing services to RTE during periods of supply-demand tension.
• Ademe (Agence de l'Environnement et de la Maitrise de l'Énergie)minorOthersAdeme data is cited as the source for the 15% energy savings claim. Voltalis references Ademe's research to substantiate energy savings claims in marketing materials.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Energy Pool: France-based demand-response aggregator that pools industrial and commercial flexibility for TSOs/DSOs and supplies grid balancing services, directly competing with Voltalis on flexibility aggregation in the same French and European markets.
• Flexcity (by REstore): European flexibility aggregator commercializing aggregated DR and DER capacity to grid operators and utilities, overlapping with Voltalis on B2B flexibility valorization and grid services in France and across Europe.
• Netatmo (Legrand): Consumer smart-thermostat vendor (acquired by Legrand) selling connected heating controls to European households; competes with Voltalis Connect on the residential side but lacks an integrated grid-flexibility aggregation model.

Broad incumbents

• Kiwi Power (Engie): Demand-response aggregator owned by Engie operating across the UK and Europe; offers similar industrial and commercial flexibility services to grid operators and is part of a much larger utility parent's portfolio.
• Schneider Electric EcoStruxure: Global building-automation and energy-management incumbent with smart thermostats, building management systems, and DER integration — overlapping with Voltalis Pro's centralized heating management and GTB offerings for commercial buildings.
• Octopus Energy: UK and European energy retailer with smart-tariff demand response, smart heating products, and Kraken flexibility platform; competes with Voltalis in UK residential and commercial flexibility aggregation.
• AutoGrid (Siemens): Distributed-energy resource management platform acquired by Siemens that aggregates behind-the-meter assets for grid services, comparable in function to Voltalis' AI/IoT aggregation layer but operating at scale via Siemens' global footprint.
• EDF (Flexergy / aggregation activities): French incumbent utility with its own flexibility aggregation and demand-response activities, both a key customer-side counterpart and a potential competitor as it builds out DER aggregation capabilities in France and the UK.

Emerging players

• Tibber: Digital energy retailer active across Europe offering smart-home energy management, dynamic tariffs, and EV charging integration; overlaps with Voltalis on energy savings, demand shifting, and consumer IoT energy engagement.

Regional players

• Lightsource Labs (Lightsource bp): European solar developer increasingly bundling flexibility and storage offerings to commercial customers; adjacent to Voltalis as a participant in flexibility markets and DER aggregation across Europe.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/voltalis

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors3 records

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 Voltalis