What Hellio does

Hellio is a French energy efficiency services company founded in 2008 and headquartered in Clichy, France, operating as a state-accredited CEE (Certificats d'Économies d'Énergie) delegataire. The company provides end-to-end support for energy renovation projects across eight customer segments: individual homeowners, co-ownerships, social housing, agriculture, industry, public sector, tertiary/commercial real estate, transport, and building professionals. Its scope spans technical energy audits, project management, financing coordination (CEE certificates, public subsidies, energy performance contracts), renovation works execution via a network of RGE-certified artisans, and post-project monitoring. The company reports 100,000+ homes renovated, 3,000+ local authority clients, and €87 million in CEE subsidies paid to the tertiary sector since 2020, with FY2024 revenue of €175 million.

Hellio operates a platform-plus-subsidiary architecture. The core Hellio Platform manages CEE dossier processing, financing, and project coordination, supported by wholly-owned subsidiaries: Akéa Énergies (technical engineering, audits, and the proprietary DeltaConso Expert consumption monitoring software), Hellio Ingénierie (engineering services), Hellio Académie (training and certification), and ATFE Ingénierie (engineering). Revenue derives from multiple streams: transaction fees on CEE certificate valorization (Hellio works with 10 major French energy suppliers as a delegated obligor), professional services fees for engineering and works management, and recurring components from DeltaConso software. Pricing is project-dependent, with CEE subsidies covering 17% to 92% of renovation costs depending on eligibility.

Go-to-market combines direct expert-led sales for enterprise and public-sector clients with a multi-channel digital approach for SMB and residential segments, including sector-specific portals (particulier.hellio.com, pro.hellio.com, logementsocial.hellio.com, copropriete.hellio.com). Distribution is amplified by an RGE-certified artisan partner network executing works under Hellio management, creating a B2B2C channel. Hellio holds regulatory credentials including ISO 9001, OPQIBI, Mon Accompagnateur Rénov' approval, and CertifiRénov, and is headquartered in Clichy with a Spain office (Hellio España). It is a privately held SAS with €10 million share capital and no disclosed external ownership or funding rounds.

Name

Hellio

Legal name

HELLIO SOLUTIONS

Website

https://hellio.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

101–250 employees

Short description

Hellio is a French energy efficiency firm founded in 2008, operating as a state-accredited CEE delegataire that delivers end-to-end energy renovation, engineering, financing, and monitoring across residential, commercial, industrial, and public sectors, with FY2024 revenue of €175 million.

Ownership category

akta.pro rank

Product category

Energy Efficiency Services

NAICS

Architectural, Engineering, and Related Services (5413)

akta.pro primary industry

T&D project/program management & owner’s engineering (EPCM/PMC) (EUADAKAF)

Keywords

• Energy efficiency services
• CEE certificate valorization
• Energy renovation works
• Building energy audits
• Energy performance consulting

Headquarters

HQ city

Clichy

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. CEE Certificate Valorization: As a mandated CEE delegataire since 2008, Hellio manages the complete lifecycle of Energy Savings Certificates for energy suppliers. The company identifies energy savings opportunities, builds dossiers, submits to PNCEE (National CEE Authority), and converts certificates to financial value for clients. Revenue derives from the margin between certificate acquisition cost and sale price to obligated energy suppliers. Works with 10 major energy suppliers.
2. Engineering and Technical Services: Akéa Énergies subsidiary provides technical engineering studies, energy audits, compliance consulting for tertiary decree and BACS regulations, and assistance with project management. Revenue from professional service fees.
3. Energy Renovation Works: Coordination and project management of energy renovation works including insulation, heating systems, solar installations, and building renovation. Revenue from works margin and coordination fees, often funded substantially through CEE subsidies.
4. Software and Monitoring Services: DeltaConso Expert software for energy and water consumption monitoring. May include subscription or licensing components for ongoing monitoring and reporting services.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Hellio is a French energy efficiency services company operating as a mandated CEE (Certificats d'Économies d'Énergie / Energy Savings Certificates) délégataire since 2008. It finances and manages energy renovation projects for individuals, businesses, public authorities, and social housing providers by valorizing CEE certificates and combining them with public subsidies. Through its engineering subsidiary Akéa Énergies, it provides technical audits, project management, and compliance consulting (Tertiary decree, BACS). It also installs solar panels, performs carbon footprint assessments, and offers ongoing energy consumption monitoring via its proprietary DeltaConso Expert software.

Product overview

Hellio is an energy efficiency and decarbonization services company operating through a platform-plus-subsidiary model. The core Hellio Platform provides CEE certificate valorization, energy savings simulation, and financing coordination across five solution categories: Financing (CEE, public subsidies, energy performance contracts), Engineering (Akéa Énergies subsidiary handling technical studies, monitoring, and consulting), Energy (solar panels, energy supply), Decarbonation (carbon footprint, carbon credits, electric mobility), and Works (insulation, heating, comprehensive renovation). Key proprietary tools include the DeltaConso Expert consumption monitoring software and the Simulateur Hellio eligibility simulator. The group operates multiple subsidiaries including Akéa Énergies (technical engineering), Hellio Ingénierie, Hellio Académie (training), and ATFE Ingénierie. Services span eight sectors: agriculture, co-owned properties, industry, social housing, individual homeowners, construction professionals, public sector, tertiary/commercial real estate, and transport.

Differentiator

Problem solved

Functional benefit

Brands

• Hellio Ingénierie: Engineering division of Hellio group offering specialized engineering services
• Hellio Académie
• Akéa Énergies
• ATFE Ingénierie

Products and services

• CEE Certificates Management (Certificats d'Économies d'Énergie) End-to-end management of France's Energy Savings Certificate (CEE) mechanism, including identifying eligible projects, building and submitting dossiers to PNCEE (National CEE Authority), and valorizing certificates on behalf of clients. Available to individuals, businesses, public authorities, social housing providers, and energy suppliers.
• Public Subsidies Support (Subventions publiques) Identification and application support for public subsidies for energy efficiency projects, complementing CEE certificate financing. Targets homeowners, businesses, social housing providers, and public authorities.
• Energy Performance Contract (Contrat de Performance Énergétique / CPE) Contractual engagement setting clear energy efficiency targets over a defined period with guaranteed savings outcomes, primarily for industrial and tertiary sector clients (e.g., PSA Stellantis case with 55% targeted gas consumption reduction).
• Solar Panel Installation - Enterprise (Production d'électricité solaire pour les entreprises) Design, installation, and financing of photovoltaic solar installations for commercial and industrial enterprises to reduce grid electricity consumption and enable self-consumption.
• Solar Panel Installation - Residential (Panneaux solaires pour les particuliers) Residential solar panel installation service enabling homeowners to produce their own electricity, reduce bills, and access CEE self-consumption subsidies.
• Energy Supply Optimization (Fourniture d'énergie) Optimization of business energy supply contracts to reduce energy procurement costs and manage consumption.
• Tertiary Decree Compliance Support (Décret Tertiaire) End-to-end compliance support for the French Décret Tertiaire regulation, including energy audits, reduction roadmap, and monitoring toward the mandatory 40% energy consumption reduction by 2030 for buildings over 1,000 m².
• BACS Decree Compliance Support (Décret BACS) Installation of building automation and control systems (GTB) and ongoing performance indicator monitoring to comply with the BACS decree requiring automation of non-residential buildings.
• Global Technical Diagnostic (Diagnostic technique global) Comprehensive technical study package combining all necessary diagnostics to plan energy renovation works tailored to a co-ownership building.
• Technical Engineering Services (Ingénierie technique) Energy studies, technical diagnostics, and works programming services for complex energy efficiency projects across industrial, tertiary, and residential sectors.
• Carbon Footprint Assessment (Bilan Carbone®) Certified greenhouse gas (GES) emissions measurement service using the Bilan Carbone® methodology, supporting decarbonization strategies for industrial and commercial clients.
• Decarbonization Strategies (Stratégies de décarbonation) Strategic consulting to decarbonize industrial sites, combining energy efficiency, renewable energy, and carbon credit approaches to reduce carbon footprint and improve competitiveness.
• Carbon Credit Trading Support (Contribution carbone) Advisory and transaction support service enabling clients to participate in voluntary carbon credit markets as part of their decarbonization strategy.
• Electric Mobility Financing (Mobilité électrique) Financing of corporate vehicle fleet electrification through CEE certificates, including EV charging infrastructure deployment for transport and logistics operators.
• Data Center Energy Optimization Energy consumption optimization service for data center operators, reducing operating costs through energy efficiency measures and CEE-financed upgrades.
• School Building Energy Renovation (Rénovation énergétique de bâtiments scolaires) End-to-end energy renovation service for school buildings in French municipalities, including thermal insulation, heating upgrades, and financing through CEE subsidies and public funding.
• Residential Thermal Insulation (Isolation thermique pour les particuliers) Thermal insulation installation service for residential properties to improve comfort and reduce energy waste, financed through CEE subsidies.
• Social Housing Works Monitoring (Suivi de travaux pour le logement social) Execution of energy renovation works (insulation, metering, heating upgrades) for social housing providers, optimizing energy expenditures through CEE-financed operations.
• District Heating Network Connection (Raccordement à des réseaux de chaleur) Service to connect buildings to district heating networks to utilize waste heat from neighboring industrial or commercial sites, reducing fossil fuel dependence.
• Specific Operations Engineering (Opérations spécifiques) Custom engineering services identifying and valorizing energy savings potential at complex industrial sites, including specialized dossier preparation for non-standard operations.
• Residential Heating System Replacement (Changez le chauffage de votre maison) Heating system replacement service for individual homeowners, including heat pumps and efficient boilers, financed through CEE subsidies to improve comfort and reduce energy bills.
• Co-ownership Global Energy Renovation (Rénovation globale en copropriété) Global energy renovation service for building co-ownerships, achieving up to 50% energy consumption reduction and improving property value.
• Mon Accompagnateur Rénov' Government-approved single-point-of-contact renovation advisory service guiding homeowners through every step of their energy renovation project, from planning to completion.
• Energy Performance Consulting (Conseil en performance énergétique) Specialist consulting service from Akéa Énergies engineers guiding clients through every stage of energy efficiency projects, including strategy, technical choices, and regulatory compliance.
• Akéa Énergies (Engineering subsidiary) Hellio Group's technical engineering subsidiary offering energy studies, BACS and Tertiary decree compliance, diagnostics, energy monitoring, and performance consulting.
• Hellio Ingénierie (Engineering division) Engineering division of the Hellio Group focused on technical engineering services for energy efficiency projects, including Mon Accompagnateur Rénov' delivery.
• Hellio Académie (Training division) Training division of the Hellio Group providing education and professional certification support for energy efficiency practitioners and building professionals.
• ATFE Ingénierie (Engineering subsidiary) Engineering subsidiary of the Hellio Group providing specialized technical assistance for energy efficiency projects.
• DeltaConso Expert (energy and water monitoring software) Proprietary in-house-developed software for monitoring water and energy consumption, enabling tracking and optimization of utility usage across client portfolios.
• Water Consumption Monitoring (Monitorez vos consommations d'eau) Water meter monitoring service using the DeltaConso Expert platform, enabling organizations to track water usage, identify leaks, and reduce water consumption.
• Energy Monitoring Service (Monitoring de l'énergie) Ongoing energy performance monitoring and reporting service delivered by Akéa Énergies, helping clients track energy consumption and verify savings outcomes post-renovation.
• DPE and PPT Compliance for Co-ownership (Obligation des DPE et PPT en copropriété) Service helping building co-ownerships comply with mandatory DPE (Diagnostic de Performance Énergétique) and PPT (Plan Pluriannuel de Travaux) regulatory requirements.
• Social Housing Energy Savings Advisory (Bailleurs sociaux : économisez l'énergie) Advisory service for social housing operators providing regulatory watch, regulatory analysis, and consulting to support energy renovation project decisions.
• Thermal Sieve Exit Assistance (AMO pour les passoires énergétiques) Project management assistance (Assistance à Maîtrise d'Ouvrage) service to help property owners upgrade energy class and exit the 'passoire énergétique' (energy sieve) regulatory category.

Quantifiable outcome

• 100,000+ homes renovated through Hellio-supported projects
• +4 more outcomes

Named customers12 records

Segments9 records

Ideal customer profiles9 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core and major.

• ViessmanncoreTechnology or IntegrationViessmann, a leading European heating and cooling systems manufacturer, appears as a client logo on Hellio's website, indicating active collaboration in heating system projects including heat pumps and boilers eligible for CEE subsidies.
• Bouygues ConstructionmajorStrategic or Co-development PartnerBouygues Construction, a major global construction group, appears as a client logo, indicating collaboration on large-scale building renovation and energy efficiency projects.
• Super UmajorStrategic or Co-development PartnerSuper U, part of the Système U retail group, collaborated with Hellio on photovoltaic installation projects for commercial buildings (Hyper U La Roche-sur-Yon case study demonstrating 500 kWc solar canopy).
• PSA (Stellantis)majorStrategic or Co-development PartnerPSA (now Stellantis), one of Europe's largest automotive manufacturers, works with Hellio since 2015 on heat recovery projects from refrigeration systems, demonstrating energy savings solutions for industrial applications.
• Akéa ÉnergiescoreStrategic or Co-development PartnerAkéa Énergies is a subsidiary of Hellio Group providing specialized engineering services including technical studies, energy audits, project management, and monitoring. Core differentiator for complex energy efficiency projects.
• ANAH (Agence Nationale de l'Habitat)majorChannel Partner/ Reseller/ DistributorANAH, the French National Housing Agency, is an 'éligible' actor in the CEE system that can request CEE certificates directly. Hellio works with ANAH to coordinate funding for housing renovation projects.
• RGE Certified Artisans NetworkcoreChannel Partner/ Reseller/ DistributorNetwork of Reconnue Garante de l'Environnement (RGE) certified artisans who execute renovation works under Hellio project management. Access to pro.hellio.com portal for CEE subsidy processing.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Emerging players

• Deepki: French SaaS provider of ESG and energy performance management for real estate portfolios. Competes directly with Hellio's DeltaConso Expert software in the tertiary and commercial real estate monitoring space, with a software-first go-to-market.
• Voltalis: French energy management specialist offering smart electric heating control and demand-response services for residential and small commercial customers. Adjacent to Hellio's residential energy efficiency and monitoring offerings, with differentiated hardware-led model.

Direct peers

• IZI by EDF: EDF's residential energy renovation platform offering insulation, heating, and solar installations with financing support. Most directly comparable to Hellio's individual homeowner (particulier) segment, with strong brand backing from EDF.

Broad incumbents

• Schneider Electric: Global energy management and automation leader with a significant presence in France across building energy monitoring, BMS, and energy efficiency software. Competes with Hellio's Akéa Énergies and DeltaConso offerings but at vastly larger scale and broader scope.
• Vinci Energies: Vinci Group's energy services division providing infrastructure, building solutions, and energy efficiency services across France and Europe. Comparable to Hellio in industrial energy projects and building retrofits, with deeper EPC capability.
• SPIE: European technical services provider with significant operations in France covering electrical, mechanical, and energy efficiency services for buildings and infrastructure. Competes with Hellio in tertiary building retrofits and BACS/automation deployment.
• ENGIE Solutions: ENGIE's B2B energy services arm in France offering energy efficiency, facility management, and decarbonization services. Overlaps with Hellio in tertiary/commercial building retrofits, energy performance contracts, and works coordination, but operates at much larger scale and across a broader portfolio.
• Bouygues Energies & Services: Energy and digital services arm of Bouygues Group delivering energy infrastructure, building management, and energy efficiency projects. Comparable to Hellio in large-scale renovation programs, with deeper construction integration.
• Dalkia (EDF subsidiary): EDF's energy services subsidiary focused on district heating, energy efficiency, and on-site energy solutions for buildings and industry. Comparable to Hellio in energy performance contracts and industrial heat recovery projects (similar to Stellantis case).

Others

• Bureau Veritas: Global testing, inspection, and certification company that has expanded into energy services including the former Ecofinance CEE business. Related to Hellio through compliance/certification services (e.g., ISO, OPQIBI) and overlap in energy efficiency project assurance.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/Hellio
• Facebookfacebook.com/BonjourHellio
• LinkedInlinkedin.com/company/hellio-solutions

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries4 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 Hellio